Varitonin Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Varitonin 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
Varitonin is a dietary supplement by Douglas Laboratories with 5 active ingredients. Its ingredients are commonly taken for common cold and immune support, antioxidant support, skin health and collagen formation.Based on those ingredients, 1,100 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Hesperidin Methyl Chalcone, Gotu Kola, Vitamin C. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Varitonin by Douglas Laboratories
Ask about any prescription or over-the-counter medication and we check it for interactions with Varitonin by Douglas Laboratories — 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 Varitonin by Douglas Laboratories
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
Varitonin contains five active ingredients. Vitamin C supports immune function and acts as an antioxidant.
Hesperidin Methyl Chalcone is a modified form of hesperidin, a compound from citrus. Horse Chestnut seed extract has been traditionally used for vein and circulation concerns.
Gotu Kola, an herb also called Centella asiatica, is used in traditional medicine for wound healing and vein health. Butcher's Broom is a plant extract traditionally used for circulation and vein support.
The capsule also contains inactive ingredients — hydroxypropyl methylcellulose and vegetable stearate — which are used as binders and flow agents to hold the formula together.
Does it work?
Moderate evidence
The evidence for this product's individual ingredients is mixed and often limited. Vitamin C is effective for preventing vitamin C deficiency and possibly helpful for anemia of chronic disease, exercise-related respiratory infections, atrial fibrillation, and cataracts.
Hesperidin has not shown effectiveness for obesity or high cholesterol in the studies we have; evidence for its use in nonalcoholic fatty liver disease is insufficient. Horse Chestnut is possibly effective for chronic venous insufficiency (poor circulation in the legs) but evidence is insufficient for hemorrhoids, irritable bowel syndrome, and kidney stones.
Gotu Kola is possibly effective for venous insufficiency and burns but not for radiation dermatitis or cognitive function; evidence for Alzheimer disease and generalized anxiety is insufficient. Butcher's Broom is possibly effective for chronic venous insufficiency but lacks reliable evidence for diabetic retinopathy, hemorrhoids, orthostatic low blood pressure, and lymphedema.
How safe is it?
Well-documented data
Vitamin C is generally well tolerated at normal dietary and supplement doses; at very high doses (above 2 grams daily), it can cause abdominal cramps, heartburn, diarrhea, nausea, and vomiting. Kidney stones have been reported in people prone to them.
During pregnancy, normal amounts from food and prenatal vitamins are fine, but avoid high-dose supplements unless your doctor advises it. Hesperidin is generally well tolerated in food amounts and short-term use, though long-term safety data is limited; it should be avoided during pregnancy and breastfeeding due to insufficient safety information.
Horse Chestnut seed extract (properly processed to remove toxic constituents) is generally well tolerated and may cause dizziness, gastrointestinal upset, headache, or itching; however, it should be avoided during pregnancy and breastfeeding. Gotu Kola is generally well tolerated short-term but may cause nausea or gastric irritation; there are rare case reports of liver toxicity, though causation is unclear.
It should be avoided during pregnancy and breastfeeding. Butcher's Broom is generally well tolerated short-term in healthy adults and may cause diarrhea, indigestion, heartburn, nausea, or vomiting; it should be avoided during pregnancy and breastfeeding.
Meds to double-check
Moderate interaction found
Before taking Varitonin, check with your pharmacist if you take blood thinners or antiplatelet drugs (including warfarin) — vitamin C, hesperidin, and horse chestnut may increase bleeding risk or reduce warfarin's effectiveness. Also double-check if you take heart medications such as verapamil or diltiazem, blood pressure medications (including alpha-blockers), sedating drugs (CNS depressants), chemotherapy drugs, or any medications processed through the liver.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
Varitonin is a multi-ingredient circulation supplement with five active ingredients, each with modest to limited evidence for vein and blood flow support. If you take any blood thinners, heart medications, blood pressure drugs, sedatives, or chemotherapy, you must check this product against your specific medications before starting — interactions are possible.
Talk with your pharmacist or doctor before use, especially if you're pregnant, breastfeeding, or have liver concerns.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 5 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Oct 23, 2020.
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 Varitonin, straight from the product label.
| Brand | Douglas Laboratories |
|---|---|
| Barcode (UPC) | 745287200384 |
| Net contents | 60 Vegetarian Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Oct 23, 2020 |
| DSLD ID | 237975 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten Free |
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 Varitonin by Douglas Laboratories, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin C | 250 mg | 278% |
| Hesperidin Methyl Chalcone | 125 mg | -- |
| Horse Chestnut | 250 mg | -- |
| Gotu Kola | 60 mg | -- |
| Butcher's Broom | 50 mg | -- |
Other ingredients: Hydroxypropyl Methylcellulose, Vegetable Stearate
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.
Suggested/Recommended/Usage/Directions
Suggested Usage: As a dietary supplement, adults take 1 capsule, 1-2 times daily or as directed by your health professional.
Precautions
Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.
Keep out of the reach of children.
Use only if safety seal is intact.
Storage
Store in a cool, dry place.
Formulation
Gluten-free, non-GMO
Comprehensive venous and circulatory support
FDA Disclaimer Statement
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
General Statements
Scan to learn about our manufacturing excellence Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity.
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Varitonin by Douglas Laboratories 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 Varitonin by Douglas Laboratories
These are the 5 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Vegetarian Capsule(s) Dosage formCapsule Servings per container60 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.
Vitamin C
Interacts with207 drugs
Vitamin C (ascorbic acid) is an essential nutrient your body needs but cannot make, so you must get it from food or supplements. It's important for im...
Vitamin C monograph & interactionsHesperidin Methyl Chalcone
Interacts with702 drugs
Hesperidin is a flavonoid found in citrus fruits that is often combined with diosmin and used for vein and circulation problems like hemorrhoids and v...
Hesperidin Methyl Chalcone monograph & interactionsHorse Chestnut
Interacts with122 drugs
Horse chestnut seed extract is most often used for chronic venous insufficiency, where standardized products may help reduce leg swelling, pain, and h...
Horse Chestnut monograph & interactionsGotu Kola
Interacts with579 drugs
Gotu kola is a traditional Ayurvedic and Asian herb that people use for wound healing, circulation, skin problems, and as a calming or memory-supporti...
Gotu Kola monograph & interactionsButcher's Broom
Interacts with158 drugs
Butcher's broom is a plant extract most often used for circulation problems in the legs, such as chronic venous insufficiency, where some evidence sug...
Butcher's Broom monograph & interactionsOther (inactive) ingredients: Hydroxypropyl Methylcellulose, Vegetable Stearate. These complete the product’s ingredient list but are not active constituents.
Varitonin by Douglas Laboratories Drug Interactions
HelloPharmacist Interaction Report
Varitonin by Douglas Laboratories contains five active ingredients, and our data shows documented interactions across a range of medications.
Vitamin C is responsible for the most serious interactions — it can reduce the effectiveness of warfarin (a blood thinner), potentially lowering how well it prevents clots, and it may also interfere with chemotherapy drugs including alkylating agents and antitumor antibiotics by counteracting their free-radical-generating effects.
Read the full breakdown — every affected drug type, severity by severity
Hesperidin Methyl Chalcone interacts with several drug types: it may increase bleeding risk if you take anticoagulants or blood thinners (antiplatelet drugs); it could theoretically boost levels of the heart medications verapamil and diltiazem, or reduce levels of celiprolol. It may also add to the effects of blood pressure-lowering medications and sedating drugs, and theoretically might increase levels of certain other medications processed through a specific transport mechanism.
Horse Chestnut may increase bleeding risk with anticoagulants or antiplatelet drugs. Gotu Kola theoretically adds to sedation when combined with CNS depressants (like benzodiazepines or opioids), and may have additive effects with drugs that stress the liver.
Butcher's Broom may oppose the effects of blood pressure medications that block alpha-adrenergic signaling, or amplify those that activate that pathway.
Altogether, these interactions span 1,082 individual medications. Use the medication checker on this page to confirm whether any of your prescriptions or over-the-counter drugs are affected.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Varitonin?
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 Varitonin interact with 1,100 drugs. Click any drug to see the details.
5 of the 5 ingredients in Varitonin interact with drugs. Each result below shows which ingredient is responsible. Hesperidin Methyl Chalcone Gotu Kola Vitamin C Butcher's Broom Horse Chestnut
"phentolamineOraVerse, Rogitine, Ryzumvi
How "phentolamine interacts with Varitonin — through 1 ingredient. Tap an ingredient for the detail:
Butcher's BroomAlpha-adrenergic Antagonists Moderate
Interaction Summary
Theoretically, butcher's broom might reduce the effects of alpha-adrenergic antagonists.
Read the full Butcher's Broom + "phentolamine interaction6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Varitonin — through 1 ingredient. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + 6-mercaptopurine interactionAbacavir Sulfate, Dolutegravir, LamivudineTriumeq
How Abacavir Sulfate, Dolutegravir, Lamivudine interacts with Varitonin — through 1 ingredient. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Abacavir Sulfate, Dolutegravir, Lamivudine interactionAbacavir, LamivudineEpzicom
How Abacavir, Lamivudine interacts with Varitonin — through 1 ingredient. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Abacavir, Lamivudine interactionAbciximabReoPro
How Abciximab interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, hesperidin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Hesperidin Methyl Chalcone + Abciximab interactionHorse ChestnutAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Horse chestnut may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Horse Chestnut + Abciximab interactionAbiraterone
How Abiraterone interacts with Varitonin — through 1 ingredient. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Varitonin — through 1 ingredient. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, hesperidin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Hesperidin Methyl Chalcone + Abrocitinib interactionHorse ChestnutAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Horse chestnut may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Horse Chestnut + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Varitonin — through 1 ingredient. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeP-glycoprotein Substrates Moderate
Interaction Summary
Theoretically, hesperidin might inhibit P-glycoprotein-mediated drug efflux and potentially increase levels of drugs that are substrates of P-glycoprotein.
Read the full Hesperidin Methyl Chalcone + Acalabrutinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Varitonin — through 1 ingredient. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acebutolol interactionHesperidin Methyl ChalconeAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, taking hesperidin with antihypertensive drugs might increase the risk of hypotension.
Read the full Hesperidin Methyl Chalcone + Acebutolol interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, hesperidin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Hesperidin Methyl Chalcone + Acenocoumarol interactionHorse ChestnutAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Horse chestnut may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Horse Chestnut + Acenocoumarol interactionAcepromazineAtravet
How Acepromazine interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acepromazine interactionGotu KolaCns Depressants Moderate
Interaction Summary
Theoretically, taking gotu kola might increase the sedative effects of CNS depressants.
Read the full Gotu Kola + Acepromazine interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Varitonin — through 4 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, hesperidin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Aspirin interactionHorse ChestnutAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Horse chestnut may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Horse Chestnut + Acetaminophen, Aspirin interactionGotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Aspirin interactionVitamin CAcetaminophen (tylenol, Others), Aspirin Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Varitonin — through 4 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, hesperidin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Aspirin, Caffeine interactionHorse ChestnutAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Horse chestnut may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Horse Chestnut + Acetaminophen, Aspirin, Caffeine interactionGotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Aspirin, Caffeine interactionVitamin CAspirin, Acetaminophen (tylenol, Others) Minor
Interaction Summary
Acidification of the urine by vitamin C might increase aspirin levels.
Read the full Vitamin C + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Varitonin — through 3 ingredients. Tap an ingredient for the detail:
Butcher's BroomAlpha-adrenergic Agonists Moderate
Interaction Summary
Theoretically, butcher's broom might increase the effects and adverse effects of alpha-adrenergic agonists.
Read the full Butcher's Broom + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionGotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Butalbital interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Butalbital, Caffeine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Varitonin — through 3 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Butalbital, Caffeine, Codeine interactionGotu KolaHepatotoxic Drugs, Cns Depressants Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Butalbital, Caffeine, Codeine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Varitonin — through 3 ingredients. Tap an ingredient for the detail:
Gotu KolaCns Depressants, Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola might increase the sedative effects of CNS depressants.
Read the full Gotu Kola + Acetaminophen, Butalbital, Codeine interactionHesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Butalbital, Codeine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Varitonin — through 3 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Butalbital, Codeine Phosphate interactionGotu KolaCns Depressants, Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola might increase the sedative effects of CNS depressants.
Read the full Gotu Kola + Acetaminophen, Butalbital, Codeine Phosphate interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Varitonin — through 4 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionButcher's BroomAlpha-adrenergic Agonists Moderate
Interaction Summary
Theoretically, butcher's broom might increase the effects and adverse effects of alpha-adrenergic agonists.
Read the full Butcher's Broom + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionGotu KolaCns Depressants, Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola might increase the sedative effects of CNS depressants.
Read the full Gotu Kola + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Varitonin — through 3 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs, Cns Depressants Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Caffeine, Codeine interactionHesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Caffeine, Codeine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Varitonin — through 3 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Caffeine, Codeine, Salicylamide interactionGotu KolaCns Depressants, Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola might increase the sedative effects of CNS depressants.
Read the full Gotu Kola + Acetaminophen, Caffeine, Codeine, Salicylamide interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Varitonin — through 3 ingredients. Tap an ingredient for the detail:
Hesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Caffeine, Dihydrocodeine interactionGotu KolaHepatotoxic Drugs, Cns Depressants Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Caffeine, Dihydrocodeine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Caffeine, Isometheptene interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Caffeine, Isometheptene interactionAcetaminophen, Caffeine, PyrilamineMidol Max Strength Menstrual
How Acetaminophen, Caffeine, Pyrilamine interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Caffeine, Pyrilamine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Caffeine, Pyrilamine interactionAcetaminophen, Chlorpheniramine Maleate, Dextromethorphan HbrVicks Formula 44M Cough, Cold & Flu Relief
How Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interacts with Varitonin — through 2 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine Maleate, Dextromethorphan Hbr interactionAcetaminophen, Chlorpheniramine, Codeine, PhenylephrineColrex
How Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interacts with Varitonin — through 4 ingredients. Tap an ingredient for the detail:
Gotu KolaHepatotoxic Drugs, Cns Depressants Moderate
Interaction Summary
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
Read the full Gotu Kola + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionButcher's BroomAlpha-adrenergic Agonists Moderate
Interaction Summary
Theoretically, butcher's broom might increase the effects and adverse effects of alpha-adrenergic agonists.
Read the full Butcher's Broom + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionHesperidin Methyl ChalconeCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Read the full Hesperidin Methyl Chalcone + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionVitamin CAcetaminophen (tylenol, Others) Minor
Interaction Summary
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
Read the full Vitamin C + Acetaminophen, Chlorpheniramine, Codeine, Phenylephrine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Varitonin 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.
Hesperidin Methyl Chalcone
Anticoagulant/Antiplatelet Drugs
Theoretically, hesperidin may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Animal research suggests that hesperetin, a bioflavonoid aglycone derivative of hesperidin, may have antiplatelet activity.
Antihypertensive Drugs
Theoretically, taking hesperidin with antihypertensive drugs might increase the risk of hypotension.
Some clinical and animal research shows that hesperidin can decrease blood pressure. However, other clinical research shows that hesperidin does not affect blood pressure.
Celiprolol (Celicard)
Theoretically, hesperidin may decrease the levels and clinical effects of celiprolol.
Animal research shows that concomitant use of hesperidin may reduce the plasma area under the curve of celiprolol by up to 75%. This effect has not been reported in humans.
Cns Depressants
Theoretically, concomitant use with CNS depressants may cause additive sedative effects.
Animal studies show that hesperidin has sedative effects, due to opioid receptor activity and can increase sedation when used with diazepam. This effect has not been reported in humans.
Diltiazem (Cardizem, Others)
Theoretically, hesperidin may increase the levels and clinical effects of diltiazem.
Animal research suggests that hesperidin may enhance the bioavailability of diltiazem, increasing the plasma area under the curve of diltiazem by up to 65.3%. This effect has not been reported in humans.
P-Glycoprotein Substrates
Theoretically, hesperidin might inhibit P-glycoprotein-mediated drug efflux and potentially increase levels of drugs that are substrates of P-glycoprotein.
In vitro research shows that hesperidin can inhibit P-glycoprotein efflux. This effect has not been reported in humans.
Verapamil (Calan, Others)
Theoretically, hesperidin might increase the levels and clinical effects of verapamil.
Animal research suggests that hesperidin may enhance the bioavailability of verapamil, increasing the plasma area under the curve of verapamil by 96.8%. This effect has not been reported in humans
Gotu Kola
Cns Depressants
Theoretically, taking gotu kola might increase the sedative effects of CNS depressants.
In vitro research suggests that gotu kola may have sedative effects via binding of GABA receptors.
Hepatotoxic Drugs
Theoretically, taking gotu kola with hepatotoxic drugs might have additive adverse effects.
There are at least four case reports of hepatotoxicity associated with the use of gotu kola. However, more information is needed to determine if gotu kola was the causative factor in these cases.
Vitamin C
Alkylating Agents
Theoretically, antioxidant effects of vitamin C might reduce the effectiveness of alkylating agents.
The use of antioxidants like vitamin C during chemotherapy is controversial. There is concern that antioxidants could reduce the activity of chemotherapy drugs that generate free radicals, such as cyclophosphamide, chlorambucil, carmustine, busulfan, and thiotepa. In contrast, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that could interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effect, if any, antioxidants such as vitamin C have on chemotherapy.
Aluminum
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Research in animals and humans shows that vitamin C increases aluminum absorption, theoretically by chelating aluminum and keeping it in solution where it is available for absorption. In people with normal renal function, urinary excretion of aluminum will likely increase, making aluminum retention and toxicity unlikely. Patients with renal failure who take aluminum-containing compounds such as phosphate binders should avoid vitamin C supplements in doses above the recommended dietary allowances.
Antitumor Antibiotics
Theoretically, the antioxidant effects of vitamin C might reduce the effectiveness of antitumor antibiotics.
The use of antioxidants like vitamin C during chemotherapy is controversial. There is concern that antioxidants could reduce the activity of chemotherapy drugs which generate free radicals, such as doxorubicin. In contrast, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that could interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effects, if any, antioxidants such as vitamin C have on chemotherapy.
Estrogens
Vitamin C might increase blood levels of estrogens.
Increases in plasma estrogen levels of up to 55% occur under some circumstances when vitamin C is taken concurrently with oral contraceptives or hormone replacement therapy, including topical products. It is suggested that vitamin C prevents oxidation of estrogen in the tissues, regenerates oxidized estrogen, and reduces sulfate conjugation of estrogen in the gut wall. When tissue levels of vitamin C are high, these processes are already maximized and supplemental vitamin C does not have any effect on estrogen levels. Increases in plasma estrogen levels may occur when patients who are deficient in vitamin C take supplements. Monitor these patients for estrogen-related side effects.
Fluphenazine (Prolixin)
Theoretically, vitamin C might decrease levels of fluphenazine.
In one patient there was a clinically significant decrease in fluphenazine levels when vitamin C (500 mg twice daily) was started. The mechanism is not known, and there is no further data to confirm this interaction.
Indinavir (Crixivan)
Vitamin C can modestly reduce indinavir levels.
One pharmacokinetic study shows that taking vitamin C 1 gram orally once daily along with indinavir 800 mg orally three times daily reduces the area under the concentration-time curve of indinavir by 14%. The mechanism of this interaction is unknown, but it is unlikely to be clinically significant in most patients. The effect of higher doses of vitamin C on indinavir levels is unknown.
Levothyroxine (Synthroid, Others)
Vitamin C can increase levothyroxine absorption.
Two clinical studies in adults with poorly controlled hypothyroidism show that swallowing levothyroxine with a glass of water containing vitamin C 500-1000 mg in solution reduces thyroid stimulating hormone (TSH) levels and increases thyroxine (T4) levels when compared with taking levothyroxine alone. This suggests that vitamin C increases the oral absorption of levothyroxine, possibly due to a reduction in pH.
Warfarin (Coumadin)
High-dose vitamin C might reduce the levels and effectiveness of warfarin.
Vitamin C in high doses may cause diarrhea and possibly reduce warfarin absorption. There are reports of two people who took up to 16 grams daily of vitamin C and had a reduction in prothrombin time. Lower doses of 5-10 grams daily can also reduce warfarin absorption. In many cases, this does not seem to be clinically significant. However, a case of warfarin resistance has been reported for a patient who took vitamin C 500 mg twice daily. Cessation of vitamin C supplementation resulted in a rapid increase in international normalized ratio (INR). Tell patients taking warfarin to avoid taking vitamin C in excessively high doses (greater than 10 grams daily). Lower doses may be safe, but the anticoagulation activity of warfarin should be monitored. Patients who are stabilized on warfarin while taking vitamin C should avoid adjusting vitamin C dosage to prevent the possibility of warfarin resistance.
Acetaminophen (Tylenol, Others)
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
A small pharmacokinetic study in healthy volunteers shows that taking high-dose vitamin C (3 grams) 1.5 hours after taking acetaminophen 1 gram slightly increases the apparent half-life of acetaminophen from around 2.3 hours to 3.1 hours. Ascorbic acid competitively inhibits sulfate conjugation of acetaminophen. However, to compensate, elimination of acetaminophen glucuronide and unconjugated acetaminophen increases. This effect is not likely to be clinically significant.
Aspirin
Acidification of the urine by vitamin C might increase aspirin levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams daily of vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction is not clinically significant.
Choline Magnesium Trisalicylate (Trilisate)
Acidification of the urine by vitamin C might increase choline magnesium trisalicylate levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams daily of vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction probably is not clinically significant.
Niacin
Vitamin C might decrease the beneficial effects of niacin on high-density lipoprotein (HDL) cholesterol 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 vitamin C, or to the combination. It also is not known whether it will occur in other patient populations.
Salsalate (Disalcid)
Acidification of the urine by vitamin C might increase salsalate levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams/day vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction probably is not clinically significant.
Butcher's Broom
Alpha-Adrenergic Agonists
Theoretically, butcher's broom might increase the effects and adverse effects of alpha-adrenergic agonists.
Animal and in vitro studies show that butcher's broom has alpha-adrenergic agonist effects.
Alpha-Adrenergic Antagonists
Theoretically, butcher's broom might reduce the effects of alpha-adrenergic antagonists.
Animal and in vitro studies show that butcher's broom has alpha-adrenergic agonist effects.
Horse Chestnut
Anticoagulant/Antiplatelet Drugs
Horse chestnut may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Horse chestnut contains the constituent esculin which has been shown to have antithrombotic effects. Therefore, horse chestnut might have antiplatelet effects. This has not been shown in humans.
Brand information
Manufacturer and brand details for Varitonin, from the product label.
Douglas Laboratories
See all Douglas Laboratories products- Name
- Douglas Laboratories
- Street Address
- 600 Boyce Road
- City
- Pittsburgh
- State
- PA
- ZipCode
- 15205
- Phone Number
- 1.800.245.4440
- Web Address
- www.douglaslabs.com
Varitonin by Douglas Laboratories: Common Questions
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Varitonin’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Vitamin C
Interacts with 207 drugsVitamin C (ascorbic acid) is an essential nutrient your body needs but cannot make, so you must get it from food or supplements. It's important for immune function, collagen, and acts as an...
Read the full Vitamin C monograph → Herb & supplement monographHesperidin
Interacts with 702 drugsHesperidin is a flavonoid found in citrus fruits that is often combined with diosmin and used for vein and circulation problems like hemorrhoids and varicose veins. Some evidence supports th...
Read the full Hesperidin monograph → Herb & supplement monographHorse Chestnut
Interacts with 122 drugsHorse chestnut seed extract is most often used for chronic venous insufficiency, where standardized products may help reduce leg swelling, pain, and heaviness. Raw, unprocessed horse chestnu...
Read the full Horse Chestnut monograph → Herb & supplement monographGotu Kola
Interacts with 579 drugsGotu kola is a traditional Ayurvedic and Asian herb that people use for wound healing, circulation, skin problems, and as a calming or memory-supporting herb. Some early studies suggest poss...
Read the full Gotu Kola monograph → Herb & supplement monographButcher's Broom
Interacts with 158 drugsButcher's broom is a plant extract most often used for circulation problems in the legs, such as chronic venous insufficiency, where some evidence suggests it may help reduce swelling and di...
Read the full Butcher's Broom monograph →Sources & How We Checked
Varitonin'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 112 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.
Vitamin C 51 references
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- Morris JC, Beeley L, Ballantine N. Interaction of ethinyloestradiol with ascorbic acid in man [letter]. Br Med J (Clin Res Ed) 1981;283:503.
- Labriola D, Livingston R. Possible interactions between dietary antioxidants and chemotherapy. Oncology 1999;13:1003-8.
- Dwyer JH, Merz NB, Shirocre AM, et al. Progression of early atherosclerosis and intake of vitamin C and vitamin E from supplements and food. The Los Angeles Atherosclerosis Study. 41st Annual Conference on Cardiovascular Disease Epidemiology and Prevent
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- Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
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- 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/.
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- 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
- Rosenthal G. Interaction of ascorbic acid and warfarin. JAMA 1971;215:1671. DOI
- Hume R, Johnstone JM, Weyers E. Interaction of ascorbic acid and warfarin. JAMA 1972;219:1479. DOI
- Smith EC, Skalski RJ, Johnson GC, Rossi GV. Interaction of ascorbic acid and warfarin. JAMA 1972;221:1166. DOI
- Traxer O, Huet B, Poindexter J, et al. Effect of ascorbic acid consumption on urinary stone risk factors. J Urol 2003;170:397-401.. PubMed
- Domingo JL, Gomez M, Llobet JM, Richart C. Effect of ascorbic acid on gastrointestinal aluminum absorption (letter). Lancet 1991;338:1467.
- Domingo JL, Gomez M, Llobet JM, Corbella J. Influence of some dietary constituents on aluminum absorption and retention in rats. Kidney Int 1991;39:598-601. PubMed
- Partridge NA, Regnier FE, White JL, Hem SL. Influence of dietary constituents on intestinal absorption of aluminum. Kidney Int 1989;35:1413-7. PubMed
- Mc Leod DC, Nahata MC. Inefficacy of ascorbic acid as a urinary acidifier (letter). N Engl J Med 1977;296:1413. DOI
- Hansten PD, Hayton WL. Effect of antacid and ascorbic acid on serum salicylate concentration. J Clin Pharmacol 1980;20:326-31. PubMed
- Dysken MW, Cumming RJ, Channon RA, Davis JM. Drug interaction between ascorbic acid and fluphenazine. JAMA 1979;241:2008. DOI
- Vihtamaki T, Parantainen J, Koivisto AM, et al. Oral ascorbic acid increases plasma oestradiol during postmenopausal hormone replacement therapy. Maturitas 2002;42:129-35. PubMed
- Slain D, Amsden JR, Khakoo RA, et al. Effect of high-dose vitamin C on the steady-state pharmacokinetics of the protease inhibitor indinavir in healthy volunteers. Pharmacotherapy 2005;25:165-70. 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
- Feetam CL, Leach RH, Meynell MJ. Lack of a clinically important interaction between warfarin and ascorbic acid. Toxicol Appl Pharmacol 1975;31:544-7. PubMed
- Weintraub M, Griner PF. Warfarin and ascorbic acid: lack of evidence for a drug interaction. Toxicol Appl Pharmacol 1974;28:53-6. PubMed
- Lee DH, Folsom AR, Harnack L, et al. Does supplemental vitamin C increase cardiovascular disease risk in women with diabetes? Am J Clin Nutr 2004;80:1194-200. PubMed
- Taylor EN, Stampfer MJ, Curhan GC. Dietary factors and the risk of incident kidney stones in men: new insights after 14 years of follow-up. J Am Soc Nephrol 2004;15:3225-32. PubMed
- Ward NC, Hodgson JM, Croft KD, et al. The combination of vitamin C and grape-seed polyphenols increases blood pressure: a randomized, double-blind, placebo-controlled trial. J Hypertens 2005;23:427-34.. PubMed
- Prasad KN. Rationale for using high-dose multiple dietary antioxidants as an adjunct to radiation therapy and chemotherapy. J Nutr 2004;134:3182S-3S. PubMed
- Conklin KA. Cancer chemotherapy and antioxidants. J Nutr 2004;134:3201S-3204S. PubMed
- Fairweather-Tait S, Hickson K, McGaw B, et al. Orange juice enhances aluminium absorption from antacid preparation. Eur J Clin Nutr. 1994;48(1):71-3.
- Gruenwald, J., Graubaum, H. J., Busch, R., and Bentley, C. Safety and tolerance of ester-C compared with regular ascorbic acid. Adv.Ther. 2006;23(1):171-178.
- Rahimi, R., Nikfar, S., Rezaie, A., and Abdollahi, M. A meta-analysis on the efficacy and safety of combined vitamin C and E supplementation in preeclamptic women. Hypertens.Pregnancy. 2009;28(4):417-434. PubMed
- Einerson, B., Nathorn, C., Kitiyakara, C., Sirada, M., and Thamlikitkul, V. The efficacy of ascorbic acid in suboptimal responsive anemic hemodialysis patients receiving erythropoietin: a meta-analysis. J Med.Assoc.Thai. 2011;94 Suppl 1:S134-S146.
- Li, G., Li, L., Yu, C., and Chen, L. Effect of vitamins C and E supplementation on Helicobacter pylori eradication: a meta-analysis. Br.J Nutr 2011;106(11):1632-1637.
- Chen X, Shen L, Gu X, et al. High-dose supplementation with vitamin C--induced pediatric urolithiasis: the first case report in a child and literature review. Urology. 2014;84(4):922-4. PubMed
- Sattar A, Willman JE, Kolluri R. Possible warfarin resistance due to interaction with ascorbic acid: case report and literature review. Am J Health Syst Pharm. 2013;70(9):782-6. PubMed
- Yaich S, Chaabouni Y, Charfeddine K, et al. Secondary oxalosis due to excess vitamin C intake: a cause of graft loss in a renal transplant recipient. Saudi J Kidney Dis Transpl. 2014;25(1):113-6. PubMed
- Jalloh MA, Gregory PJ, Hein D, et al. Dietary supplement interactions with antiretrovirals: a systematic review. Int J STD AIDS. 2017 Jan;28(1):4-15. PubMed
- Rumbold A, Ota E, Nagata C, Shahrook S, Crowther CA. Vitamin C supplementation in pregnancy. Cochrane Database Syst Rev. 2015;(9):CD004072. PubMed
- Seo MS, Kim JK, Shim JY. High-dose vitamin C promotes regression of multiple pulmonary metastases originating from hepatocellular carcinoma. Yonsei Med J. 2015;56(5):1449-52. PubMed
- Skelin M, Lucijanic T, Amidzic Klaric D, et al. Factors Affecting Gastrointestinal Absorption of Levothyroxine: A Review. Clin Ther. 2017 Feb;39(2):378-403. PubMed
- Jiang K, Tang K, Liu H, Xu H, Ye Z, Chen Z. Ascorbic acid supplements and kidney stones incidence among men and women: a systematic review and meta-analysis. Urol J. 2019;16(2):115-120.
- Thomas S, Patel D, Bittel B, et al. Effect of High-Dose Zinc and Ascorbic Acid Supplementation vs Usual Care on Symptom Length and Reduction Among Ambulatory Patients With SARS-CoV-2 Infection: The COVID A to Z Randomized Clinical Trial. JAMA Netw Open. 2 PubMed
- Giffen MA, McLemore JL. Hyperoxalosis Secondary to Intravenous Vitamin C Administration as a Non-Allopathic Treatment for Cancer. Acad Forensic Pathol 2019;9(1-2):118-126. PubMed
- Maike A, Sturgill D, Gallan A. Oxalate Nephropathy in a Renal Transplant Recipient After Receiving High Dose Ascorbic Acid. Am J Med Sci 2021. PubMed
- Shen ZY, Chen YR, Wang MC, Chang SS. High-dose vitamin C-induced acute oxalate nephropathy in a renal transplant recipient: a case report and literature review. Asian J Surg 2022. PubMed
- Yanase F, Spano S, Maeda A, et al. Mega-dose sodium ascorbate: a pilot, single-dose, physiological effect, double-blind, randomized, controlled trial. Crit Care 2023;27(1):371. PubMed
- Sharma Y, Sumanadasa S, Shahi R, et al. Efficacy and safety of vitamin C supplementation in the treatment of community-acquired pneumonia: a systematic review and meta-analysis with trial sequential analysis. Sci Rep 2024;14(1):11846. PubMed
- Pejcic AV, Petrovic NZ, Djordjic MD, Milosavljevic MN. Vitamin C Levels in Pregnant Women and the Efficacy of Vitamin C Supplements in Preventing Premature Rupture of Membranes: A Systematic Review and Meta-Analysis. Balkan Med J 2024;41(4):248-260. PubMed
Hesperidin 14 references
- Fernandez, S. P., Wasowski, C., Paladini, A. C., and Marder, M. Synergistic interaction between hesperidin, a natural flavonoid, and diazepam. Eur.J.Pharmacol. 4-11-2005;512(2-3):189-198. PubMed
- Jin, Y. R., Han, X. H., Zhang, Y. H., Lee, J. J., Lim, Y., Chung, J. H., and Yun, Y. P. Antiplatelet activity of hesperetin, a bioflavonoid, is mainly mediated by inhibition of PLC-gamma2 phosphorylation and cyclooxygenase-1 activity. Atherosclerosis 200
- Loscalzo, L. M., Wasowski, C., Paladini, A. C., and Marder, M. Opioid receptors are involved in the sedative and antinociceptive effects of hesperidin as well as in its potentiation with benzodiazepines. Eur.J.Pharmacol. 2-12-2008;580(3):306-313. PubMed
- Yamamoto, M., Suzuki, A., Jokura, H., Yamamoto, N., and Hase, T. Glucosyl hesperidin prevents endothelial dysfunction and oxidative stress in spontaneously hypertensive rats. Nutrition 2008;24(5):470-476. PubMed
- El-Readi, M. Z., Hamdan, D., Farrag, N., El-Shazly, A., and Wink, M. Inhibition of P-glycoprotein activity by limonin and other secondary metabolites from Citrus species in human colon and leukaemia cell lines. Eur.J.Pharmacol. 1-25-2010;626(2-3):139-145 PubMed
- Buckshee, K., Takkar, D., and Aggarwal, N. Micronized flavonoid therapy in internal hemorrhoids of pregnancy. Int J Gynaecol Obstet 1997;57(2):145-151. PubMed
- Uesawa, Y. and Mohri, K. Hesperidin in orange juice reduces the absorption of celiprolol in rats. Biopharm Drug Dispos. 2008;29(3):185-188. PubMed
- Cho, YA, Choi, DH, and Choi, JS. Effect of hesperidin on the oral pharmacokinetics of diltiazem and its main metabolite, desacetyldiltiazem, in rats. J Pharm Pharmacol. 2009;61(6):825-829. PubMed
- Piao, YJ and Choi, JS. Enhanced bioavailability of verapamil after oral administration with hesperidin in rats. Arch Pharm Res. 2008;31(4):518-522. PubMed
- Andersen KE. Hesperidin methyl chalcone?-?a new cosmetic contact allergen. Contact Dermatitis. 2015;72(6):402-4. PubMed
- Morand C, Dubray C, Milenkovic D, et al. Hesperidin contributes to the vascular protective effects of orange juice: a randomized crossover study in healthy volunteers. Am J Clin Nutr 2011;93(1):73-80. PubMed
- Homayouni F, Haidari F, Hedayati M, Zakerkish M, Ahmadi K. Blood pressure lowering and anti-inflammatory effects of hesperidin in type 2 diabetes; a randomized double-blind controlled clinical trial. Phytother Res. 2018;32(6):1073-1079. PubMed
- Mohammadi M, Ramezani-Jolfaie N, Lorzadeh E, Khoshbakht Y, Salehi-Abargouei A. Hesperidin, a major flavonoid in orange juice, might not affect lipid profile and blood pressure: A systematic review and meta-analysis of randomized controlled clinical trials PubMed
- Valls RM, Pedret A, Calderón-Pérez L, et al. Effects of hesperidin in orange juice on blood and pulse pressures in mildly hypertensive individuals: a randomized controlled trial (Citrus study). Eur J Nutr. 2021;60(3):1277-1288. PubMed
Horse Chestnut 21 references
- Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
- Ellenhorn MJ, et al. Ellenhorn's Medical Toxicology: Diagnoses and Treatment of Human Poisoning. 2nd ed. Baltimore, MD: Williams & Wilkins, 1997.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
- Greeske K, Pohlmann BK. Horse chestnut seed extract-an effective therapy principle in general practice. Drug therapy of chronic venous insufficiency. Fortschr Med 1996;114:196-200.
- Robbers JE, Tyler VE. Tyler's Herbs of Choice: The Therapeutic Use of Phytomedicinals. New York, NY: The Haworth Herbal Press, 1999.
- Takegoshi K, Tohyama T, Okuda K, et al. A case of Venoplant-induced hepatic injury. Gastroenterol Jpn 1986;21:62-5.
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