Licorice 450 mg Ingredients & Drug Interactions
by Solaray
What is this page for?
First and foremost: checking Licorice 450 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 450 mg is a dietary supplement by Solaray with 1 active ingredient. Its ingredients are commonly taken for sore throat and cough, heartburn and stomach upset, mouth ulcers and digestive complaints.Based on those ingredients, 1,040 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Licorice. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Licorice 450 mg by Solaray
Ask about any prescription or over-the-counter medication and we check it for interactions with Licorice 450 mg by Solaray — 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 Licorice 450 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 has one active ingredient: licorice root at 450 mg per capsule. Licorice contains compounds like glycyrrhizin that give it its effects on skin, digestion, and other systems.
The capsule also contains inactive ingredients (cellulose and rice extract blend) for structure and absorption.
Does it work?
Moderate evidence
Licorice shows possibly effective evidence for two uses: atopic dermatitis (eczema) and canker sores. For Addison disease and asthma, the evidence we hold is insufficient to rate whether it works.
How safe is it?
Well-documented data
Licorice is generally well tolerated in small amounts, like what you'd get from licorice candy or flavoring. But glycyrrhizin, its main active compound, can cause serious problems at high doses or with long-term use.
The most common side effects when taken orally are headache, nausea, and vomiting. Licorice is not recommended in pregnancy—glycyrrhizin has been linked to harmful effects on the fetus.
There isn't enough reliable safety data to recommend it while breastfeeding either. If you're pregnant, planning pregnancy, or nursing, talk with your doctor or pharmacist before using this supplement.
Meds to double-check
Moderate interaction found
Before taking this product, check if you use digoxin (a heart medication), warfarin or other blood thinners, cancer drugs like cisplatin or paclitaxel, loop diuretics (water pills), sedatives like midazolam, or any drug that relies on your liver's CYP2B6 or CYP2C19 enzymes to work. These moderate interactions can reduce drug effectiveness or raise toxicity risk.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
Licorice may help with eczema or canker sores, but it's not a first-line choice if you take heart medications, blood thinners, or cancer drugs. Check your exact medications with the tool on this page before you start.
Pregnant or nursing? Skip it and talk to your pharmacist about alternatives.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Sep 25, 2025.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Licorice 450 mg, straight from the product label.
| Brand | Solaray |
|---|---|
| Barcode (UPC) | 076280013702 |
| Net contents | 100 VegCap(s) |
| Market status | On market |
| Date entered into DSLD | Sep 25, 2025 |
| DSLD ID | 339017 |
| 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 450 mg by Solaray, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Licorice | 450 mg | -- |
Other ingredients: Cellulose, Rice extract Blend
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 A Brighter Way 1973
General Statements
True herbs
Since 1973, we've scoured the globe for the highest quality ingredients, connecting you with the most efficacious supplements that help you live brighter & embrace the moments that matter most.
100% PCR bottles
Formulation
Herbal 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.
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.
Suggested/Recommended/Usage/Directions
Directions: Use only as directed. Take 1 VegCap daily with a meal or glass of water.
Storage
Store in a cool, dry place.
Formula
Discussion: Licorice root is one of the most widely used medicinal plants around the world with a history of use dating back over 3,000 years. Licorice is so important to traditional Chinese medicine that it is used in about one third of all their herbal formulas. Licorice root has been clinically studied for a wide variety of applications.
FDA Disclaimer Statement
These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure or prevent any disease.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Licorice 450 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 450 mg by Solaray
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 VegCap(s) Dosage formCapsule Servings per container100 Amounts shown are per serving.
Licorice
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, Rice extract Blend. These complete the product’s ingredient list but are not active constituents.
Licorice 450 mg by Solaray Drug Interactions
HelloPharmacist Interaction Report
Solaray Licorice 450 mg contains one active ingredient—licorice root—that interacts with a number of medications.
The most serious concern is digoxin (Lanoxin), a heart medication: licorice may increase the risk of heart toxicity, especially if you're losing potassium or overusing the supplement.
Read the full breakdown — every affected drug type, severity by severity
Licorice also has moderate interactions with blood thinners like warfarin (Coumadin)—it may reduce how well the drug works and increase clotting risk. It can raise levels of drugs broken down by your liver's CYP2B6 and CYP2C19 enzymes, and it may lower levels of certain cancer drugs (cisplatin, paclitaxel) and the sedative midazolam (Versed).
Loop diuretics (water pills) may have their effects amplified by licorice's mineral-balancing properties.
Altogether, these interactions span 1,024 individual medications. If you take any prescription medication—especially heart drugs, blood thinners, or cancer treatments—run it through the checker on this page before starting licorice.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Licorice 450 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 450 mg interact with 1,040 drugs. Click any drug to see the details.
1 of the 1 ingredient in Licorice 450 mg interact with drugs. Each result below shows which ingredient is responsible. Licorice
Amitriptyline, ChlordiazepoxideLimbitrol DS
How Amitriptyline, Chlordiazepoxide interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 1a2 (cyp1a2) Substrates, Cytochrome P450 2c19 (cyp2c19) Substrates +2 Moderate
Interaction Summary
Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
Read the full Licorice + Amitriptyline, Chlordiazepoxide interactionAmitriptyline, PerphenazineEtrafon, Etrafon-A, Etrafon-Forte, Triavil
How Amitriptyline, Perphenazine interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2c9 (cyp2c9) Substrates, Cytochrome P450 2c19 (cyp2c19) Substrates +2 Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP2C9.
Read the full Licorice + Amitriptyline, Perphenazine interactionAmlodipineNorliqva
How Amlodipine interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceAntihypertensive Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might reduce the effects of antihypertensive drugs.
Read the full Licorice + Amlodipine interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceAntihypertensive Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might reduce the effects of antihypertensive drugs.
Read the full Licorice + Amlodipine Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with Licorice 450 mg — through 1 ingredient. 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 + Amlodipine Besilate interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceAntihypertensive Drugs, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might reduce the effects of antihypertensive drugs.
Read the full Licorice + Amlodipine Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with Licorice 450 mg — through 1 ingredient. 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 + Amlodipine Besylate, Benazepril interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceAntihypertensive Drugs, Cytochrome P450 2c9 (cyp2c9) Substrates +1 Moderate
Interaction Summary
Theoretically, licorice might reduce the effects of antihypertensive drugs.
Read the full Licorice + Amlodipine, Celecoxib interactionAmmonium ChlorideAmmonium Chloride
How Ammonium Chloride interacts with Licorice 450 mg — through 1 ingredient. 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 + Ammonium Chloride interactionAmobarbital, SecobarbitalTuinal
How Amobarbital, Secobarbital interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2b6 (cyp2b6) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase levels of drugs metabolized by CYP2B6.
Read the full Licorice + Amobarbital, Secobarbital interactionAmoxicillin, Omeprazole Magnesium, RifabutinTalicia
How Amoxicillin, Omeprazole Magnesium, Rifabutin interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates, Cytochrome P450 2c19 (cyp2c19) Substrates +1 Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Amoxicillin, Omeprazole Magnesium, Rifabutin interactionAmphotericin, TetracyclineMysteclin-F
How Amphotericin, Tetracycline interacts with Licorice 450 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 + Amphotericin, Tetracycline interactionAmprenavirAgenerase
How Amprenavir interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceP-glycoprotein Substrates, Cytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, licorice might decrease the absorption of P-glycoprotein substrates.
Read the full Licorice + Amprenavir interactionAntidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) InhibitorGlyxambi
How Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interacts with Licorice 450 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 + Antidiabetes, Dipeptidyl Peptidase-4 (dpp-iv) Inhibitor interactionApalutamideErleada
How Apalutamide interacts with Licorice 450 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 + Apalutamide interactionApixabanEliquis
How Apixaban interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates, P-glycoprotein Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Apixaban interactionApomorphineAPO-go, APO-go Pen, APO-go PFS, Apokyn, Uprima
How Apomorphine interacts with Licorice 450 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 + Apomorphine interactionApomorphine HydrochlorideKynmobi
How Apomorphine Hydrochloride interacts with Licorice 450 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 + Apomorphine Hydrochloride interactionApremilastOtezla
How Apremilast interacts with Licorice 450 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 + Apremilast interactionAprepitantCinvanti, Emend
How Aprepitant interacts with Licorice 450 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 + Aprepitant interactionAprobarbital, Butabarbital, PhenobarbitalTriple Barbital
How Aprobarbital, Butabarbital, Phenobarbital interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 2b6 (cyp2b6) Substrates Moderate
Interaction Summary
Theoretically, licorice might increase levels of drugs metabolized by CYP2B6.
Read the full Licorice + Aprobarbital, Butabarbital, Phenobarbital interactionAprocitentanTryvio
How Aprocitentan interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, licorice might reduce the effects of antihypertensive drugs.
Read the full Licorice + Aprocitentan interactionAripiprazoleAbilify, Abilify Maintena, Abilify Mycite
How Aripiprazole interacts with Licorice 450 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 + Aripiprazole interactionAripiprazole LauroxilAristada, Aristada Initio Kit
How Aripiprazole Lauroxil interacts with Licorice 450 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 + Aripiprazole Lauroxil interactionArmodafinilNuvigil
How Armodafinil interacts with Licorice 450 mg — through 1 ingredient. Tap an ingredient for the detail:
LicoriceCytochrome P450 3a4 (cyp3a4) Substrates, P-glycoprotein Substrates Moderate
Interaction Summary
Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Read the full Licorice + Armodafinil interactionAspirin, Butalbital, CaffeineFiorinal
How Aspirin, Butalbital, Caffeine interacts with Licorice 450 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 + Aspirin, Butalbital, Caffeine interactionAspirin, Butalbital, Caffeine, Codeine PhosphateFiorinal w/ Codeine
How Aspirin, Butalbital, Caffeine, Codeine Phosphate interacts with Licorice 450 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 + Aspirin, Butalbital, Caffeine, Codeine Phosphate interactionAspirin, Butalbital, Caffeine, PhenacetinMarnal
How Aspirin, Butalbital, Caffeine, Phenacetin interacts with Licorice 450 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 + Aspirin, Butalbital, Caffeine, Phenacetin interactionAspirin, CaffeineAnacin
How Aspirin, Caffeine interacts with Licorice 450 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 + Aspirin, Caffeine interactionAspirin, Caffeine, Codeine PhosphateAnacin w/ Codeine
How Aspirin, Caffeine, Codeine Phosphate interacts with Licorice 450 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 + Aspirin, Caffeine, Codeine Phosphate interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Licorice 450 mg with known interactions, here are the types of medications it 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.
Brand information
Manufacturer and brand details for Licorice 450 mg, from the product label.
Solaray
See all Solaray products- Name
- Solaray
- City
- Salt Lake City
- State
- UT
- ZipCode
- 84101
- Phone Number
- 800-538-5888
- Web Address
- www.solaray.com
Licorice 450 mg by Solaray: Common Questions
Does Licorice 450 mg by Solaray interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
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What are the most common side effects?
Is this deglycyrrhizinated licorice, or does it contain glycyrrhizin?
Does licorice really help with eczema?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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The Full Monographs Behind Licorice 450 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Licorice 450 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 92 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.
Licorice 92 references
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- Armanini D, Lewicka S, Pratesi C, et al. Further studies on the mechanism of the mineralocorticoid action of licorice in humans. J Endocrinol Invest 1996;19:624-9. PubMed
- Zhang YD, Lorenzo B, Reidenberg MM. Inhibition of 11 beta hydroxysteroid dehydrogenase obtained from guinea pig kidney by furosemide, naringenin and some other compounds. J Steroid Biochem Mol Biol 1994;49:81-5.
- Strandberg TE, Jarvenpaa AL, Vanhanen H, McKeigue PM. Birth outcome in relation to licorice consumption during pregnancy. Am J Epidemiol 2001;153:1085-8. PubMed
- Sigurjonsdottir HA, Franzson L, Manhem K, et al. Liquorice-induced rise in blood pressure: a linear dose-response relationship. J Hum Hypertens 2001;15:549-52. PubMed
- Amato P, Christophe S, Mellon PL. Estrogenic activity of herbs commonly used as remedies for menopausal symptoms. Menopause 2002;9:145-50. PubMed
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- Yoshida S, Takayama Y. Licorice-induced hypokalemia as a treatable cause of dropped head syndrome. Clin Neurol Neurosurg 2003;105:286-7.. PubMed
- Strandberg TE, Andersson S, Jarvenpaa AL, et al. Preterm birth and licorice consumption during pregnancy. Am J Epidemiol 2002;156:803-5.. PubMed
- Hussain RM. The sweet cake that reaches parts other cakes can't! Postgrad Med J 2003;79:115-6.. PubMed
- Morris DJ, Davis E, Latif SA. Licorice, tobacco chewing, and hypertension. N Engl J Med 1990;322:849-50. PubMed
- Quinkler M, Stewart PM. Hypertension and the cortisol-cortisone shuttle. J Clin Endocrinol Metab 2003;88:2384-92. PubMed
- Westman EC, Guthrie GP. Licorice, tobacco chewing, and hypertension. N Engl J Med 1990;322:850. PubMed
- Mu Y, Zhang J, Zhang S, et al. Traditional Chinese medicines Wu Wei Zi (Schisandra chinensis Baill) and Gan Cao (Glycyrrhiza uralensis Fisch) activate pregnane X receptor and increase warfarin clearance in rats. J Pharmacol Exp Ther 2006;316:1369-77. PubMed
- Yasue H, Itoh T, Mizuno Y, Harada E. Severe hypokalemia, rhabdomyolysis, muscle paralysis, and respiratory impairment in a hypertensive patient taking herbal medicines containing licorice. Intern Med 2007;46:575-8. PubMed
- Brayley J, Jones J. Life-threatening hypokalemia associated with excessive licorice ingestion (letter). Am J Psychiatry 1994;151:617-8. PubMed
- de Klerk GJ, Nieuwenhuis G, Beutler JJ. Hypokalaemia and hypertension associated with use of liquorice flavoured chewing gum. BMJ 1997;314:731-2.
- Dellow EL, Unwin RJ, Honour JW. Pontefract cakes can be bad for you: refractory hypertension and liquorice excess. Nephol Dial Transplant 1999;14:218-20. PubMed
- Elinav E, Chajek-Shaul T. Licorice consumption causing severe hypokalemic paralysis. Mayo Clin Proc 2003;78:767-8. PubMed
- Eriksson JW, Carlberg B, Hillom V. Life-threatening ventricular tachycardia due to liquorice-induced hypokalemia. J Intern Med 1999;245:307-10.
- Janse A, van Iersel M, Hoefnagels WH, Olde Rikker MG. The old lady who liked liquorice: hypertension due to chronic intoxication in a memory-impaired patient. Neth J Med 2005;63:149-50.
- Lin SH, Yang SS, Chau T, Halperin ML. An unusual cause of hypokalemic paralysis: chronic licorice ingestion. Am J Med Sci 2003;325:153-6. PubMed
- van den Bosch AE, van der Klooster JM, Zuidgeest DM, et al. Severe hypokalemic paralysis and rhabdomyolysis due to ingestion of liquorice. Neth J Med 2005;63:146-8.
- van Uum SH. Liquorice and hypertension. Neth J Med 2005;63:119-20.
- Russo S, Mastropasqua M, Mosetti MA, et al. Low doses of liquorice can induce hypertension encephalopathy. Am J Nephrol 2000;20:145-8. PubMed
- Stormer FC, Reistad R, Alexander J. Glycyrrhizic acid in liquorice - evaluation of health hazard. Food Chem Toxicol 1993;31:303-12. PubMed
- Sontia B, Mooney J, Gaudet L, Touyz RM. Pseudohyperaldosteronism, liquorice, and hypertension. J Clin Hypertens (Greenwich) 2008;10:153-7. PubMed
- Francini-Pesenti F, Puato M, Piccoli A, Brocadello F. Liquorice-induced hypokalaemia and water retention in the absence of hypertension. Phytother Res 2008;22:563-5. PubMed
- Lapi F, Gallo E, Bernasconi S, et al. Myopathies associated with red yeast rice and liquorice: spontaneous reports from the Italian Surveillance System of Natural Health Products. Br J Clin Pharmacol 2008;66:572-4. PubMed
- Chen MF, Shimada F, Kato H, Yano S, Kanaoka M. Effect of glycyrrhizin on the pharmacokinetics of prednisolone following low dosage of prednisolone hemisuccinate. Endocrinol Jpn 1990;37:331-41. PubMed
- Teelucksingh S, Mackie AD, Burt D, McIntyre MA, Brett L, Edwards CR. Potentiation of hydrocortisone activity in skin by glycyrrhetinic acid. Lancet 1990;335(8697):1060-3. PubMed
- Heidemann HT, Kreuzfelder E. Hypokalemic rhabdomyolysis with myoglobinuria due to licorice ingestion and diuretic treatment. Klin Wochenschr 1983;61:303-5. PubMed
- Hukkanen J, Ukkola O, Savolainen MJ. Effects of low-dose liquorice alone or in combination with hydrochlorothiazide on the plasma potassium in healthy volunteers. Blood Press 2009;18:192-5. PubMed
- Bisogni V, Rossi GP, Calò LA. Apparent mineralcorticoid excess syndrome, an often forgotten or unrecognized cause of hypokalemia and hypertension: case report and appraisal of the pathophysiology. Blood Press. 2014 Jun;23(3):189-92. PubMed
- Dehours E, Vallé B, Rougé-Bugat ME, Florent B, Bounes V, Franchitto N. Suspected hypokalaemia following liquorice ingestion on board ship. J Telemed Telecare. 2013 Jun;19(4):227-8. PubMed
- Kormann R, Languille E, Amiot HM, Hertig A. Dying for a cup of tea. BMJ Case Rep. 2012 Oct 19;2012. PubMed
- Panduranga P, Al-Rawahi N. Licorice-induced severe hypokalemia with recurrent torsade de pointes. Ann Noninvasive Electrocardiol. 2013 Nov;18(6):593-6. PubMed
- Räikkönen K, Seckl JR, Heinonen K, Pyhälä R, Feldt K, Jones A, Pesonen AK, Phillips DI, Lahti J, Järvenpää AL, Eriksson JG, Matthews KA, Strandberg TE, Kajantie E. Maternal prenatal licorice consumption alters hypothalamic-pituitary-adrenocortical axis fu
- Robles BJ, Sandoval AR, Dardon JD, Blas CA. Lethal liquorice lollies (liquorice abuse causing pseudohyperaldosteronism). BMJ Case Rep. 2013 Sep 19;2013. PubMed
- Chamberlain, J. J. and Abolnik, I. Z. Pulmonary edema following a licorice binge. West J Med 1997;167(3):184-185.
- Barrella, M., Lauria, G., Quatrale, R., and Paolino, E. Hypokaliemic rhabdomyolysis associated with liquorice ingestion: report of an atypical case. Ital.J Neurol.Sci 1997;18(4):217-220. PubMed
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- Hasegawa, J., Suyama, Y., Kinugawa, T., Morisawa, T., and Kishimoto, Y. Echocardiographic findings of the heart resembling dilated cardiomyopathy during hypokalemic myopathy due to licorice-induced pseudoaldosteronism. Cardiovasc.Drugs Ther 1998;12(6):59 PubMed
- van Rossum, T. G., Vulto, A. G., Hop, W. C., Brouwer, J. T., Niesters, H. G., and Schalm, S. W. Intravenous glycyrrhizin for the treatment of chronic hepatitis C: a double-blind, randomized, placebo-controlled phase I/II trial. J Gastroenterol Hepatol 199 PubMed
- Lozano, P., Flores, D., Martinez, S., Artigues, I., Rimbau, E. M., and Gomez, F. Upper limb ischemia induced by chronic licorice ingestion. J Cardiovasc.Surg (Torino) 2000;41(4):631-632.
- Brouwers, A. J. and van der, Meulen J. ['Licorice hypertension' also caused by licorice tea]. Ned.Tijdschr Geneeskd. 4-14-2001;145(15):744-747.
- van Rossum, T. G., Vulto, A. G., Hop, W. C., and Schalm, S. W. Glycyrrhizin-induced reduction of ALT in European patients with chronic hepatitis C. Am J Gastroenterol 2001;96(8):2432-2437. PubMed
- Sigurjonsdottir, H. A., Manhem, K., Axelson, M., and Wallerstedt, S. Subjects with essential hypertension are more sensitive to the inhibition of 11 beta-HSD by liquorice. J Hum Hypertens 2003;17(2):125-131.
- Shintani, S., Murase, H., Tsukagoshi, H., and Shiigai, T. Glycyrrhizin (licorice)-induced hypokalemic myopathy. Report of 2 cases and review of the literature. Eur Neurol 1992;32(1):44-51. PubMed
- Chen, M. F., Shimada, F., Kato, H., Yano, S., and Kanaoka, M. Effect of oral administration of glycyrrhizin on the pharmacokinetics of prednisolone. Endocrinol Jpn 1991;38(2):167-174. PubMed
- Lee, C. K., Park, K. K., Lim, S. S., Park, J. H., and Chung, W. Y. Effects of the licorice extract against tumor growth and cisplatin-induced toxicity in a mouse xenograft model of colon cancer. Biol Pharm Bull 2007;30(11):2191-2195. PubMed
- Isaia, G. C., Pellissetto, C., Ravazzoli, M., and Tamone, C. Acute adrenal crisis and hypercalcemia in a patient assuming high liquorice doses. Minerva Med 2008;99(1):91-94.
- Bocker, D. and Breithardt, G. [Induction of arrhythmia by licorice abuse]. Z Kardiol 1991;80(6):389-391.
- Tacconi, P., Paribello, A., Cannas, A., and Marrosu, M. G. Carpal tunnel syndrome triggered by excessive licorice consumption. J Peripher.Nerv.Syst. 2009;14(1):64-65. PubMed
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- Goultschin, J., Palmon, S., Shapira, L., Brayer, L., and Gedalia, I. Effect of glycyrrhizin-containing toothpaste on dental plaque reduction and gingival health in humans. A pilot study. J Clin Periodontol 1991;18(3):210-212. PubMed
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- MacKenzie, M. A., Hoefnagels, W. H., Jansen, R. W., Benraad, T. J., and Kloppenborg, P. W. The influence of glycyrrhetinic acid on plasma cortisol and cortisone in healthy young volunteers. J Clin Endocrinol Metab 1990;70(6):1637-1643. PubMed
- Bardhan, K. D., Cumberland, D. C., Dixon, R. A., and Holdsworth, C. D. Clinical trial of deglycyrrhizinised liquorice in gastric ulcer. Gut 1978;19(9):779-782. PubMed
- Koster, M. and David, G. K. Reversible severe hypertension due to licorice ingestion. N Engl J Med 1968;278(25):1381-1383. PubMed
- Corse, F. M., Galgani, S., Gasparini, C., Giacanelli, M., and Piazza, G. Acute hypokalemic myopathy due to chronic licorice ingestion: report of a case. Ital J Neurol Sci 1983;4(4):493-497. PubMed
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Parts of this content are provided by the Therapeutic Research Center, LLC.
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.
© 2021 Therapeutic Research Center, LLC