Licorice 900 mg Ingredients & Drug Interactions
by Solaray
What is this page for?
First and foremost: checking Licorice 900 mg 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
Licorice 900 mg is a dietary supplement by Solaray with 2 active ingredients. Its ingredients are commonly taken for replacing fluids and electrolytes, preventing dehydration during exercise or illness, treating low blood sodium (under medical care).Based on those ingredients, 1,049 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Licorice, Sodium. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Licorice 900 mg by Solaray
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HelloPharmacist Scorecard of Licorice 900 mg by Solaray
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
This product contains 2 active ingredients: licorice (the main herbal component) and sodium (a mineral). Licorice is the root of the plant Glycyrrhiza glabra, traditionally used in herbal medicine, while sodium is an essential electrolyte that's already present in your diet.
The capsule also contains cellulose, an inactive filler.
Does it work?
Strong evidence
The evidence for licorice in this product is limited. It's considered possibly effective for canker sores and atopic dermatitis (eczema), but there isn't enough reliable evidence to rate it for asthma or Addison disease.
Sodium itself is likely effective for cystic fibrosis and possibly effective for kidney toxicity caused by the medication amphotericin B—but these are specialized medical uses, not reasons someone would typically buy this supplement.
How safe is it?
Well-documented data
Licorice is generally well tolerated in small food amounts, but the active compound glycyrrhizin can cause serious problems at high doses or with long-term use—the most common side effects are headache, nausea, and vomiting, though rare serious effects on blood pressure, potassium loss, and heart rhythm are possible. Sodium is essential in small amounts, but excess intake is linked to high blood pressure and heart strain.
Avoid licorice supplements during pregnancy, as glycyrrhizin has been linked to harmful effects; there isn't enough reliable safety data to recommend it while breastfeeding either. Sodium intake during pregnancy and lactation depends on individual medical circumstances—talk with your doctor.
Meds to double-check
Moderate interaction found
Before taking this product, check with your pharmacist if you're on warfarin or another blood thinner, digoxin or other heart medications, blood pressure drugs (antihypertensives), loop diuretics (water pills), lithium, corticosteroids, cancer medications (cisplatin or paclitaxel), sedatives like midazolam, or any medication broken down by your liver's CYP2B6 or CYP2C19 systems. All interactions listed are Moderate severity.
The bottom line
Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
This product combines licorice and sodium, both of which carry real risks with medications. If you take a blood thinner, heart medication, blood pressure drug, or lithium—or anything metabolized by your liver—you need to check your medications before using this.
Talk with your pharmacist or doctor about whether this product makes sense for you.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 23, 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 Licorice 900 mg, straight from the product label.
| Brand | Solaray |
|---|---|
| Barcode (UPC) | 076280193701 |
| Net contents | 100 VegCap(s) |
| Market status | On market |
| Date entered into DSLD | Jan 23, 2025 |
| DSLD ID | 326033 |
| Product type | Botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, Adult (18 - 50 Years), Women (not pregnant or lactating), Dairy 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 Licorice 900 mg by Solaray, sourced from the NIH Dietary Supplement Label Database.
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.
Brand IP Statement(s)
Solaray Est. 1973
Formula
Licorice 900 mg per serving
Formulation
Digestive Support
Non GMO Project Verified nongmoproject.org
Vegan
FDA Statement of Identity
Dietary Supplement
Seals/Symbols
Non GMO Project Verified nongmoproject.org Lab Verified Vegan
Precautions
Warning: Do not use if safety seal is broken or missing. Not for prolonged use in high doses except under the supervision of a qualified healthcare practitioner. Not for use in persons with hypertension, liver disorders, severe kidney insufficiency, low blood potassium, heart disease with edema or congestive heart failure.
Keep out of reach of children.
Keep your licensed health care practitioner informed when using this product, especially if you are taking a prescription medication. Do not use if you are pregnant or nursing.
Suggested/Recommended/Usage/Directions
Directions: Use only as directed. Take 2 VegCaps daily with a meal or glass of water.
Storage
Store in a cool, dry place.
FDA Disclaimer Statement
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
General Statements
100% PCR BOTTLES
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Licorice 900 mg by Solaray 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 Licorice 900 mg by Solaray
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 VegCap(s) Dosage formCapsule Servings per container50 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.
Sodium
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 monograph & interactionsLicorice
Interacts with1,040 drugs
Licorice root is a traditional remedy used for sore throats, coughs, and digestive complaints, but solid human evidence is limited for most uses. Regu...
Licorice monograph & interactionsOther (inactive) ingredients: Cellulose. These complete the product’s ingredient list but are not active constituents.
Licorice 900 mg by Solaray Drug Interactions
HelloPharmacist Interaction Report
Solaray Licorice 900 mg contains two active ingredients—licorice and sodium—and together they interact with a substantial number of medications.
The most serious concern is licorice's effect on warfarin (Coumadin), a blood thinner: licorice appears to speed up how your body breaks down warfarin, which could reduce its ability to prevent clots.
Read the full breakdown — every affected drug type, severity by severity
Licorice also interacts with several other drug types at Moderate severity. It may reduce the effectiveness of certain cancer medications (cisplatin and paclitaxel), increase levels of drugs broken down by your liver's CYP2B6 and CYP2C19 enzymes (a broad category that includes many common prescriptions), lower levels of the sedative midazolam, and enhance the heart-related effects of loop diuretics (water pills that also affect potassium).
It may also increase the risk of heart toxicity with digoxin, a heart medication.
Sodium—present in this product—can reduce the effectiveness of blood pressure medications (antihypertensives), raise the risk of high sodium levels in your blood (hypernatremia) if you're taking corticosteroids, certain HIV medications like didanosine, sodium phosphate products, or tolvaptan, and it significantly alters lithium levels, potentially causing lithium toxicity. Altogether, these interactions span 1,033 individual medications.
Check your exact medications with the search tool on this page before starting this product.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Licorice 900 mg?
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 Licorice 900 mg interact with 1,049 drugs. Click any drug to see the details.
2 of the 2 ingredients in Licorice 900 mg interact with drugs. Each result below shows which ingredient is responsible. Licorice Sodium
Acetaminophen, Dextromethorphan, Doxylamine, PseudoephedrineVicks NyQuil
How Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Licorice + Acetaminophen, Dextromethorphan, Doxylamine, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylephrineConar-A
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylephrine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PhenylpropanolamineAnatuss
How Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Licorice + Acetaminophen, Dextromethorphan, Guaifenesin, Phenylpropanolamine interactionAcetaminophen, Dextromethorphan, Guaifenesin, PseudoephedrineRobitussin Cold, Severe Cold, Suphedrine Cold/Cough
How Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Licorice + Acetaminophen, Dextromethorphan, Guaifenesin, Pseudoephedrine interactionAcetaminophen, Dextromethorphan, Phenylpropanolamine, PyrilamineTheracaps
How Acetaminophen, Dextromethorphan, Phenylpropanolamine, Pyrilamine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Licorice + 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 Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Acetaminophen, Dextromethorphan, Pseudoephedrine interactionAcetaminophen, HydrocodoneAnexsia, Anodynos DHC, Azdone, Co-Gesic, Doucet, Lorcet +9 more
How Acetaminophen, Hydrocodone interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Licorice + Acetaminophen, Hydrocodone interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2c9 (cyp2c9) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP2C9.
Read the full Licorice + Acetaminophen, Ibuprofen interactionAcetaminophen, OrphenadrineOrfenagesic
How Acetaminophen, Orphenadrine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2b6 (cyp2b6) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase levels of drugs metabolized by CYP2B6.
Read the full Licorice + Acetaminophen, Orphenadrine interactionAcetaminophen, Pamabrom, PyrilamineMidol Max Strength PMS, Pamprin, Pamprin ES
How Acetaminophen, Pamabrom, Pyrilamine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 1a2 (cyp1a2) Substrates, Diuretic Drugs Moderate
Interaction Summary
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Licorice + Acetaminophen, Pamabrom, Pyrilamine interactionAcetaminophen, Phenylephrine, ChlorpheniramineSuper Cold Tabs
How Acetaminophen, Phenylephrine, Chlorpheniramine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Licorice + Acetaminophen, Phenylephrine, Chlorpheniramine interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with Licorice 900 mg — through 2 ingredients. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Acetazolamide interactionLicoriceDiuretic Drugs, Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, concomitant use of licorice with diuretic drugs might increase the risk of hypokalemia.
Read the full Licorice + Acetazolamide interactionAdagrasibKrazati
How Adagrasib interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Adagrasib interactionAerosphere Budesonide, Formoterol Fumarate, GlycopyrrolateBreztri
How Aerosphere Budesonide, Formoterol Fumarate, Glycopyrrolate interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2c19 (cyp2c19) Substrates, Cytochrome P450 2c9 (cyp2c9) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase levels of drugs metabolized by CYP2C19.
Read the full Licorice + Aerosphere Budesonide, Formoterol Fumarate, Glycopyrrolate interactionAfatinib DimaleateGilotrif
How Afatinib Dimaleate interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceP-glycoprotein Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the absorption of P-glycoprotein substrates.
Read the full Licorice + Afatinib Dimaleate interactionAgomelatineValdoxan
How Agomelatine interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2c19 (cyp2c19) Substrates, Cytochrome P450 2c9 (cyp2c9) Substrates +1 Moderate
Interaction Summary
Theoretically, licorice might increase levels of drugs metabolized by CYP2C19.
Read the full Licorice + Agomelatine interactionAlfentanilAlfenta
How Alfentanil interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Alfentanil interactionAlfuzosinUroxatral
How Alfuzosin interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Alfuzosin interactionAliskirenTekturna
How Aliskiren interacts with Licorice 900 mg — through 2 ingredients. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates, Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Aliskiren interactionSodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Aliskiren interactionAlmotriptanAlmogran, Axert
How Almotriptan interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Almotriptan interactionAlogliptinNesina
How Alogliptin interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2c8 (cyp2c8) Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase levels of drugs metabolized by CYP2C8.
Read the full Licorice + Alogliptin interactionAlogliptin, PioglitazoneOseni
How Alogliptin, Pioglitazone interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2c8 (cyp2c8) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Alogliptin, Pioglitazone interactionAlpelisibPiqray
How Alpelisib interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Alpelisib interactionAlprazolamNiravam, Xanax
How Alprazolam interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Alprazolam interactionAlvimopanEntereg
How Alvimopan interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceP-glycoprotein Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the absorption of P-glycoprotein substrates.
Read the full Licorice + Alvimopan interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with Licorice 900 mg — through 2 ingredients. Tap an ingredient for the detail:
LicoriceP-glycoprotein Substrates, Antihypertensive Drugs +1 Moderate
Interaction Summary
Theoretically, licorice might decrease the absorption of P-glycoprotein substrates.
Read the full Licorice + Ambrisentan interactionSodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Ambrisentan interactionAmilorideAmilamont, Midamor
How Amiloride interacts with Licorice 900 mg — through 2 ingredients. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amiloride interactionLicoriceAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, licorice might reduce the effects of antihypertensive drugs.
Read the full Licorice + Amiloride interactionAmiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
How Amiloride, Hydrochlorothiazide interacts with Licorice 900 mg — through 2 ingredients. Tap an ingredient for the detail:
LicoriceAntihypertensive Drugs, Diuretic Drugs Moderate
Interaction Summary
Theoretically, licorice might reduce the effects of antihypertensive drugs.
Read the full Licorice + Amiloride, Hydrochlorothiazide interactionSodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amiloride, Hydrochlorothiazide interactionAmiodaroneCordarone, Pacerone
How Amiodarone interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2c8 (cyp2c8) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Amiodarone interactionAmitriptylineElavil
How Amitriptyline interacts with Licorice 900 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2c19 (cyp2c19) Substrates, Cytochrome P450 1a2 (cyp1a2) Substrates +2 Moderate
Interaction Summary
Theoretically, licorice might increase levels of drugs metabolized by CYP2C19.
Read the full Licorice + Amitriptyline interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Licorice 900 mg 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.
Licorice
Antihypertensive Drugs
Theoretically, licorice might reduce the effects of antihypertensive drugs.
In human research, licorice increases blood pressure in a dose-dependent manner.
Cisplatin (Platinol-Aq)
Theoretically, licorice might reduce the effects of cisplatin.
In animal research, licorice diminished the therapeutic efficacy of cisplatin.
Corticosteroids
Theoretically, concomitant use of licorice and corticosteroids might increase the side effects of corticosteroids.
Case reports suggest that concomitant use of licorice and oral corticosteroids, such as hydrocortisone, can potentiate the duration of activity and increase blood levels of corticosteroids. Additionally, in one case report, a patient with neurogenic orthostatic hypertension stabilized on fludrocortisone 0.1 mg twice daily developed pseudohyperaldosteronism after recent consumption of large amounts of black licorice.
Cytochrome P450 2B6 (Cyp2B6) Substrates
Theoretically, licorice might increase levels of drugs metabolized by CYP2B6.
In vitro research shows that licorice extract and glabridin, a licorice constituent, inhibit CYP2B6 isoenzymes. Licorice extract from the species G. uralensis seems to inhibit CYP2B6 isoenzymes to a greater degree than G. glabra extract in vitro. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2B6; however, these interactions have not yet been reported in humans.
Cytochrome P450 2C19 (Cyp2C19) Substrates
Theoretically, licorice might increase levels of drugs metabolized by CYP2C19.
In vitro, licorice extracts from the species G. glabra and G. uralensis inhibit CYP2C19 isoenzymes in vitro. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2C19; however, this interaction has not yet been reported in humans.
Cytochrome P450 2C8 (Cyp2C8) Substrates
Theoretically, licorice might increase levels of drugs metabolized by CYP2C8.
In vitro, licorice extract from the species G. glabra and G. uralensis inhibits CYP2C8 isoenzymes. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2C8; however, this interaction has not yet been reported in humans.
Cytochrome P450 2C9 (Cyp2C9) Substrates
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP2C9.
There is conflicting evidence about the effect of licorice on CYP2C9 enzyme activity. In vitro research shows that extracts from the licorice species G. glabra and G. uralensis moderately inhibit CYP2C9 isoenzymes. However, evidence from an animal model shows that licorice extract from the species G. uralensis can induce hepatic CYP2C9 activity. Until more is known, licorice should be used cautiously in people taking CYP2C9 substrates.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Pharmacokinetic research shows that the licorice constituent glycyrrhizin, taken in a dosage of 150 mg orally twice daily for 14 days, modestly decreases the area under the concentration-time curve of midazolam by about 20%. Midazolam is a substrate of CYP3A4, suggesting that glycyrrhizin modestly induces CYP3A4 activity. Animal research also shows that licorice extract from the species G. uralensis induces CYP3A4 activity. However, licorice extract from G. glabra species appear to inhibit CYP3A4-induced metabolism of testosterone in vitro. It is thought that the G. glabra inhibits CYP3A4 due to its constituent glabridin, which is a moderate CYP3A4 inhibitor in vitro and not present in other licorice species. Until more is known, licorice should be used cautiously in people taking CYP3A4 substrates.
Digoxin (Lanoxin)
Theoretically, concomitant use of licorice with digoxin might increase the risk of cardiac toxicity.
Overuse or misuse of licorice with cardiac glycoside therapy might increase the risk of cardiac toxicity due to potassium loss.
Diuretic Drugs
Theoretically, concomitant use of licorice with diuretic drugs might increase the risk of hypokalemia.
Overuse of licorice might compound diuretic-induced potassium loss. In one case report, a 72-year-old male with a past medical history of hypertension, type 2 diabetes, hyperlipidemia, arrhythmia, stroke, and hepatic dysfunction was hospitalized with severe hypokalemia and uncontrolled hypertension due to pseudohyperaldosteronism. This was thought to be provoked by concomitant daily consumption of a product containing 225 mg of glycyrrhizin, a constituent of licorice, and hydrochlorothiazide 12.5 mg for 1 month.
Estrogens
Theoretically, licorice might increase or decrease the effects of estrogen therapy.
Theoretically, licorice might interfere with estrogen therapy due to estrogenic and anti-estrogenic effects.
Loop Diuretics
Theoretically, loop diuretics might increase the mineralocorticoid effects of licorice.
Theoretically, loop diuretics might enhance the mineralocorticoid effects of licorice by inhibiting the enzyme that converts cortisol to cortisone; however, bumetanide (Bumex) does not appear to have this effect.
Midazolam (Versed)
Theoretically, licorice might decrease levels of midazolam.
In humans, the licorice constituent glycyrrhizin appears to moderately induce the metabolism of midazolam. This is likely due to induction of cytochrome P450 3A4 by licorice. Until more is known, licorice should be used cautiously in people taking midazolam.
P-Glycoprotein Substrates
Theoretically, licorice might decrease the absorption of P-glycoprotein substrates.
In vitro research shows that licorice can increase P-glycoprotein activity.
Paclitaxel (Abraxane, Onxol)
Theoretically, licorice might decrease plasma levels and clinical effects of paclitaxel.
Multiple doses of licorice taken concomitantly with paclitaxel might reduce the effectiveness of paclitaxel. Animal research shows that licorice 3 grams/kg given orally for 14 days before intravenous administration of paclitaxel decreases the exposure to paclitaxel and increases its clearance. Theoretically, this occurs because licorice induces cytochrome P450 3A4 enzymes, which metabolize paclitaxel. Notably, a single dose of licorice did not affect exposure or clearance of paclitaxel.
Warfarin (Coumadin)
Theoretically, licorice might decrease plasma levels and clinical effects of warfarin.
Licorice seems to increase metabolism and decrease levels of warfarin in animal models. This is likely due to induction of cytochrome P450 2C9 (CYP2C9) metabolism by licorice. Advise patients taking warfarin to avoid taking licorice.
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that licorice induces CYP1A2 enzymes.
Methotrexate (Trexall, Others)
Theoretically, licorice might increase levels of methotrexate.
Animal research suggests that intravenous administration of glycyrrhizin, a licorice constituent, and high-dose methotrexate may delay methotrexate excretion and increase systemic exposure, leading to transient elevations in liver enzymes and total bilirubin. This interaction has not yet been reported in humans.
Sodium
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.
Brand information
Manufacturer and brand details for Licorice 900 mg, from the product label.
Licorice 900 mg by Solaray: 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 Licorice 900 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sodium
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 monographLicorice
Interacts with 1,040 drugsLicorice root is a traditional remedy used for sore throats, coughs, and digestive complaints, but solid human evidence is limited for most uses. Regular licorice contains glycyrrhizin, whic...
Read the full Licorice monograph →Sources & How We Checked
Licorice 900 mg'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 130 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.
Sodium 38 references
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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