Liver Support Formula Ingredients & Drug Interactions
by SuperSmart
What is this page for?
First and foremost: checking Liver Support Formula against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Liver Support Formula is a dietary supplement by SuperSmart with 10 active ingredients. Its ingredients are commonly taken for acetaminophen (tylenol) overdose support, liver health, urinary tract acidification.Based on those ingredients, 1,571 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Ginkgo biloba Extract, Milk Thistle extract, Artichoke Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Liver Support Formula by SuperSmart
Ask about any prescription or over-the-counter medication and we check it for interactions with Liver Support Formula by SuperSmart — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Liver Support Formula by SuperSmart
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
Liver Support Formula contains 10 active ingredients chosen to support liver function and detoxification. L-methionine and L-citrulline are amino acids that play roles in liver metabolism and circulation.
Milk thistle extract is a traditional liver herb containing silymarin. Glutathione (reduced form) is an antioxidant your liver produces naturally.
Ginkgo biloba extract supports blood flow and circulation. Picrorhiza kurroa and artichoke extracts are traditional botanicals used to support liver and digestive health.
You'll also find chlorella (a microalgae) and selenium with its form L-selenomethionine, both supporting detoxification and antioxidant function. Sodium R-lipoate is a form of alpha-lipoic acid.
Two inactive ingredients—acacia gum and white rice flour—are listed as well.
Does it work?
Not established
The evidence for liver support varies by ingredient. Milk thistle shows possibly effective evidence for diabetes management.
Ginkgo biloba has possibly effective ratings for hearing loss, stroke, dementia, anxiety, premenstrual syndrome, and schizophrenia. Artichoke extract is possibly effective for high cholesterol and indigestion.
L-citrulline is possibly effective for athletic performance. Chlorella appears possibly effective for pregnancy-related iron deficiency.
For most other uses in this formula—including general liver support and detoxification—the evidence we hold is insufficient to establish effectiveness. Many ingredients lack robust human trials for their traditional liver-support claims.
How safe is it?
Well-documented data
Most individual ingredients are generally well tolerated when used short-term. However, some cautions apply: L-methionine at high doses may raise a compound called homocysteine, which relates to heart health; L-citrulline may cause heartburn or stomach discomfort in some people; chlorella can cause digestive upset (especially in the first two weeks) and rare allergic reactions including anaphylaxis; milk thistle may cause mild digestive symptoms; and ginkgo carries a risk of increased bleeding, especially if you have bleeding disorders or take blood thinners.
Sodium R-lipoate is essentially salt, and excess sodium is linked to high blood pressure and kidney strain. Long-term safety of several ingredients has not been fully studied.
Meds to double-check
Major interaction found
Before taking this product, double-check these medication types with your pharmacist: blood thinners like warfarin (ginkgo, chlorella, and milk thistle all affect clotting); talinolol and other beta-blockers (ginkgo raises levels); blood pressure medicines (L-citrulline and artichoke may add to their effect); diabetes drugs (milk thistle, picrorhiza, and artichoke may lower blood sugar further); lithium (sodium R-lipoate affects lithium levels); antivirals like sofosbuvir and ledipasvir (milk thistle interferes); and psychiatric or cholesterol drugs (ginkgo may reduce their effectiveness). Photosensitizing drugs (medicines that increase sun sensitivity) may have additive effects with chlorella.
The bottom line
Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Major medication interactions have been identified, and safety information is well characterized.
This formula combines traditional liver-support herbs with amino acids and antioxidants. It's worth considering if you want a broad liver-support supplement, but it's not appropriate for everyone.
If you take blood thinners, diabetes drugs, blood pressure medications, lithium, or any psychiatric or antiviral drugs, check your exact medications with the tool on this page first—several ingredients interact with these. Talk to your pharmacist or doctor before starting, especially if you have bleeding disorders, liver disease, or are pregnant or breastfeeding.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 9 of 10 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 25, 2025.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Liver Support Formula, straight from the product label.
| Brand | SuperSmart |
|---|---|
| Barcode (UPC) | 5453003825517 |
| Net contents | 90 Vegetarian Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Jun 25, 2025 |
| DSLD ID | 332391 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other |
| Intended target group(s) | Adult (18 - 50 Years) |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Liver Support Formula by SuperSmart, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Methionine | 75 mg | -- |
| L-Citrulline | 100 mg | -- |
| Selenium | 80 mcg | 145% |
| L-Selenomethionine | 200 mcg | -- |
| Chlorella | 100 mg | -- |
| Milk Thistle extract | 100 mg | -- |
| Glutathione, Reduced | 35 mg | -- |
| Ginkgo biloba Extract | 150 mg | -- |
| Sodium R-Lipoate | 100 mg | -- |
| Picrorhiza kurroa Extract | 200 mg | -- |
| Artichoke Extract | 100 mg | -- |
Other ingredients: Acacia Gum, White Rice Flour
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Directions: Adults. Take 3 capsules per day during meals.
Precautions
Precautions: Do not exceed the recommended daily dose. This product is a nutritional supplement and should not be used to replace a varied, balanced diet or healthy lifestyle.
Keep out of young children's reach.
As with all nutritional supplements, consult a health professional before taking if you are pregnant, breastfeeding or suffer from a health problem.
Storage
Store away from light, heat and humidity.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Liver Support Formula by SuperSmart label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Liver Support Formula by SuperSmart
These are the 10 active ingredients this product is made of. Select any to open its full monograph.
Serving size3 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
L-Methionine
No knowninteractions
Methionine is an essential amino acid that your body needs for protein building and many basic chemical reactions. Most people get enough from a norma...
L-Methionine monograph & interactionsL-Citrulline
Interacts with178 drugs
L-citrulline is an amino acid that the body turns into L-arginine to help make nitric oxide, which relaxes blood vessels and may improve blood flow. I...
L-Citrulline monograph & interactionsSelenium
Interacts with321 drugs
Selenium is an essential trace mineral your body needs in small amounts for thyroid function, antioxidant defense, and immune health. Most people who...
Selenium monograph & interactions- › L-Selenomethionine
Chlorella
Interacts with337 drugs
Chlorella is a nutrient-rich freshwater green algae taken as a supplement for general wellness, immune support, and 'detox.' Some small studies sugges...
Chlorella monograph & interactionsMilk Thistle extract
Interacts with954 drugs
Milk thistle is a popular herbal supplement most often used for liver health, and its main active component is a group of compounds called silymarin....
Milk Thistle extract monograph & interactionsGlutathione, Reduced
No knowninteractions
Glutathione is a powerful antioxidant your body makes naturally, and many people take it as a supplement hoping for skin, detox, or anti-aging benefit...
Glutathione, Reduced monograph & interactionsGinkgo biloba Extract
Interacts with1,266 drugs
Ginkgo is one of the world's most popular herbal supplements, mostly taken to support memory and circulation. The evidence for these uses is mixed and...
Ginkgo biloba Extract monograph & interactionsSodium R-Lipoate
Interacts with205 drugs
Sodium is an essential mineral and electrolyte your body needs to balance fluids, support nerves, and help muscles work. Most people in modern diets g...
Sodium R-Lipoate monograph & interactionsPicrorhiza kurroa Extract
Interacts with207 drugs
Picrorhiza (Picrorhiza kurroa) is a bitter Himalayan herb used in Ayurvedic medicine, mainly for liver and digestive complaints. Early lab and small h...
Picrorhiza kurroa Extract monograph & interactionsArtichoke Extract
Interacts with363 drugs
Artichoke leaf extract is a generally well-tolerated supplement that may have a mild cholesterol-lowering effect and is often used for indigestion, th...
Artichoke Extract monograph & interactionsOther (inactive) ingredients: Acacia Gum, White Rice Flour. These complete the product’s ingredient list but are not active constituents.
Liver Support Formula by SuperSmart Drug Interactions
HelloPharmacist Interaction Report
Liver Support Formula by SuperSmart interacts with a number of medications, with the most serious concern involving ginkgo biloba extract and talinolol (a beta-blocker), which can significantly raise talinolol blood levels.
Read the full breakdown — every affected drug type, severity by severity
Several ingredients affect blood thinners. Ginkgo and chlorella both interact with warfarin—ginkgo may increase bleeding risk by affecting how blood clots, while chlorella contains vitamin K which can reduce warfarin's effectiveness.
Milk thistle also theoretically increases warfarin effects. If you take warfarin, you'll need to discuss this product with your pharmacist or doctor before starting.
Multiple ingredients may lower blood pressure or blood sugar. L-citrulline, artichoke extract, and antihypertensive or antidiabetes drugs together could cause excessively low blood pressure (hypotension) or low blood sugar (hypoglycemia).
Milk thistle and picrorhiza both lower blood sugar, and milk thistle can also slow the clearance of certain medications processed by your liver—including some antivirals and pain relievers. Ginkgo may reduce the effectiveness of some cholesterol and psychiatric drugs.
Sodium R-lipoate (technically an inorganic salt) affects how lithium and other sodium-dependent medications work in your body.
Chlorella may increase photosensitivity (sun sensitivity) if you're on photosensitizing drugs. We could not check L-selenomethionine—data for that ingredient is not on file.
Altogether, these interactions span 1,541 individual medications. Use the interaction checker on this page with your exact medications before taking this product.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Liver Support Formula?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Liver Support Formula interact with 1,571 drugs. Click any drug to see the details.
8 of the 10 ingredients in Liver Support Formula interact with drugs. Each result below shows which ingredient is responsible. Ginkgo biloba Extract Milk Thistle extract Artichoke Extract Chlorella Selenium Picrorhiza kurroa Extract Sodium R-Lipoate L-Citrulline
Acetaminophen, Chlorpheniramine, DextromethorphanCoricidin II Extra Strength Cold and Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Seizure Threshold Lowering Drugs +1 Moderate
Interaction Summary
Theoretically, ginkgo might decrease levels of drugs metabolized by CYP3A4.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionMilk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan interactionAcetaminophen, Chlorpheniramine, Dextromethorphan HydrobromideCoricidin HBP Maximum Strength Flu
How Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionGinkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Dextromethorphan Hydrobromide interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PhenylpropanolamineMulti Symptom Cold Relief
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
ChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionGinkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionMilk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Dextromethorphan, PseudoephedrineChildren's Tylenol Cold Plus Cough, Tylenol Cold Ex Strength
How Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, ginkgo might decrease levels of drugs metabolized by CYP3A4.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionMilk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, SalicylamideRhinogesic GG
How Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionMilk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Guaifenesin, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylephrineAlka-Seltzer PLUS, Histex SR, Protid
How Acetaminophen, Chlorpheniramine, Phenylephrine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
ChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Phenylephrine interactionMilk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Phenylephrine interactionGinkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Phenylephrine interactionAcetaminophen, Chlorpheniramine, Phenylephrine, SalicylamideRhinogesic, Rhinogesic JR
How Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionMilk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Phenylephrine, Salicylamide interactionAcetaminophen, Chlorpheniramine, PhenylpropanolamineAlumadrine, Conex, Sinadrin Max Strength, Sinulin
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionMilk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Phenylpropanolamine interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, OpiumHista-Derfule
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
ChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionMilk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionGinkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Opium interactionAcetaminophen, Chlorpheniramine, Phenylpropanolamine, PhenyltoloxamineNorel Plus
How Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionMilk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Phenylpropanolamine, Phenyltoloxamine interactionAcetaminophen, Chlorpheniramine, PseudoephedrineAlka-Seltzer PLUS Liquid Gels, Children's Tylenol Cold, Codimal, Comtrex, Extra Strength Tylenol Allergy Sinus, Lorsin +3 more
How Acetaminophen, Chlorpheniramine, Pseudoephedrine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionGinkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates +1 Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Chlorpheniramine, Pseudoephedrine interactionAcetaminophen, ChlorzoxazoneAcetazone Forte, Extra Strength Tylenol Aches & Strains, Parafon Forte
How Acetaminophen, Chlorzoxazone interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Chlorzoxazone interactionGinkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorzoxazone interactionAcetaminophen, Chlorzoxazone, CodeineAcetazone Forte C8, Parafon Forte C8
How Acetaminophen, Chlorzoxazone, Codeine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Chlorzoxazone, Codeine interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Chlorzoxazone, Codeine interactionAcetaminophen, CodeineTylenol No.3, Tylenol w/ Codeine
How Acetaminophen, Codeine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Codeine interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Codeine interactionAcetaminophen, Codeine, DoxylamineMersyndol
How Acetaminophen, Codeine, Doxylamine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Codeine, Doxylamine interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Codeine, Doxylamine interactionAcetaminophen, Codeine, MethocarbamolAcetaminophen, Codeine, Methocarbamol, Robaxacet 8
How Acetaminophen, Codeine, Methocarbamol interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Codeine, Methocarbamol interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Codeine, Methocarbamol interactionAcetaminophen, Dexbrompheniramine, PseudoephedrineSinadrin Plus
How Acetaminophen, Dexbrompheniramine, Pseudoephedrine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Dexbrompheniramine, Pseudoephedrine interactionAcetaminophen, DextromethorphanTylenol Cough Ex Strength
How Acetaminophen, Dextromethorphan interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Dextromethorphan interactionGinkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dextromethorphan interactionAcetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +1 Moderate
Interaction Summary
Theoretically, ginkgo might decrease levels of drugs metabolized by CYP3A4.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionMilk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionGinkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might decrease levels of drugs metabolized by CYP3A4.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionMilk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionGinkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionMilk Thistle ExtractGlucuronidated Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interactionAcetaminophen, Dextromethorphan, PseudoephedrineAlka-Seltzer PLUS Flu Liquid Gels, Non Aspirin Cold Caps, Tylenol Cold, Tylenol Flu Daytime Ex Strength, Tylenol Flu Ex Strength
How Acetaminophen, Dextromethorphan, Pseudoephedrine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Glucuronidated Drugs Moderate
Interaction Summary
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
Read the full Milk Thistle Extract + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionGinkgo Biloba ExtractCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might decrease levels of drugs metabolized by CYP3A4.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, Dichloralantipyrine, IsomethepteneAmidrine, Midchlor, Migquin, Migratine
How Acetaminophen, Dichloralantipyrine, Isometheptene interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dichloralantipyrine, Isometheptene interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Dichloralantipyrine, Isometheptene interactionAcetaminophen, Dichloralphenazone, IsomethepteneMidrin
How Acetaminophen, Dichloralphenazone, Isometheptene interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Dichloralphenazone, Isometheptene interactionGinkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dichloralphenazone, Isometheptene interactionAcetaminophen, Dichlorophenazone, IsometheptaneIsocom
How Acetaminophen, Dichlorophenazone, Isometheptane interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Dichlorophenazone, Isometheptane interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Dichlorophenazone, Isometheptane interactionAcetaminophen, DiphenhydramineTylenol PM, Tylenol PM Ex Strength
How Acetaminophen, Diphenhydramine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
Milk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Diphenhydramine interactionGinkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Diphenhydramine interactionChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Diphenhydramine interactionAcetaminophen, Diphenhydramine, PseudoephedrineChildren's Tylenol Allergy, Cold Control, Contac Night Allergy Relief
How Acetaminophen, Diphenhydramine, Pseudoephedrine interacts with Liver Support Formula — through 3 ingredients. Tap an ingredient for the detail:
ChlorellaPhotosensitizing Drugs Moderate
Interaction Summary
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Read the full Chlorella + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionGinkgo Biloba ExtractSeizure Threshold Lowering Drugs, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Read the full Ginkgo Biloba Extract + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Diphenhydramine, Pseudoephedrine interactionAcetaminophen, Doxylamine, PseudoephedrineEx Strength Tylenol Sinus Nighttime
How Acetaminophen, Doxylamine, Pseudoephedrine interacts with Liver Support Formula — through 2 ingredients. Tap an ingredient for the detail:
Ginkgo Biloba ExtractCytochrome P450 1a2 (cyp1a2) Substrates, Seizure Threshold Lowering Drugs Moderate
Interaction Summary
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Read the full Ginkgo Biloba Extract + Acetaminophen, Doxylamine, Pseudoephedrine interactionMilk Thistle ExtractGlucuronidated Drugs Moderate
Interaction Summary
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Read the full Milk Thistle Extract + Acetaminophen, Doxylamine, Pseudoephedrine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Liver Support Formula with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Ginkgo biloba Extract
Talinolol
Taking ginkgo with talinolol seems to increase blood levels of talinolol.
There is some evidence that using ginkgo leaf extract 120 mg orally three times daily for 14 days can increase levels of talinolol by 36% in healthy male individuals. However, single doses of ginkgo do not seem to affect talinolol pharmacokinetics.
Alprazolam (Xanax)
Theoretically, ginkgo might decrease the levels and clinical effects of alprazolam.
In clinical research, ginkgo extract (Ginkgold) 120 mg twice daily seems to decrease alprazolam levels by about 17%. However, ginkgo does not appear to decrease the elimination half-life of alprazolam. This suggests that ginkgo is more likely to decrease absorption of alprazolam rather than induce hepatic metabolism of alprazolam.
Anticoagulant/Antiplatelet Drugs
Ginkgo has been shown to increase the risk of bleeding in some people when taken with warfarin. Theoretically, ginkgo might increase the risk of bleeding if used with other anticoagulant or antiplatelet drugs.
Several pharmacodynamic studies suggest that ginkgo inhibits platelet aggregation. It is thought that the ginkgo constituent, ginkgolide B, displaces platelet-activating factor (PAF) from its binding sites, decreasing blood coagulation. Several case reports have documented serious bleeding events in patients taking ginkgo. However, population and clinical studies have produced mixed results. Some evidence shows that short-term use of ginkgo leaf does not significantly reduce platelet aggregation and blood clotting. A study in healthy males who took a specific ginkgo leaf extract (EGb 761) 160 mg twice daily for 7 days found no change in prothrombin time. An analysis of a large medical record database suggests that ginkgo increases the risk of a bleeding adverse event by 38% when taken concurrently with warfarin. It has been suggested that ginkgo has to be taken for at least 2-3 weeks to have a significant effect on platelet aggregation. However, a meta-analysis of 18 studies using standardized ginkgo extracts, 80-480 mg daily for up to 32 weeks, did not find a significant effect on platelet aggregation, fibrinogen concentration, or PT/aPTT. In addition, a single dose of ginkgo plus clopidogrel or ticlopidine does not seem to significantly increase bleeding time or platelet aggregation. Also, taking ginkgo leaf extract daily for 8 days in conjunction with rivaroxaban does not affect anti-factor Xa activity; however, this study did not evaluate bleeding time.
Anticonvulsants
Theoretically, ginkgo might reduce the effectiveness of anticonvulsants.
Ginkgo seeds contain ginkgotoxin. Large amounts of ginkgotoxin can cause neurotoxicity and seizure. Ginkgotoxin is present in much larger amounts in ginkgo seeds than leaves. Ginkgo leaf extract contains trace amounts of ginkgotoxin. The amount of ginkgotoxin in ginkgo leaf and leaf extract seems unlikely to cause toxicity. However, there are anecdotal reports of seizure occurring after use of ginkgo leaf both in patients without a history of seizure disorder and in those with previously well-controlled epilepsy.
Antidiabetes Drugs
Theoretically, taking ginkgo with antidiabetes drugs might alter the response to antidiabetes drugs.
Ginkgo leaf extract seems to alter insulin secretion and metabolism, and might affect blood glucose levels in people with type 2 diabetes. The effect of ginkgo seems to differ depending on the insulin and treatment status of the patient. In diet-controlled diabetes patients with hyperinsulinemia, taking ginkgo does not seem to significantly affect insulin or blood glucose levels. In patients with hyperinsulinemia who are treated with oral hypoglycemic agents, taking ginkgo seems to decrease insulin levels and increase blood glucose following an oral glucose tolerance test. Researchers speculate that this could be due to ginkgo-enhanced hepatic metabolism of insulin. In patients with pancreatic exhaustion, taking ginkgo seems to stimulate pancreatic beta-cells, resulting in increased insulin and C-peptide levels, but with no significant change in blood glucose levels in response to an oral glucose tolerance test.
Atorvastatin (Lipitor)
Theoretically, ginkgo might decrease the levels and clinical effects of atorvastatin.
In humans, intake of ginkgo extract appears to increase atorvastatin clearance, reducing the area under the curve of atorvastatin by 10% to 14% and the maximum concentration by 29%. However, this interaction does not appear to affect cholesterol synthesis and absorption. Further, a model in rats with hyperlipidemia suggests that administering ginkgo extract does not impact blood levels of atorvastatin and leads to lower total cholesterol, low-density lipoprotein cholesterol, and triglycerides when compared with rats given atorvastatin alone.
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, ginkgo might increase levels of drugs metabolized by CYP1A2.
Laboratory research suggests that ginkgo leaf extract can mildly inhibit CYP1A2 enzymes. However, clinical research suggests ginkgo might not affect CYP1A2. Until more is known, use ginkgo cautiously in patients taking drugs metabolized by these enzymes.
Cytochrome P450 2C19 (Cyp2C19) Substrates
Theoretically, ginkgo might decrease levels of drugs metabolized by CYP2C19.
Some clinical research shows that a specific ginkgo leaf extract (Remembrance, Herbs Product LTD) 140 mg twice daily can induce CYP2C19 enzymes and potentially decrease levels of drugs metabolized by these enzymes. However, other clinical research shows that taking ginkgo 120 mg twice daily for 12 days has no effect on levels of drugs metabolized by CYP2C19.
Cytochrome P450 2C9 (Cyp2C9) Substrates
Theoretically, ginkgo might increase levels of drugs metabolized by CYP2C9.
In vitro, a specific standardized extract of ginkgo leaf (EGb 761) inhibits CYP2C9 activity . The terpenoid (ginkgolides) and flavonoid (quercetin, kaempferol, etc.) constituents seem to be responsible for this effect. Most ginkgo extracts contain some amount of these constituents. Therefore, other ginkgo leaf extracts might also inhibit the CYP2C9 enzyme. However, clinical research suggests that ginkgo might not have a significant effect on CYP2C9 in humans. Ginkgo does not seem to significantly affect the pharmacokinetics of CYP2C9 substrates diclofenac or tolbutamide.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, ginkgo might decrease levels of drugs metabolized by CYP3A4.
There is conflicting evidence about whether ginkgo induces or inhibits CYP3A4. Ginkgo does not appear to affect hepatic CYP3A4. However, it is not known if ginkgo affects intestinal CYP3A4. Preliminary clinical research suggests that taking ginkgo does not significantly affect levels of donepezil, lopinavir, or ritonavir, which are all CYP3A4 substrates. Other clinical research also suggests ginkgo does not significantly affect CYP3A4 activity. However, there are two case reports of decreased efavirenz concentrations and increased viral load in patients taking ginkgo. It is suspected that terpenoids from the ginkgo extract reduced drug levels by inducing cytochrome P450 3A4 (CYP3A4).
Efavirenz (Sustiva)
Theoretically, ginkgo might decrease the levels and clinical effects of efavirenz.
There are two case reports of decreased efavirenz concentrations and increased viral load in patients taking ginkgo. In one case, an HIV-positive male experienced over a 50% decrease in efavirenz levels over the course of 14 months while taking ginkgo extract. HIV-1 RNA copies also increased substantially, from less than 50 to more than 1500. It is suspected that terpenoids from the ginkgo extract reduced drug levels by inducing cytochrome P450 3A4 (CYP3A4). In another case report, a patient stable on antiviral therapy including efavirenz for 10 years, had an increase in viral load from <50 copies/mL to 1350 copies/mL after 2 months of taking a combination of supplements including ginkgo. After stopping ginkgo, the viral load was again controlled with the same antiviral therapy regimen.
Ibuprofen (Advil, Others)
Theoretically, ginkgo might increase the risk of bleeding when used with ibuprofen.
Ginkgo might have antiplatelet effects and has been associated with several case reports of spontaneous bleeding. In one case, a 71-year-old male had taken a specific ginkgo extract (Gingium, Biocur) 40 mg twice daily for 2.5 years. About 4 weeks after starting ibuprofen 600 mg daily he experienced a fatal intracerebral hemorrhage. However, the antiplatelet effects of ginkgo have been questioned. A meta-analysis and other studies have not found a significant antiplatelet effect with standardized ginkgo extracts, 80 mg to 480 mg taken daily for up to 32 weeks.
P-Glycoprotein Substrates
Theoretically, taking ginkgo with P-glycoprotein substrates might increase the levels and adverse effects of these substrates.
A small clinical study in healthy volunteers shows that using ginkgo leaf extract 120 mg orally three times daily for 14 days can increase levels of the P-glycoprotein substrate, talinolol, by 36% in healthy male individuals. However, single doses of ginkgo do not have the same effect.
Risperidone (Risperdal)
Theoretically, taking ginkgo with risperidone might increase the levels and adverse effects of risperidone.
A single case of priapism has been reported for a 26-year-old male with schizophrenia who used risperidone 3 mg daily along with ginkgo extract 160 mg daily. Risperidone is metabolized by cytochrome P450 (CYP) 2D6 and CYP3A4. CYP3A4 activity might be affected by ginkgo. Theoretically, ginkgo may inhibit the metabolism of risperidone and increase the risk of adverse effects.
Rosiglitazone (Avandia)
Theoretically, ginkgo might decrease the levels and clinical effects of rosiglitazone.
Animal research shows that ginkgo leaf extract orally 100 or 200 mg/kg daily for 10 days alters the pharmacodynamics of rosiglitazone in a dose-dependent manner. The 100 mg/kg and 200 mg/kg doses reduce the area under the concentration time curve (AUC) of rosiglitazone by 39% and 52%, respectively, and the half-life by 28% and 39%, respectively. It is hypothesized that these changes may be due to induction of cytochrome P450 2C8 by ginkgo.
Seizure Threshold Lowering Drugs
Theoretically, taking ginkgo with drugs that lower the seizure threshold might increase the risk for convulsions.
Ginkgo seeds contain ginkgotoxin. Large amounts of ginkgotoxin can cause neurotoxicity and seizure. Ginkgotoxin is present in much larger amounts in ginkgo seeds than leaves. Ginkgo leaf extract contains trace amounts of ginkgotoxin. The amount of ginkgotoxin in ginkgo leaf and leaf extract seems unlikely to cause toxicity. However, there are anecdotal reports of seizure occurring after use of ginkgo leaf both in patients without a history of seizure disorder and in those with previously well-controlled epilepsy.
Simvastatin (Zocor)
Theoretically, ginkgo might decrease the levels and clinical effects of simvastatin.
Clinical research shows that taking ginkgo extract can reduce the area under the curve and maximum concentration of simvastatin by 32% to 39%. However, ginkgo extract does not seem to affect the cholesterol-lowering ability of simvastatin.
Sofosbuvir (Sovaldi)
Theoretically, ginkgo might increase the levels and clinical effects of sofosbuvir.
Animal research in rats shows that giving a ginkgo extract 25 mg/kg orally daily for 14 days increases the area under the concentration time curve (AUC) after a single sofosbuvir dose of 40 mg/kg by 11%, increases the half-life by 60%, and increases the plasma concentration at 4 hours by 38%. This interaction appears to be related to the inhibition of intestinal P-glycoprotein by ginkgo.
Tacrolimus (Prograf)
Theoretically, ginkgo might increase the blood levels of tacrolimus.
In vitro evidence suggests that certain biflavonoids in ginkgo leaves (i.e. amentoflavone, ginkgetin, bilobetin) may inhibit the metabolism of tacrolimus by up to 50%. This interaction appears to be time-dependent and due to inhibition of cytochrome P450 (CYP) 3A4 by these bioflavonoids. In rats given tacrolimus 1 mg/kg orally, amentoflavone was shown to increase the area under the concentration time curve (AUC) of tacrolimus by 3.8-fold.
Trazodone (Desyrel)
Theoretically, ginkgo might increase the levels and clinical effects of trazodone.
In a case report, an Alzheimer patient taking trazodone 20 mg twice daily and ginkgo leaf extract 80 mg twice daily for four doses became comatose. The coma was reversed by administration of flumazenil (Romazicon). Coma might have been induced by excessive GABA-ergic activity. Ginkgo flavonoids are thought to have GABA-ergic activity and act directly on benzodiazepine receptors. Ginkgo might also increase metabolism of trazodone to active GABA-ergic metabolites, possibly by inducing cytochrome P450 3A4 (CYP3A4) metabolism.
Warfarin (Coumadin)
Ginkgo has been shown to increase the risk of bleeding in some people when taken with warfarin.
Several pharmacodynamic studies suggest that ginkgo inhibits platelet aggregation. It is thought that the ginkgo constituent, ginkgolide B, displaces platelet-activating factor (PAF) from its binding sites, decreasing blood coagulation. Several case reports have documented serious bleeding events in patients taking ginkgo. Information from a medical database suggests that when taken concurrently with warfarin, ginkgo increases the risk of a bleeding adverse event by 38%. There is also some evidence that ginkgo leaf extract can inhibit cytochrome P450 2C9, an enzyme that metabolizes warfarin. This could result in increased warfarin levels. However, population and clinical research has produced mixed results. Clinical research in healthy people suggests that ginkgo has no effect on INR, or the pharmacokinetics or pharmacodynamics of warfarin. A meta-analysis of 18 studies using standardized ginkgo extracts, 80 mg to 480 mg daily for up to 32 weeks, did not find a significant effect on platelet aggregation, fibrinogen concentration, or PT/aPTT. There is also some preliminary clinical research that suggests ginkgo might not significantly increase the effects of warfarin in patients that have a stable INR.
Nifedipine (Procardia)
Theoretically, taking ginkgo with oral, but not intravenous, nifedipine might increase levels and adverse effects of nifedipine.
Animal research and some clinical evidence suggests that taking ginkgo leaf extract orally in combination with oral nifedipine might increase nifedipine levels and cause increased side effects, such as headaches, dizziness, and hot flushes. However, taking ginkgo orally does not seem to affect the pharmacokinetics of intravenous nifedipine.
Omeprazole (Prilosec)
Theoretically, taking ginkgo with omeprazole might decrease the levels and clinical effects of omeprazole.
Clinical research shows that a specific ginkgo leaf extract (Remembrance, Herbs Product LTD) 140 mg twice daily can induce cytochrome P450 (CYP) 2C19 enzymes and decrease levels of omeprazole by about 27% to 42%.
Milk Thistle extract
Antidiabetes Drugs
Taking milk thistle with antidiabetes drugs may increase the risk of hypoglycemia.
Clinical research shows that milk thistle extract, alone or along with tree turmeric extract, can lower blood glucose levels and glycated hemoglobin (HbA1c) in patients with type 2 diabetes, including those already taking antidiabetes drugs. Additionally, animal research shows that milk thistle extract increases the metformin maximum plasma concentration and area under the curve and decreases the renal clearance of metformin, due to inhibition of the multi-drug and toxin extrusion protein 1 (MATE1) renal tubular transport protein.
Cytochrome P450 2B6 (Cyp2B6) Substrates
Theoretically, milk thistle might inhibit CYP2B6.
An in vitro study shows that silybin, a constituent of milk thistle, binds to and noncompetitively inhibits CYP2B6. Additionally, silybin might downregulate the expression of CYP2B6 by decreasing mRNA and protein levels.
Glucuronidated Drugs
Theoretically, milk thistle might affect the clearance of drugs that undergo glucuronidation.
Laboratory research shows that milk thistle constituents inhibit uridine diphosphoglucuronosyl transferase (UGT), the major phase 2 enzyme that is responsible for glucuronidation. Theoretically, this could decrease the clearance and increase levels of glucuronidated drugs. Other laboratory research suggests that a milk thistle extract of silymarin might inhibit beta-glucuronidase, although the significance of this effect is unclear.
Ledipasvir
Theoretically, milk thistle might increase the levels and clinical effects of ledipasvir.
Animal research in rats shows that milk thistle increases the area under the curve (AUC) for ledipasvir and slows its elimination.
Morphine
Theoretically, concomitant use of milk thistle with morphine might affect serum levels of morphine and either increase or decrease its effects.
Animal research shows that milk thistle reduces serum levels of morphine by up to 66%. In contrast, laboratory research shows that milk thistle constituents inhibit uridine diphosphoglucuronosyl transferase (UGT), the major phase 2 enzyme that is responsible for glucuronidation. Theoretically, this could decrease the clearance and increase morphine levels. The effect of taking milk thistle on morphine metabolism in humans is not known.
Raloxifene (Evista)
Theoretically, milk thistle might decrease the clearance and increase levels of raloxifene.
Laboratory research suggests that the milk thistle constituents silibinin and silymarin inhibit the glucuronidation of raloxifene in the intestines.
Sirolimus (Rapamune)
Milk thistle might decrease the clearance of sirolimus.
Pharmacokinetic research shows that a milk thistle extract of silymarin decreases the apparent clearance of sirolimus in hepatically impaired renal transplant patients. It is unclear if this interaction occurs in patients without hepatic impairment.
Sofosbuvir (Solvaldi)
Theoretically, milk thistle might decrease the levels and clinical effects of sofosbuvir.
Animal research in rats shows that milk thistle reduces the metabolism of sofosbuvir, as well as the hepatic uptake of its active metabolite.
Tamoxifen (Nolvadex)
Theoretically, the milk thistle constituent silibinin might increase tamoxifen levels and interfere with its conversion to an active metabolite.
Animal research suggests that the milk thistle constituent silibinin might increase plasma levels of tamoxifen and alter its conversion to an active metabolite. The mechanism appears to involve inhibition of pre-systemic metabolism of tamoxifen by cytochrome P450 (CYP) 2C9 and CYP3A4, and inhibition of P-glycoprotein-mediated efflux of tamoxifen into the intestine for excretion. Whether this interaction occurs in humans is not known.
Warfarin (Coumadin)
Theoretically, milk thistle might increase the effects of warfarin.
In one case report, a man stabilized on warfarin experienced an increase in INR from 2.64 to 4.12 after taking a combination product containing milk thistle 200 mg daily, as well as dandelion, wild yam, niacinamide, and vitamin B12. Levels returned to normal after stopping the supplement. Although a direct correlation between milk thistle and the change in INR cannot be confirmed, some in vitro research suggests that milk thistle might inhibit cytochrome P450 2C9 (CYP2C9), an enzyme involved in the metabolism of various drugs, including warfarin.
Cytochrome P450 2C9 (Cyp2C9) Substrates
It is unclear if milk thistle inhibits CYP2C9; research is conflicting.
In vitro research suggests that milk thistle might inhibit CYP2C9. Additionally, 3 case reports from the World Health Organization (WHO) adverse drug reaction database describe increased toxicity in patients taking milk thistle and cancer medications that are CYP2C9 substrates, including imatinib and capecitabine. However, contradictory clinical research shows that milk thistle extract does not inhibit CYP2C9 or significantly affect levels of the CYP2C9 substrate tolbutamide. Differences in results could be due to differences in dosages or formulations utilized.
Cytochrome P450 3A4 (Cyp3A4) Substrates
It is unclear if milk thistle inhibits CYP3A4; research is conflicting.
While laboratory research shows conflicting results, pharmacokinetic research shows that taking milk thistle extract 420-1350 mg daily does not significantly affect the metabolism of the CYP3A4 substrates irinotecan, midazolam, or indinavir. However, 8 case reports from the World Health Organization (WHO) adverse drug reaction database describe increased toxicity in patients taking milk thistle and cancer medications that are CYP3A4 substrates, including gefitinib, sorafenib, doxorubicin, and vincristine.
Estrogens
Theoretically, milk thistle might interfere with estrogen therapy through competition for estrogen receptors.
Animal research suggests that a milk thistle extract of silymarin binds to estrogen receptor beta.
Hmg-Coa Reductase Inhibitors ("Statins")
Theoretically, milk thistle might interfere with statin therapy by decreasing the activity of organic anion transporting polypeptide 1B1 (OATB1B1) and inhibiting breast cancer resistance protein (BCRP).
Preliminary evidence suggests that a milk thistle extract of silymarin can decrease the activity of the OATP1B1, which transports HMG-CoA reductase inhibitors into the liver to their site of action, and animal research shows this increases the maximum plasma concentration of pitavastatin and pravastatin. The silibinin component also inhibits BCRP, which transports statins from the liver into the bile for excretion. However, in a preliminary study in healthy males, silymarin 140 mg three times daily had no effect on the pharmacokinetics of a single 10 mg dose of rosuvastatin.
Indinavir (Crixivan)
Theoretically, milk thistle may induce cytochrome P450 3A4 (CYP3A4) enzymes and increase the metabolism of indinavir; however, results are conflicting.
One pharmacokinetic study shows that taking milk thistle (Standardized Milk Thistle, General Nutrition Corp.) 175 mg three times daily in combination with multiple doses of indinavir 800 mg every 8 hours decreases the mean trough levels of indinavir by 25%. However, results from the same pharmacokinetic study show that milk thistle does not affect the overall exposure to indinavir. Furthermore, two other pharmacokinetic studies show that taking specific milk thistle extract (Legalon, Rottapharm Madaus; Thisilyn, Nature's Way) 160-450 mg every 8 hours in combination with multiple doses of indinavir 800 mg every 8 hours does not reduce levels of indinavir.
Organic Anion-Transporting Polypeptide Substrates (Oatp)
Milk thistle may inhibit one form of OATP, OATP-B1, which could reduce the bioavailability and clinical effects of OATP-B1 substrates.
In vitro research shows that milk thistle inhibits OATP-B1. Two case reports from the World Health Organization (WHO) adverse drug reaction database describe increased toxicity in patients taking milk thistle and cancer medications that are OATP substrates, including sorafenib and methotrexate. OATPs are expressed in the small intestine and liver and are responsible for the uptake of drugs and other compounds into the body. Inhibition of OATP may reduce the bioavailability of oral drugs that are substrates of OATP.
P-Glycoprotein Substrates
Theoretically, milk thistle might increase the absorption of P-glycoprotein substrates. However, this effect does not seem to be clinically significant.
In vitro research shows that milk thistle can inhibit P-glycoprotein activity and 1 case report from the World Health Organization (WHO) adverse drug reaction database describes increased abdominal pain in a patient taking milk thistle and the cancer medication vincristine, a P-glycoprotein substrate, though this patient was also taking methotrexate. However, a small pharmacokinetic study in healthy volunteers shows that taking milk thistle (Enzymatic Therapy Inc.) 900 mg, standardized to 80% silymarin, in 3 divided doses daily for 14 days does not affect absorption of digoxin, a P-glycoprotein substrate.
Artichoke Extract
Antidiabetes Drugs
Theoretically, artichoke leaf extract may increase the risk of hypoglycemia when taken with antidiabetes drugs.
A meta-analysis of small clinical studies shows that taking artichoke leaf extract for 8-12 weeks can modestly reduce fasting plasma glucose when compared with placebo.
Antihypertensive Drugs
Theoretically, artichoke leaf extract may increase the risk of hypotension when taken with antihypertensive drugs.
A meta-analysis of small clinical studies in patients with hypertension shows that taking artichoke can reduce systolic blood pressure by around 3 mmHg and diastolic blood pressure by around 2 mmHg when compared with placebo.
Cytochrome P450 2B6 (Cyp2B6) Substrates
Theoretically, artichoke might increase serum levels of drugs metabolized by CYP2B6.
In vitro research shows that artichoke leaf extract inhibits CYP2B6 activity. However, this interaction has not been reported in humans.
Cytochrome P450 2C19 (Cyp2C19) Substrates
Theoretically, artichoke might increase serum levels of drugs metabolized by CYP2C19.
In vitro research shows that artichoke leaf extract inhibits CYP2C19 activity. However, this interaction has not been reported in humans.
Chlorella
Photosensitizing Drugs
Theoretically, chlorella might have additive effects with photosensitizing drugs.
Chlorella has been reported to cause photosensitization. In five case reports, patients who had ingested chlorella exhibited swelling followed by erythematopurpuric lesions on sun-exposed areas of the body. Theoretically, concomitant use with photosensitizing drugs may exacerbate effects.
Warfarin (Coumadin)
Theoretically, chlorella might reduce the clinical effects of warfarin.
Chlorella contains significant amounts of vitamin K. There is at least one case report of warfarin therapy becoming sub-therapeutic after initiation of chlorella supplements.
Selenium
Anticoagulant/Antiplatelet Drugs
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Clinical research suggests that taking selenium 10 mcg/kg/day can increase bleeding times by increasing prostacyclin production, which inhibits platelet activity. Other clinical research suggests that taking selenium 75 mcg daily, in combination with ascorbic acid 600 mg, alpha-tocopherol 300 mg, and beta-carotene 27 mg, reduces platelet aggregation.
Barbiturates
Theoretically, selenium might prolong the sedating effects of barbiturates.
Laboratory research suggests that selenium can inhibit the hepatic metabolism of barbiturates. Selenium seems to prolong the sedative effect of pentobarbital in animal models.
Immunosuppressants
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
In vitro research and preliminary clinical evidence suggests that selenium may stimulate the immune system.
Warfarin (Coumadin)
Theoretically, selenium might interfere with warfarin activity.
Animal research suggests that selenium can increase warfarin activity. Selenium might interact with warfarin by displacing it from albumin binding sites, reducing its metabolism in the liver, or by decreasing production of vitamin K-dependent clotting factors. Selenium can also prolong bleeding times in humans by increasing prostacyclin production, which inhibits platelet activity.
Contraceptive Drugs
Contraceptive drugs might increase levels of selenium, although the clinical significance of this effect is unclear.
Some research suggests that oral contraceptives increase serum selenium levels in women taking oral contraceptives; however, other research shows no change in selenium levels. It is suggested that an increase could be due to increased carrier proteins, indicating a redistribution of selenium rather than a change in total body selenium.
Niacin
Selenium might reduce the beneficial effects of niacin on high-density lipoprotein (HDL) levels.
A combination of niacin and simvastatin (Zocor) effectively raises HDL cholesterol levels in patients with coronary disease and low HDL levels. Clinical research shows that taking a combination of antioxidants (vitamin C, vitamin E, beta-carotene, and selenium) along with niacin and simvastatin (Zocor) attenuates this rise in HDL, specifically the HDL-2 and apolipoprotein A1 fractions, by more than 50% in patients with coronary disease. It is not known whether this adverse effect is due to a single antioxidant such as selenium, or to the combination. It also is not known whether it will occur in other patient populations.
Picrorhiza kurroa Extract
Antidiabetes Drugs
Evidence from animal research suggests that an extract of picrorhiza can reduce fasting and non-fasting blood sugar levels. Theoretically, picrorhiza might have additive effects with antidiabetes drugs and increase the risk of hypoglycemia. Monitor blood glucose levels closely. Dose adjustments might be necessary. Some antidiabetes drugs include glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), and others.
Immunosuppressants
Picrorhiza seems to have immunostimulating activity. Theoretically, picrorhiza may interfere with immunosuppressant therapy. Immunosuppressant drugs include azathioprine (Imuran), basiliximab (Simulect), cyclosporine (Neoral, Sandimmune), daclizumab (Zenapax), muromonab-CD3 (OKT3, Orthoclone OKT3), mycophenolate (CellCept), tacrolimus (FK506, Prograf), sirolimus (Rapamune), prednisone (Deltasone, Orasone), and other corticosteroids (glucocorticoids).
Sodium R-Lipoate
Antihypertensive Drugs
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
High intake of dietary sodium can increase systolic and diastolic blood pressure. Also, high intake of sodium may necessitate increased use of antihypertensive medications to achieve blood pressure control in some patients, such as those with chronic kidney disease.
Corticosteroids
Concomitant use of mineralocorticoids and some glucocorticoids with sodium supplements might increase the risk of hypernatremia.
Mineralocorticoids and some glucocorticoids (corticosteroids) cause sodium retention. This effect is dose-related and depends on mineralocorticoid potency. It is most common with hydrocortisone, cortisone, and fludrocortisone, followed by prednisone and prednisolone.
Didanosine (Videx)
Concomitant use of didanosine with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia.
Didanosine formulations contain a significant amount of sodium.
Lithium
Altering dietary intake of sodium might alter the levels and clinical effects of lithium.
High sodium intake can reduce plasma concentrations of lithium by increasing lithium excretion. Reducing sodium intake can significantly increase plasma concentrations of lithium and cause lithium toxicity in patients being treated with lithium carbonate. Stabilizing sodium intake is shown to reduce the percentage of patients with lithium level fluctuations above 0.8 mEq/L. Patients taking lithium should avoid significant alterations in their dietary intake of sodium.
Sodium Phosphates
Theoretically, concomitant use of sodium phosphate with sodium supplements might increase the risk of hypernatremia.
Use of high doses (> 45 mL in 24 hours) of sodium phosphate, such as those used for bowel cleansing before surgery, can lead to serious electrolyte disturbances, including hypernatremia. The risk of hypernatremia is highest in the elderly and people with other risk factors for electrolyte disturbances.
Sodium-Containing Drugs
Concomitant use of sodium-containing drugs with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia and long-term sodium-related complications.
The Chronic Disease Risk Reduction (CDRR) intake level of 2.3 grams of sodium daily indicates the intake at which it is believed that chronic disease risk increases for the apparently healthy population. Some medications contain high quantities of sodium. When used in conjunction with sodium supplements or high-sodium diets, the CDRR may be exceeded. Additionally, concomitant use may increase the risk for hypernatremia; this risk is highest in the elderly and people with other risk factors for electrolyte disturbances.
Tolvaptan (Samsca)
Theoretically, concomitant use of tolvaptan with sodium might increase the risk of hypernatremia.
Tolvaptan is a vasopressin receptor 2 antagonist that is used to increase sodium levels in patients with hyponatremia. Patients taking tolvaptan should use caution with the use of sodium salts such as sodium chloride.
L-Citrulline
Antihypertensive Drugs
Theoretically, concomitant use of L-citrulline with antihypertensive drugs might have additive effects and increase the chance of hypotension.
L-citrulline is converted to L-arginine, which can increase nitric oxide and cause vasodilation. However, a meta-analysis of 5 small clinical studies suggests that taking L-citrulline 3-6 grams daily for 1-8 weeks does not lower blood pressure when compared with control.
Phosphodiesterase-5 Inhibitors
Theoretically, concurrent use of phosphodiesterase-5 (PDE-5) inhibitors and L-citrulline might result in additive vasodilation.
L-citrulline is converted to L-arginine, which can increase nitric oxide and cause vasodilation. Theoretically, taking L-arginine with PDE-5 inhibitors might have additive vasodilatory and hypotensive effects. However, in studies evaluating the combined use of L-arginine and sildenafil for erectile dysfunction, hypotension was not reported.
Brand information
Manufacturer and brand details for Liver Support Formula, from the product label.
SuperSmart
See all SuperSmart products- Name
- SN Worldwide Unipessoal, LDA
- Street Address
- Avenida Do Infante 66 Edificio Quinta Avenida 1 C
- City
- Funchal
- ZipCode
- 9000-015
Liver Support Formula by SuperSmart: Common Questions
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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The Full Monographs Behind Liver Support Formula’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Methionine
Methionine is an essential amino acid that your body needs for protein building and many basic chemical reactions. Most people get enough from a normal diet, and supplements are generally no...
Read the full Methionine monograph → Herb & supplement monographL-citrulline
Interacts with 178 drugsL-citrulline is an amino acid that the body turns into L-arginine to help make nitric oxide, which relaxes blood vessels and may improve blood flow. It is popular for exercise performance an...
Read the full L-citrulline monograph → Herb & supplement monographSelenium
Interacts with 321 drugsSelenium is an essential trace mineral your body needs in small amounts for thyroid function, antioxidant defense, and immune health. Most people who eat a varied diet get enough, and supple...
Read the full Selenium monograph → Herb & supplement monographChlorella
Interacts with 337 drugsChlorella is a nutrient-rich freshwater green algae taken as a supplement for general wellness, immune support, and 'detox.' Some small studies suggest possible benefits for cholesterol, blo...
Read the full Chlorella monograph → Herb & supplement monographMilk Thistle
Interacts with 954 drugsMilk thistle is a popular herbal supplement most often used for liver health, and its main active component is a group of compounds called silymarin. While it is generally well tolerated, th...
Read the full Milk Thistle monograph → Herb & supplement monographGlutathione
Glutathione is a powerful antioxidant your body makes naturally, and many people take it as a supplement hoping for skin, detox, or anti-aging benefits. However, strong human evidence is lim...
Read the full Glutathione monograph → Herb & supplement monographGinkgo
Interacts with 1,266 drugsGinkgo is one of the world's most popular herbal supplements, mostly taken to support memory and circulation. The evidence for these uses is mixed and generally weak, and it is not proven to...
Read the full Ginkgo monograph → Herb & supplement monographSodium
Interacts with 205 drugsSodium is an essential mineral and electrolyte your body needs to balance fluids, support nerves, and help muscles work. Most people in modern diets get more than enough—often too much—from...
Read the full Sodium monograph → Herb & supplement monographPicrorhiza
Interacts with 207 drugsPicrorhiza (Picrorhiza kurroa) is a bitter Himalayan herb used in Ayurvedic medicine, mainly for liver and digestive complaints. Early lab and small human studies suggest possible liver-prot...
Read the full Picrorhiza monograph → Herb & supplement monographArtichoke
Interacts with 363 drugsArtichoke leaf extract is a generally well-tolerated supplement that may have a mild cholesterol-lowering effect and is often used for indigestion, though the evidence is modest. It is not a...
Read the full Artichoke monograph →Sources & How We Checked
Liver Support Formula's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 297 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Methionine 12 references
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- Btaiche IF, Khalidi N. Parenteral nutrition-associated liver complications in children. Pharmacotherapy 2002;22:188-211.. PubMed
- Cottington EM, LaMantia C, Stabler SP, et al. Adverse event associated with methionine loading test: a case report. Arterioscler Thromb Vasc Biol 2002;22:1046-50.. PubMed
- Anon. Should methionine be added to paracetamol formulations? Drug Ther Perspect 1997;10:11-3. DOI
- Smulders, Y. M., Rakic, M., Slaats, E. H., Treskes, M., Sijbrands, E. J., Odekerken, D. A., Stehouwer, C. D., and Silberbusch, J. Fasting and post-methionine homocysteine levels in NIDDM. Determinants and correlations with retinopathy, albuminuria, and c
- McAuley, D. F., Hanratty, C. G., McGurk, C., Nugent, A. G., and Johnston, G. D. Effect of methionine supplementation on endothelial function, plasma homocysteine, and lipid peroxidation. J.Toxicol.Clin.Toxicol. 1999;37(4):435-440. PubMed
- Hanratty, C. G., McGrath, L. T., McAuley, D. F., Young, I. S., and Johnston, G. D. The effects of oral methionine and homocysteine on endothelial function. Heart 2001;85(3):326-330. PubMed
- Ward, M., McNulty, H., McPartlin, J., Strain, J. J., Weir, D. G., and Scott, J. M. Effect of supplemental methionine on plasma homocysteine concentrations in healthy men: a preliminary study. Int.J.Vitam.Nutr.Res. 2001;71(1):82-86. PubMed
- Yaghmai, R., Kashani, A. H., Geraghty, M. T., Okoh, J., Pomper, M., Tangerman, A., Wagner, C., Stabler, S. P., Allen, R. H., Mudd, S. H., and Braverman, N. Progressive cerebral edema associated with high methionine levels and betaine therapy in a patient
- Talukdar R, Murthy HV, Reddy DN. Role of methionine containing antioxidant combination in the management of pain in chronic pancreatitis: a systematic review and meta-analysis. Pancreatology 2015;15(2):136-44. PubMed
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. Washington, DC: The National Academies Press, 2005. Available at: https://doi.org/10.17226 DOI
- Khairan P, Sobue T, Eshak ES, et al. Association of B Vitamins and Methionine Intake with the Risk of Gastric Cancer: The Japan Public Health Center-based Prospective Study. Cancer Prev Res (Phila) 2022;15(2):101-110. PubMed
L-citrulline 8 references
- Cheng JW, Balwin SN. L-arginine in the management of cardiovascular diseases. Ann Pharmacother 2001;35:755-64. PubMed
- Schwedhelm E, Maas R, Freese R, et al. Pharmacokinetic and pharmacodynamic properties of oral L-citrulline and L-arginine: impact on nitric oxide metabolism. Br J Clin Pharmacol 2008;65:51-9. PubMed
- Romero MJ, Platt DH, Caldwell RB, Caldwell RW. Therapeutic use of citrulline in cardiovascular disease. Cardiovasc Drug Rev 2006;24:275-90. PubMed
- Balderas-Munoz K, Castillo-Martínez L, Orea-Tejeda A, et al. Improvement of ventricular function in systolic heart failure patients with oral L-citrulline supplementation. Cardiol J 2012;19:612-7. PubMed
- Sharif Kashani B, Tahmaseb Pour P, Malekmohammad M, et al. Oral l-citrulline malate in patients with idiopathic pulmonary arterial hypertension and Eisenmenger Syndrome: a clinical trial. J Cardiol 2014;64:231-5. PubMed
- Pérez-Guisado J, Jakeman PM. Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. J Strength Cond Res 2010;24:1215-22. PubMed
- Mirenayat MS, Moradi S, Mohammadi H, Rouhani MH. Effect of L-citrulline supplementation on blood pressure: a systematic review and meta-analysis of clinical trials. Curr Hypertens Rep. 2018;20(11):98. PubMed
- Xu Z, Liu C, Liu S, Zhou Z. Comparison of efficacy and safety of daily oral L-arginine and PDE5Is alone or combination in treating erectile dysfunction: A systematic review and meta-analysis of randomised controlled trials. Andrologia. 2021:e14007. PubMed
Selenium 36 references
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington, DC: National Academy Press, 2000. Available at: http://www.nap.edu/books/0309069351/html/.
- Brown BG, Zhao XQ, Chait A, et al. Simvastatin and niacin, antioxidant vitamins, or the combination for the prevention of coronary disease. N Engl J Med 2001;345:1583-93. DOI
- Trafikowska U, Zachara BA, Wiacek M, et al. Selenium supply and glutathione peroxidase activity in breastfed Polish infants. Acta Paediatr 1996;85:1143-5. PubMed
- Duffield-Lillico AJ, Slate EH, Reid ME, et al. Selenium supplementation and secondary prevention of nonmelanoma skin cancer in a randomized trial. J Natl Cancer Inst 2003;95:1477-81.. PubMed
- Cheung MC, Zhao XQ, Chait A, et al. Antioxidant supplements block the response of HDL to simvastatin-niacin therapy in patients with coronary artery disease and low HDL. Arterioscler Thromb Vasc Biol 2001;21:1320-6. PubMed
- Schiavon R, Freeman GE, Guidi GC, et al. Selenium enhances prostacyclin production by cultured endothelial cells: possible explanation for increased bleeding times in volunteers taking selenium as a dietary supplement. Thromb Res 1984;34:389-96. PubMed
- Davila JC, Edds GT, Osuna O, Simpson CF. Modification of the effects of aflatoxin B1 and warfarin in young pigs given selenium. Am J Vet Res 1983;44:1877-83. DOI
- Heese HD, Lawrence MA, Dempster WS, Pocock F. Reference concentrations of serum selenium and manganese in healthy nulliparas. S Afr Med J 1988;73:163-5.
- Lloyd B, Lloyd RS, Clayton BE. Effect of smoking, alcohol and other factors on the selenium status of a healthy population. J Epidemiol Commun Health 1983;37:213-7. PubMed
- Capel ID, Jenner M, Williams DC, et al. The effect of prolonged oral contraceptive steroid use on erythrocyte glutathione peroxidase activity. J Steroid Biochem 1981;14:729-32. PubMed
- Contempre B, Dumont JE, Ngo B, et al. Effect of selenium supplementation in hypothyroid subjects of an iodine and selenium deficient area: the possible danger of indiscriminate supplementation of iodine-deficient subjects with selenium. J Clin Endocrinol PubMed
- Hofbauer LC, Spitzweg C, Magerstadt RA, Heufelder AE. Selenium-induced thyroid dysfunction. Postgrad Med J 1997;73:103-4. PubMed
- Debski B, Milner JA. Dietary selenium supplementation prolongs pentobarbital induced hypnosis. J Nutr Biochem 2004;15:548-53. PubMed
- Ishikawa M, Sasaki M, Koiwai K, et al. Inhibition of hepatic mixed-function oxidase enzymes in mice by acute and chronic treatment with selenium. J Pharmacobiodyn 1992;15:377-85. PubMed
- Lippmann SM, Klein EA, Goodman PJ, et al. Effect of selenium and vitamin E on risk of prostate cancer and other cancers: the selenium and vitamin E cancer prevention trial (SELECT). JAMA 2009;301:39-51. DOI
- Reid SM, Middleton P, Cossich MC, Crowther CA. Interventions for clinical and subclinical hypothyroidism in pregnancy. Cochrane Database Syst Rev 2010;(7):CD007752. PubMed
- Vinceti, M., Wei, E. T., Malagoli, C., Bergomi, M., and Vivoli, G. Adverse health effects of selenium in humans. Rev.Environ.Health 2001;16(4):233-251. PubMed
- Abrams, C. K., Siram, S. M., Galsim, C., Johnson-Hamilton, H., Munford, F. L., and Mezghebe, H. Selenium deficiency in long-term total parenteral nutrition. Nutr Clin Pract 1992;7(4):175-178. PubMed
- Spiller, H. A. and Pfiefer, E. Two fatal cases of selenium toxicity. Forensic Sci Int 8-24-2007;171(1):67-72. PubMed
- Negro, R., Greco, G., Mangieri, T., Pezzarossa, A., Dazzi, D., and Hassan, H. The influence of selenium supplementation on postpartum thyroid status in pregnant women with thyroid peroxidase autoantibodies. J Clin Endocrinol.Metab 2007;92(4):1263-1268. PubMed
- Alexander, J. Selenium. Novartis.Found.Symp 2007;282:143-149.
- Salonen, J. T., Salonen, R., Seppanen, K., Rinta-Kiikka, S., Kuukka, M., Korpela, H., Alfthan, G., Kantola, M., and Schalch, W. Effects of antioxidant supplementation on platelet function: a randomized pair-matched, placebo-controlled, double-blind trial
- Kupka, R., Mugusi, F., Aboud, S., Msamanga, G. I., Finkelstein, J. L., Spiegelman, D., and Fawzi, W. W. Randomized, double-blind, placebo-controlled trial of selenium supplements among HIV-infected pregnant women in Tanzania: effects on maternal and chil
- Kamble, P., Mohsin, N., Jha, A., Date, A., Upadhaya, A., Mohammad, E., Khalil, M., Pakkyara, A., and Budruddin, M. Selenium intoxication with selenite broth resulting in acute renal failure and severe gastritis. Saudi.J Kidney Dis.Transpl. 2009;20(1):106
- Peretz, A., Neve, J., Desmedt, J., Duchateau, J., Dramaix, M., and Famaey, J. P. Lymphocyte response is enhanced by supplementation of elderly subjects with selenium-enriched yeast. Am.J Clin.Nutr. 1991;53(5):1323-1328. PubMed
- Kumpulainen, J., Salmenpera, L., Siimes, M. A., Koivistoinen, P., and Perheentupa, J. Selenium status of exclusively breast-fed infants as influenced by maternal organic or inorganic selenium supplementation. Am.J Clin.Nutr. 1985;42(5):829-835. PubMed
- Han, L. and Zhou, S. M. Selenium supplement in the prevention of pregnancy induced hypertension. Chin Med J (Engl) 1994;107(11):870-871.
- Kiremidjian-Schumacher, L., Roy, M., Wishe, H. I., Cohen, M. W., and Stotzky, G. Supplementation with selenium and human immune cell functions. II. Effect on cytotoxic lymphocytes and natural killer cells. Biol.Trace Elem.Res. 1994;41(1-2):115-127. PubMed
- Srivastava, A. K., Gupta, B. N., Bihari, V., and Gaur, J. S. Generalized hair loss and selenium exposure. Vet.Hum.Toxicol. 1995;37(5):468-469.
- Sudfeld CR, Aboud S, Kupka R, et al. Effect of selenium supplementation on HIV-1 RNA detection in breast milk of Tanzanian women. Nutrition 2014;30(9):1081-4. PubMed
- Rees K, Hartley L, Day C, et al. Selenium supplementation for the primary prevention of cardiovascular disease. Cochrane Database Syst Rev 2013;1:CD009671. PubMed
- Thompson PA, Ashbeck EL, Roe DJ, et al. Selenium Supplementation for Prevention of Colorectal Adenomas and Risk of Associated Type 2 Diabetes. J Natl Cancer Inst. 2016;108(12). PubMed
- Wichman J, Winther KH, Bonnema SJ, Hegedüs L. Selenium supplementation significantly reduces thyroid autoantibody levels in patients with chronic autoimmune thyroiditis: a systematic review and meta-analysis. Thyroid 2016;26(12):1681-92. PubMed
- Vinceti M, Filippini T, Rothman KJ. Selenium exposure and the risk of type 2 diabetes: a systematic review and meta-analysis. Eur J Epidemiol. 2018 Sep;33(9):789-810. Epub 2018 Jul 5. Review. PubMed
- Fallah S, Sani FV, Firoozrai M. Effect of contraceptive pill on the selenium and zinc status of healthy subjects. Contraception. 2009;80(1):40-3. PubMed
- Malpas CB, Vivash L, Genc S, et al. A Phase IIa Randomized Control Trial of VEL015 (Sodium Selenate) in Mild-Moderate Alzheimer's Disease. J Alzheimers Dis. 2016;54(1):223-232. PubMed
Chlorella 13 references
- Peirce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York, NY: William Morrow and Co., 1999.
- Ng TP, Tan WC, Lee YK. Occupational asthma in a pharmacist induced by chlorella, a unicellular algae preparation. Resp Med 1994;88:555-7. PubMed
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