Horny Goat Weed Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Horny Goat Weed 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
Horny Goat Weed is a dietary supplement by Windmill Health Products with 6 active ingredients. Its ingredients are commonly taken for low libido and sexual function, energy and stamina, menopause symptoms.Based on those ingredients, 1,209 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Horny Goat Weed Extract, Cordyceps sinensis extract, Mucuna pruriens extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Horny Goat Weed by Windmill Health Products
Ask about any prescription or over-the-counter medication and we check it for interactions with Horny Goat Weed by Windmill Health Products — 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 Horny Goat Weed by Windmill Health Products
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
Low disclosure
This product contains six ingredients: a proprietary blend (whose components are listed individually), plus maca, horny goat weed extract, oat extract standardized to 10:1 concentration, cordyceps sinensis extract, and mucuna pruriens extract, along with inactive ingredients like cellulose, calcium carbonate, and magnesium stearate. The active ingredients are meant to support sexual function and energy; oat extract is also included for cardiovascular health.
We could not check polypodium vulgare for interactions.
Does it work?
Insufficient evidence
The evidence doesn't support these ingredients strongly. Horny goat weed extract, maca, and cordyceps all have insufficient reliable evidence for the conditions this product targets, including sexual dysfunction.
Oat extract is likely effective for cholesterol and heart health, but that's not the primary claim here. None of the other ingredients have established effectiveness ratings in our data for their intended uses in this product.
How safe is it?
Well-documented data
Horny goat weed extract is generally well tolerated short-term, though human safety data is limited and quality varies between brands. The most common side effects are dizziness, dry mouth, nosebleed, thirst, and vomiting; a rare serious effect is respiratory arrest.
Long-term use has been linked to vomiting, dry mouth, thirst, and nosebleed. Oat extract is generally well tolerated and may cause bloating, flatulence, and abdominal distension as your digestive system adjusts — these usually fade with continued use.
Cordyceps seems well tolerated short-term but may cause abdominal discomfort, diarrhea, or constipation; a rare case of liver inflammation has been reported. Mucuna pruriens is generally well tolerated, though diarrhea, flatulence, nausea, and abdominal distension have been reported in some studies.
Maca is generally well tolerated as a food, though raw maca can cause stomach pain. Pregnancy safety is a concern: horny goat weed, maca, cordyceps, and mucuna pruriens all lack sufficient safety data in supplement amounts and should be avoided during pregnancy.
Mucuna pruriens should also be avoided while breastfeeding because its levodopa content may lower milk supply.
Meds to double-check
Major interaction found
Before taking this product, confirm with your pharmacist or doctor if you take any monoamine oxidase inhibitor (an older type of antidepressant), methyldopa (a blood pressure drug), levodopa (Parkinson's medication), blood pressure medications, blood thinners or antiplatelet drugs, diabetes medications, insulin, estrogen or birth control, antipsychotics, tricyclic antidepressants, guanethidine, immunosuppressants, or anesthesia drugs. These are the medication types with documented interactions; do not start this product without checking your full medication list.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with insufficient evidence for its stated purpose. Major medication interactions have been identified, and safety information is well characterized.
This product is not for you if you take blood pressure medications, blood thinners, diabetes drugs, insulin, antidepressants (especially older MAOIs), antipsychotics, or estrogen therapy, or if you're pregnant or breastfeeding. The effectiveness evidence for sexual function is thin across all ingredients.
If you're considering this supplement, talk it over with your doctor or pharmacist first — especially if you're on any regular medications or have heart disease, high blood pressure, or diabetes.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 5 of 6 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jul 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 Horny Goat Weed, straight from the product label.
| Brand | Windmill Health Products |
|---|---|
| Barcode (UPC) | 035046047429 |
| Net contents | 60 Tablet(s) |
| Market status | On market |
| Date entered into DSLD | Jul 23, 2020 |
| DSLD ID | 231226 |
| Product type | Other Combinations |
| Supplement form | Tablet Or Pill |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Horny Goat Weed by Windmill Health Products, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Proprietary Blend | 250 mg | -- |
| Maca | 0 NP | -- |
| Horny Goat Weed Extract | 500 mg | -- |
| Oat 10:1 extract | 0 NP | -- |
| Cordyceps sinensis extract | 0 NP | -- |
| Mucuna pruriens extract | 0 NP | -- |
| Polypodium vulgare | 0 NP | -- |
Other ingredients: Calcium Carbonate, Microcrystalline Cellulose, Hypromellose, Stearic Acid, Silica, Magnesium Stearate, Coating
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
Directions: Take 1 tablet daily, with a meal, as a dietary supplement or as directed by a healthcare professional.
Precautions
Keep out of reach of children.
Do not use if inner seal is broken.
Warning: Pregnant or lactating women should consult with their physician prior to taking this product.
Storage
Protect from heat, light and moisture. Store in a cool, dry place.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Formulation
Nature's aphrodisiac Maximum potency
Helps boost libido Supports sexual function Promotes health Nitric Oxide
Sustained release formula
Made in the U.S.A. from globally sourced ingredients.
Formula
(Epimedium sagittatum) Standardized 10% Icarin compound With maca, oat extract, & cordyceps
FDA Statement of Identity
Dietary Supplement
Brand IP Statement(s)
Copyright 2019 Windmill Health Products All rights reserved.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Horny Goat Weed by Windmill Health Products 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 Horny Goat Weed by Windmill Health Products
These are the 6 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Tablet(s) Dosage formTablet Or Pill 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.
Proprietary Blend
- › Maca
- › Oat 10:1 extract
- › Cordyceps sinensis extract
- › Mucuna pruriens extract
- › Polypodium vulgare
Horny Goat Weed Extract
Interacts with963 drugs
Horny goat weed (Epimedium) is a traditional Chinese herb most often marketed for low libido and erectile problems, but solid human evidence for these...
Horny Goat Weed Extract monograph & interactionsOther (inactive) ingredients: Calcium Carbonate, Microcrystalline Cellulose, Hypromellose, Stearic Acid, Silica, Magnesium Stearate, Coating. These complete the product’s ingredient list but are not active constituents.
Horny Goat Weed by Windmill Health Products Drug Interactions
HelloPharmacist Interaction Report
Horny Goat Weed by Windmill Health Products interacts with medications through its horny goat weed extract and mucuna pruriens extract ingredients.
The most serious interaction is with mucuna pruriens extract and monoamine oxidase inhibitors (MAOIs) — a class of older antidepressants — which theoretically risks a sudden dangerous spike in blood pressure (hypertensive crisis). Mucuna pruriens also carries major-severity interactions with the blood pressure drug methyldopa, levodopa (a Parkinson's medication), and anesthesia drugs used during surgery.
Read the full breakdown — every affected drug type, severity by severity
Horny goat weed extract poses moderate-severity interactions with blood pressure medications (antihypertensives), blood thinners and antiplatelet drugs, estrogen (including birth control and hormone therapy), and several drugs your liver processes — specifically CYP1A2, CYP2B6, and CYP3A4 substrates. Oat extract theoretically increases the risk of low blood sugar (hypoglycemia) when combined with diabetes medications or insulin.
Cordyceps extract may increase bleeding risk with blood thinners and antiplatelet drugs, and might interfere with immunosuppressant therapy.
Mucuna pruriens also interacts with antidiabetes medications, antipsychotics, tricyclic antidepressants, and guanethidine (an older blood pressure drug) — all at moderate severity. We could not check polypodium vulgare, one of the six ingredients.
Altogether, these interactions span 1,210 individual medications.
Use the search tool on this page to check your exact medications before starting this product, or ask your pharmacist to run through them with you.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Horny Goat Weed?
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 Horny Goat Weed interact with 1,209 drugs. Click any drug to see the details.
4 of the 6 ingredients in Horny Goat Weed interact with drugs. Each result below shows which ingredient is responsible. Horny Goat Weed Extract Cordyceps sinensis extract Mucuna pruriens extract Oat 10:1 extract
AmphetamineAdensys XR-ODT, Adzenys ER, Dyanavel XR, Mydayis
How Amphetamine interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Amphetamine interactionBenserazide, LevodopaMadopar, Prolopa
How Benserazide, Levodopa interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractLevodopa Major
Interaction Summary
Concomitant use can increase the risk of levodopa-related adverse effects.
Read the full Mucuna Pruriens Extract + Benserazide, Levodopa interactionCarbidopa, LevodopaDhivy, Rytary, Sinemet, Sinemet CR
How Carbidopa, Levodopa interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractLevodopa Major
Interaction Summary
Concomitant use can increase the risk of levodopa-related adverse effects.
Read the full Mucuna Pruriens Extract + Carbidopa, Levodopa interactionCarbidopa, Levodopa, EntacaponeStalevo
How Carbidopa, Levodopa, Entacapone interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractLevodopa Major
Interaction Summary
Concomitant use can increase the risk of levodopa-related adverse effects.
Read the full Mucuna Pruriens Extract + Carbidopa, Levodopa, Entacapone interactionChlorothiazide, MethyldopaAldochlor, Aldoclor 150, Aldoclor 250
How Chlorothiazide, Methyldopa interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMethyldopa (aldomet) Major
Interaction Summary
Theoretically, concomitant use of cowhage and methyldopa might increase the risk of hypotension.
Read the full Mucuna Pruriens Extract + Chlorothiazide, Methyldopa interactionHorny Goat Weed ExtractAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, horny goat weed might increase the risk of hypotension.
Read the full Horny Goat Weed Extract + Chlorothiazide, Methyldopa interactionHydrochlorothiazide, MethyldopaAldoril 15, Aldoril 25, Aldoril D30, Methazide
How Hydrochlorothiazide, Methyldopa interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMethyldopa (aldomet) Major
Interaction Summary
Theoretically, concomitant use of cowhage and methyldopa might increase the risk of hypotension.
Read the full Mucuna Pruriens Extract + Hydrochlorothiazide, Methyldopa interactionHorny Goat Weed ExtractAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, horny goat weed might increase the risk of hypotension.
Read the full Horny Goat Weed Extract + Hydrochlorothiazide, Methyldopa interactionIsocarboxazidMarplan
How Isocarboxazid interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Isocarboxazid interactionLevodopaInbrija, Larodopa
How Levodopa interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractLevodopa Major
Interaction Summary
Concomitant use can increase the risk of levodopa-related adverse effects.
Read the full Mucuna Pruriens Extract + Levodopa interactionLevodopa, CarbidopaDuodopa
How Levodopa, Carbidopa interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractLevodopa Major
Interaction Summary
Concomitant use can increase the risk of levodopa-related adverse effects.
Read the full Mucuna Pruriens Extract + Levodopa, Carbidopa interactionMethyldopaAldomet, Methyldopa
How Methyldopa interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMethyldopa (aldomet) Major
Interaction Summary
Theoretically, concomitant use of cowhage and methyldopa might increase the risk of hypotension.
Read the full Mucuna Pruriens Extract + Methyldopa interactionHorny Goat Weed ExtractAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, horny goat weed might increase the risk of hypotension.
Read the full Horny Goat Weed Extract + Methyldopa interactionMoclobemideManerix, Moclobemide
How Moclobemide interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Moclobemide interactionOzanimod HydrochlorideZeposia
How Ozanimod Hydrochloride interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Ozanimod Hydrochloride interactionCordyceps Sinensis ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, concurrent use of cordyceps might interfere with immunosuppressive therapy.
Read the full Cordyceps Sinensis Extract + Ozanimod Hydrochloride interactionPhenelzine SulfateNardil
How Phenelzine Sulfate interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Phenelzine Sulfate interactionRasagilineAzilect
How Rasagiline interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Rasagiline interactionHorny Goat Weed ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, horny goat weed might increase the effects and side effects of CYP1A2 substrates.
Read the full Horny Goat Weed Extract + Rasagiline interactionSafinamide MesylateXadago
How Safinamide Mesylate interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Safinamide Mesylate interactionSelegilineCarbex, Eldepryl, Emsam, Zelapar
How Selegiline interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Selegiline interactionTranylcypromineParnate
How Tranylcypromine interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractMonoamine Oxidase Inhibitors (maois) Major
Interaction Summary
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Read the full Mucuna Pruriens Extract + Tranylcypromine interaction6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Cordyceps Sinensis ExtractImmunosuppressants Moderate
Interaction Summary
Theoretically, concurrent use of cordyceps might interfere with immunosuppressive therapy.
Read the full Cordyceps Sinensis Extract + 6-mercaptopurine interactionAdo-trastuzumab EmtansineKadcyla
How Ado-trastuzumab Emtansine interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Horny Goat Weed ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, horny goat weed might increase the effects and side effects of CYP3A4 substrates.
Read the full Horny Goat Weed Extract + Ado-trastuzumab Emtansine interactionAbciximabReoPro
How Abciximab interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Cordyceps Sinensis ExtractAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, cordyceps may increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
Read the full Cordyceps Sinensis Extract + Abciximab interactionHorny Goat Weed ExtractAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, horny goat weed might increase the risk of bleeding.
Read the full Horny Goat Weed Extract + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Horny Goat Weed ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, horny goat weed might increase the effects and side effects of CYP3A4 substrates.
Read the full Horny Goat Weed Extract + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Horny Goat Weed ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, horny goat weed might increase the effects and side effects of CYP3A4 substrates.
Read the full Horny Goat Weed Extract + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Horny Goat Weed ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, horny goat weed might increase the effects and side effects of CYP3A4 substrates.
Read the full Horny Goat Weed Extract + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Cordyceps Sinensis ExtractAnticoagulant/antiplatelet Drugs, Immunosuppressants Moderate
Interaction Summary
Theoretically, cordyceps may increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
Read the full Cordyceps Sinensis Extract + Abrocitinib interactionHorny Goat Weed ExtractAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, horny goat weed might increase the risk of bleeding.
Read the full Horny Goat Weed Extract + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Horny Goat Weed ExtractCytochrome P450 3a4 (cyp3a4) Substrates Moderate
Interaction Summary
Theoretically, horny goat weed might increase the effects and side effects of CYP3A4 substrates.
Read the full Horny Goat Weed Extract + Acalabrutinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Oat 10:1 ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, oats may have additive effects with antidiabetic agents and might increase the risk of hypoglycemia.
Read the full Oat 10:1 Extract + Acarbose interactionMucuna Pruriens ExtractAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, concomitant use of cowhage and antidiabetes drugs might increase the risk of hypoglycemia.
Read the full Mucuna Pruriens Extract + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Horny Goat Weed ExtractAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, horny goat weed might increase the risk of hypotension.
Read the full Horny Goat Weed Extract + Acebutolol interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Horny Goat Weed — through 2 ingredients. Tap an ingredient for the detail:
Horny Goat Weed ExtractAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, horny goat weed might increase the risk of bleeding.
Read the full Horny Goat Weed Extract + Acenocoumarol interactionCordyceps Sinensis ExtractAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, cordyceps may increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
Read the full Cordyceps Sinensis Extract + Acenocoumarol interactionAcepromazineAtravet
How Acepromazine interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Mucuna Pruriens ExtractAntipsychotic Drugs Moderate
Interaction Summary
Theoretically, use of cowhage might decrease the clinical effects of antipsychotic drugs.
Read the full Mucuna Pruriens Extract + Acepromazine interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Horny Goat Weed — through 1 ingredient. Tap an ingredient for the detail:
Horny Goat Weed ExtractCytochrome P450 1a2 (cyp1a2) Substrates Moderate
Interaction Summary
Theoretically, horny goat weed might increase the effects and side effects of CYP1A2 substrates.
Read the full Horny Goat Weed Extract + Acetaminophen interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Horny Goat Weed 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.
Horny Goat Weed Extract
Anticoagulant/Antiplatelet Drugs
Theoretically, horny goat weed might increase the risk of bleeding.
In vitro research and animal research shows that horny goat weed can inhibit platelet aggregation and thrombus formation. This effect has not been reported in humans.
Antihypertensive Drugs
Theoretically, horny goat weed might increase the risk of hypotension.
Laboratory research suggests that horny goat weed might have hypotensive effects. This effect has not been reported in humans.
Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, horny goat weed might increase the effects and side effects of CYP1A2 substrates.
In vitro, horny goat weed leaf extract inhibits CYP1A2. This effect has not been reported in humans.
Cytochrome P450 2B6 (Cyp2B6) Substrates
Theoretically, horny goat weed might increase the effects and side effects of CYP2B6 substrates.
In vitro, horny goat weed leaf extract inhibits CYP2B6. This effect has not been reported in humans.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, horny goat weed might increase the effects and side effects of CYP3A4 substrates.
In vitro, horny goat weed extract inhibits CYP3A4 and suppresses CYP3A4 mRNA expression. This effect has not been reported in humans.
Estrogens
Theoretically, concomitant use of horny goat weed with estrogens might increase their therapeutic and adverse effects.
In vitro evidence suggests that horny goat weed has estrogenic activity. In clinical research, horny goat weed has been shown to increase blood levels of estrogen in some females.
Cordyceps sinensis extract
Anticoagulant/Antiplatelet Drugs
Theoretically, cordyceps may increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
In vitro and animal research suggests that cordyceps extract inhibits platelet aggregation and function. However, this interaction has not been reported in humans.
Immunosuppressants
Theoretically, concurrent use of cordyceps might interfere with immunosuppressive therapy.
Animal and in vitro research suggests that cordyceps stimulates the immune system. However, limited clinical research suggests that taking cordyceps may lower the necessary therapeutic dose of the immunosuppressant cyclosporine, which suggests that cordyceps may have an immunosuppressive effect.
Testosterone
Theoretically, concurrent use of cordyceps and testosterone might have additive effects.
Animal research suggests that cordyceps can increase testosterone levels. The clinical significance of this finding is unclear.
Mucuna pruriens extract
Levodopa
Concomitant use can increase the risk of levodopa-related adverse effects.
Cowhage contains levodopa. Some cowhage products have been standardized to contain 75-400 mg of levodopa per dose.
Methyldopa (Aldomet)
Theoretically, concomitant use of cowhage and methyldopa might increase the risk of hypotension.
Cowhage contains levodopa. Use of levodopa with methyldopa might cause additive hypotension. In addition, methyldopa may inhibit peripheral decarboxylation of levodopa and increase levodopa levels in the central nervous system; avoid using.
Monoamine Oxidase Inhibitors (Maois)
Theoretically, concomitant use of cowhage and non-selective MAOIs might increase the risk of hypertensive crisis.
Cowhage contains levodopa. Use of levodopa with non-selective MAOIs might cause hypertensive crisis. However, this interaction has not been reported with MAO-B selective inhibitors such as selegiline.
Anesthesia
Theoretically, concomitant use of cowhage and anesthesia might increase the risk of arrhythmias.
Cowhage contains levodopa. Use of levodopa with cyclopropane or halogenated hydrocarbon anesthesia has led to arrhythmias. Other anesthetics have not been implicated. Use other anesthetics in patients taking cowhage or tell patients to stop taking cowhage at least 2 weeks before surgery.
Antidiabetes Drugs
Theoretically, concomitant use of cowhage and antidiabetes drugs might increase the risk of hypoglycemia.
Animal research shows that cowhage might have hypoglycemic effects.
Antipsychotic Drugs
Theoretically, use of cowhage might decrease the clinical effects of antipsychotic drugs.
Cowhage contains levodopa. Use of levodopa might counteract the antidopaminergic effects of antipsychotic medications.
Guanethidine (Ismelin)
Theoretically, concomitant use of cowhage and guanethidine might increase the risk of hypotension.
Cowhage contains levodopa. Use of levodopa with guanethidine might cause additive hypotension; avoid using.
Tricyclic Antidepressants (Tcas)
Theoretically, use of TCAs might reduce the levels and clinical effects of cowhage.
Cowhage contains levodopa. Use of TCAs might reduce the absorption of levodopa. Some case reports describe patients that developed hypertension and dyskinesia when taking both levodopa and TCAs.
Oat 10:1 extract
Antidiabetes Drugs
Theoretically, oats may have additive effects with antidiabetic agents and might increase the risk of hypoglycemia.
Consuming oats can decrease blood glucose in patients with diabetes. In those who require insulin, taking oats 100 grams daily for 2 days reduces the insulin dose required to achieve metabolic control.
Insulin
Concomitant use of oats and insulin might increase the risk of hypoglycemia.
In patients with insulin-dependent type 2 diabetes, taking oats 100 grams daily for 2 days reduces the insulin dose required to achieve metabolic control.
Brand information
Manufacturer and brand details for Horny Goat Weed, from the product label.
Windmill Health Products
See all Windmill Health Products products- Name
- Windmill Health Products
- Street Address
- 10 Henderson Drive
- City
- West Caldwell
- State
- NJ
- ZipCode
- 07006
Horny Goat Weed by Windmill Health Products: 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 Horny Goat Weed’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Maca
Maca is a nutrient-rich Andean root often used for energy, libido, and menopause symptoms. Early studies suggest it may modestly help sexual desire and some menopause symptoms, but the evide...
Read the full Maca monograph → Herb & supplement monographOats
Interacts with 86 drugsOats are a well-studied whole grain whose soluble fiber (beta-glucan) can help lower cholesterol and support heart health when eaten regularly. As a food, oats are safe for most people, and...
Read the full Oats monograph → Herb & supplement monographCordyceps
Interacts with 249 drugsCordyceps is a fungus used in traditional Chinese medicine for energy, exercise performance, and lung and immune support. Human research is limited and mostly low quality, so its benefits ar...
Read the full Cordyceps monograph → Herb & supplement monographCowhage
Interacts with 193 drugsCowhage (Mucuna pruriens) is a tropical legume best known as a natural source of L-dopa, the compound the body turns into dopamine. It is most studied for Parkinson's disease symptoms and ma...
Read the full Cowhage monograph → Herb & supplement monographHorny Goat Weed
Interacts with 963 drugsHorny goat weed (Epimedium) is a traditional Chinese herb most often marketed for low libido and erectile problems, but solid human evidence for these uses is lacking. While short-term use s...
Read the full Horny Goat Weed monograph →Sources & How We Checked
Horny Goat Weed'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 51 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.
Maca 1 reference
- Valerio, L. G., Jr. and Gonzales, G. F. Toxicological aspects of the South American herbs cat's claw (Uncaria tomentosa) and Maca (Lepidium meyenii) : a critical synopsis. Toxicol.Rev 2005;24(1):11-35. PubMed
Horny Goat Weed 11 references
- Cirigliano MD, Szapary PO. Horny goat weed for erectile dysfunction. Alt Med Alert 2001;4:19-22.
- Partin JF, Pushkin YR. Tachyarrhythmia and hypomania with horny goat weed. Psychosomatics 2004;45:536-7. PubMed
- De Naeyer A, Pocock V, Milligan S, De Keukeleire D. Estrogenic activity of a polyphenolic extract of the leaves of Epimedium brevicornum. Fitoterapia 2005;76:35-40. PubMed
- Zhang CZ, Wang SX, Zhang Y, et al. In vitro estrogenic activities of Chinese medicinal plants traditionally used for the management of menopausal symptoms. J Ethnopharmacol 2005;98:295-300. PubMed
- Yap SP, Shen P, Li J, et al. Molecular and pharmacodynamic properties of estrogenic extracts from the traditional Chinese medicinal herb, Epimedium. J Ethnopharmacol 2007;113:218-24. PubMed
- Yan, F. F., Liu, Y., Liu, Y. F., and Zhao, Y. X. Herba Epimedii water extract elevates estrogen level and improves lipid metabolism in postmenopausal women. Phytother.Res. 2008;22(9):1224-1228. PubMed
- Ramanathan VS, Mitropoulos E, Shlopov B, et al. An Enzyte'ing' case of acute hepatitis. J Clin Gastroenterol 2011;45(9):834-5. PubMed
- Zhong Q, Shi Z, Zhang L, et al. The potential of Epimedium koreanum Nakai for herb-drug interaction. J Pharm Pharmacol 2017;69(10):1398-408. doi: 10.1111/jphp.12773.
- Irfan M, Kwon TH, Lee DH, et al. Antiplatelet and Antithrombotic Effects of Epimedium koreanum Nakai. Evid Based Complement Alternat Med. Apr 2021;2021:7071987. PubMed
- Tan K, Yang W, Pang L, Hou F. Differences in clinical characteristics among 726 patients with Chinese herbal medicine- or Western medicine-induced liver injury. Medicine (Baltimore) 2022;101(32):e29909. PubMed
- Li K, Yu XH, Maskey AR, et al. Cytochrome P450 3A4 suppression by epimedium and active compound kaempferol leads to synergistic anti-inflammatory effect with corticosteroid. Front Pharmacol 2023;13:1042756. PubMed
Oats 13 references
- Cooper SG, Tracey EJ. Small-bowel obstruction caused by oat-bran bezoar. N Engl J Med 1989;320:1148-9. DOI
- Pick ME, Hawrysh ZJ, Gee MI, et al. Oat bran concentrate bread products improve long-term control of diabetes: a pilot study. J Am Diet Assoc 1996;96:1254-61. PubMed
- Braaten JT, Scott FW, Wood PJ, et al. High beta-glucan oat bran and oat gum reduce postprandial blood glucose and insulin in subjects with and without type 2 diabetes. Diabet Med 1994;11:312-8.
- Rosario PG, Gerst PH, Prakash K, Albu E. Dentureless distention: oat bran bezoars cause obstruction. J Am Geriatr Soc 1990;38:608. PubMed
- Food and Drug Administration. Food labeling: health claims: oats and coronary heart disease. Fed Regist 1996;61:296-313.
- Foulke J. FDA Allows Whole Oat Foods To Make Health Claim on Reducing the Risk of Heart Disease. FDA Talk Paper. 1997. Available at: http://www.fda.gov/bbs/topics/ANSWERS/ANS00782.html.
- Chandalia M, Garg A, Lutjohann D, et al. Beneficial effects of high dietary fiber intake in patients with type 2 diabetes mellitus. N Engl J Med 2000;342:1392-8. PubMed
- Lembo A, Camilleri M. Chronic constipation. N Engl J Med 2003;349:1360-8. . PubMed
- De Paz Arranz S, Perez Montero A, Remon LZ, Molero MI. Allergic contact urticaria to oatmeal. Allergy 2002;57:1215. . PubMed
- Delgado G, Kleber ME, Krämer BK, et al. Dietary intervention with oatmeal in patients with uncontrolled type 2 diabetes mellitus - A crossover study. Exp Clin Endocrinol Diabetes. 2019;127(9):623-629. PubMed
- Sobhan M, Hojati M, Vafaie SY, Ahmadimoghaddam D, Mohammadi Y, Mehrpooya M. The efficacy of colloidal oatmeal cream 1% as add-on therapy in the management of chronic irritant hand eczema: A double-blind study. Clin Cosmet Investig Dermatol. 2020;13:241-25
- Hou Q, Li Y, Li L, Cheng G, Sun X, Li S, Tian H. The metabolic effects of oats intake in patients with type 2 diabetes: A systematic review and meta-analysis. Nutrients. 2015;7(12):10369-87. PubMed
- González-Afonso M, Cañas JA, Sastre B, et al. A Case of Anaphylaxis After Ingestion of Oats: Research Into New Allergens. J Investig Allergol Clin Immunol 2022;32(6):506-508. PubMed
Cordyceps 14 references
- Zhu JS, Halpern GM, Jones K. The scientific rediscovery of an ancient Chinese herbal medicine: Cordyceps sinensis: part I. J Altern Complement Med 1998;4:289-303.
- Zhu JS, Halpern GM, Jones K. The scientific rediscovery of a precious ancient Chinese herbal regimen: Cordyceps sinensis: part II. J Altern Complement Med 1998;4:429-57.
- Chen YJ, Shiao MS, Lee SS, Wang SY. Effect of Cordyceps sinensis on the proliferation and differentiation of human leukemic U937 cells. Life Sci 1997;60:2349-59. PubMed
- Zhao Y. [Inhibitory effects of alcoholic extract of Cordyceps sinensis on abdominal aortic thrombus formation in rabbits]. Chung Hua I Hsueh Tsa Chih (Taipei) 1991;71:612-5, 42.
- Chen GZ, Chen GL, Sun T, et al. Effects of Cordyceps sinensis on murine T lymphocyte subsets. Chin Med J (English) 1991;104:4-8.
- Zhu XY, Yu HY. [Immunosuppressive effect of cultured Cordyceps sinensis on cellular immune response]. Chung Hsi I Chieh Ho Tsa Chih 1990;10:485-7, 454.
- Hsu, C. C., Huang, Y. L., Tsai, S. J., Sheu, C. C., and Huang, B. M. In vivo and in vitro stimulatory effects of Cordyceps sinensis on testosterone production in mouse Leydig cells. Life Sci 9-5-2003;73(16):2127-2136. PubMed
- Ikumoto, T., Sasaki, S., Namba, H., Toyama, R., Moritoki, H., and Mouri, T. [Physiologically active compounds in the extracts from tochukaso and cultured mycelia of Cordyceps and Isaria]. Yakugaku Zasshi 1991;111(9):504-509. PubMed
- Wu, T. N., Yang, K. C., Wang, C. M., Lai, J. S., Ko, K. N., Chang, P. Y., and Liou, S. H. Lead poisoning caused by contaminated Cordyceps, a Chinese herbal medicine: two case reports. Sci.Total Environ. 4-5-1996;182(1-3):193-195. PubMed
- Hong T, Zhang M, Fan J. Cordyceps sinensis (a traditional Chinese medicine) for kidney transplant recipients (Review). Cochrane Database Syst Rev. 2015;(10):CD009698. doi: 10.1002/14651858.CD009698.pub2.
- Zhang HW, Lin ZX, Tung YS, Kwan TH, Mok CK, Leung C, Chan LS. Cordyceps sinensis (a traditional Chinese medicine) for treating chronic kidney disease (Review). Cochrane Database Syst Rev. 2014;(12):CD008353. doi: 10.1002/14651858.CD008353.pub2. PubMed
- Bee Yean O, Zoriah A. Efficacy of Cordyceps sinensis as an adjunctive treatment in hemodialysis patients: a systematic review and Meta-analysis. J Tradit Chin Med. 2019;39(1):1-14.
- Thurian D, Montani M, Stickel F. Drug-induced, mixed-type hepatitis following ingestion of Cordyceps sinensis. Int J Clin Pharmacol Ther 2022;60(2):115-120. PubMed
- Yu X, Mao Y, Shergis JL, et al. Effectiveness and safety of oral Cordyceps sinensis on stable COPD of GOLD stages 2-3: Systematic review and meta-analysis. Evid Based Complement Alternat Med. 2019;2019:4903671.
Cowhage 12 references
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Anon. Epidemiological notes and reports: Mucuna pruriens-associated pruritus--New Jersey. MMWR Morb Mortal Wkly Rep 1985;34:732-3.
- HP-200 in Parkinson's Disease study group. An alternative medicine treatment for Parkinson's disease: Results of a multicenter clinical trial. J Alt Comp Med 1995;1:249-55. DOI
- Infante ME, Perez AM, Simao MR, et al. Outbreak of acute toxic psychosis attributed to Mucuna pruriens. Lancet 1990;336:1129. PubMed
- Vaidya AB, Rajagopalan TG, Mankodi NA, et al. Treatment of Parkinson's disease with the cowhage plant-Mucuna pruriens Bak. Neurol India 1978;26:171-6.
- Vadivel V, Janardhanan K. Nutritional and anti-nutritional composition of velvet bean: an under-utilized food legume in south India. Int J Food Sci Nutr 2000;51:279-87. PubMed
- Akhtar MS, Qureshi AQ, Iqbal J. Antidiabetic evaluation of Mucuna pruriens, Linn seeds. J Pak Med Assoc 1990;40:147-50.
- Prakash, D., Niranjan, A., and Tewari, S. K. Some nutritional properties of the seeds of three Mucuna species. Int.J.Food Sci.Nutr. 2001;52(1):79-82.
- Vadivel, V. and Janardhanan, K. Nutritional and antinutritional characteristics of seven South Indian wild legumes. Plant Foods Hum.Nutr 2005;60(2):69-75. PubMed
- Creapure (Creatine Monohydrate). Toxicological Datasheet. Degussa BioActives. Available at: https://www.fda.gov/ohrms/DOCKETS/.../95s-0316-rpt0154-54-Ref-50-vol112.pdf.
- Pulikkalpura H, Kurup R, Mathew PJ, Baby S. Levodopa in Mucuna pruriens and its degradation. Sci Rep 2015;5:11078. PubMed
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