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Dietary supplement

Mucuna Pruriens Ingredients & Drug Interactions

by Weyland Brain Nutrition

Mucuna Pruriens label
See full label image
Capsule Category: Botanical
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Mucuna Pruriens 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

The interaction bottom line Most serious interaction: Major

Mucuna Pruriens is a dietary supplement by Weyland Brain Nutrition with 1 active ingredient. Its ingredients are commonly taken for parkinson's disease symptoms, male fertility and libido, mood and stress support.Based on those ingredients, 193 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Mucuna pruriens extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Mucuna Pruriens by Weyland Brain Nutrition

Ask about any prescription or over-the-counter medication and we check it for interactions with Mucuna Pruriens by Weyland Brain Nutrition — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Mucuna Pruriens by Weyland Brain Nutrition

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.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 20, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

Weyland Brain Nutrition Mucuna Pruriens is a single-ingredient supplement containing Mucuna pruriens extract, also called cowhage. This is a plant-derived source of levodopa, a compound that plays a role in dopamine production in your brain.

The extract is packed into capsules with hypromellose, an inactive ingredient used as a capsule material.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Cowhage's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: neurotransmitter precursor support.
  • We looked for evidence on: Parkinson disease, Anxiety, Sexual desire, mood, dopamine regulation, motor function.
  • The closest evidence on file: Cowhage is rated "Insufficient Reliable Evidence To Rate" for Anxiety (Natural Medicines).
  • Also on file: Cowhage is rated "Insufficient Reliable Evidence To Rate" for Parkinson disease, Sexual desire.

The evidence on file for Mucuna pruriens is insufficient to rate it. We hold no reliable evidence for its use in anxiety, erythema (skin redness), high prolactin levels, muscle pain, Parkinson disease, or rheumatoid arthritis.

That doesn't mean it doesn't work for these purposes — it means the data we have isn't strong enough to say either way. If you're considering this for a specific condition, talk it over with your doctor or pharmacist.

The evidence, ingredient by ingredient Cowhage

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Mucuna pruriens is generally well tolerated when taken by mouth, though gastrointestinal effects do occur in some people. The most common are diarrhea, flatulence, and stomach irritation.

When powdered extracts were given in higher doses (22.5 to 67.5 grams a day split across multiple doses), a small number of trial participants reported nausea, abdominal bloating, vomiting, and headaches; about 3% experienced insomnia. Because this supplement contains L-dopa — an active drug-like compound — it should be used carefully and under professional guidance.

The safety data advises against use during pregnancy due to insufficient safety information and its dopamine effects. Regarding breastfeeding, L-dopa can lower prolactin levels and reduce milk supply, so the data advises against using this product while breastfeeding.

Side effects, ingredient by ingredient Cowhage

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Cowhage.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: diabetes medications; Parkinson's medications.
  • For scale: 193 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, double-check with your doctor or pharmacist if you take any monoamine oxidase inhibitors (MAOIs), methyldopa, levodopa, anesthetics, antidiabetes drugs, antipsychotic medications, tricyclic antidepressants, or guanethidine. These carry documented interactions ranging from major to moderate severity, including risks of dangerous blood pressure changes, low blood sugar, reduced drug effectiveness, and heart rhythm problems.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Major medication interactions have been identified, and safety information is well characterized.

This is a potent supplement because its levodopa content interacts with dozens of common medications, particularly blood pressure drugs, antidepressants, antipsychotics, and diabetes medications. If you take any prescription medication — especially anything for blood pressure, depression, psychosis, or diabetes — you need to check it against this product before starting.

Talk with your own doctor or pharmacist before adding Mucuna pruriens to your routine.

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 May 19, 2022.

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

At a glance

General information

Key facts about Mucuna Pruriens, straight from the product label.

Brand Weyland Brain Nutrition
Barcode (UPC) X000X17EZB
Net contents 100 Vegetarian Capsule(s)
Market status On market
Date entered into DSLD May 19, 2022
DSLD ID 265233
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free
From the label
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 Mucuna Pruriens by Weyland Brain Nutrition, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Vegetarian Capsule(s)
Maximum serving Sizes:
2 Vegetarian Capsule(s)
Servings per container
50
UPC/BARCODE
X000X17EZB
IngredientAmount% DV
Mucuna pruriens extract1000 mg--

Other ingredients: Hypromellose

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions

Suggested Use As a dietary supplement, take 1 to 2 capsules daily, or as recommended by your qualified healthcare professional. Best when taken early in the day.

Formulation

About All Weyland Brain Nutrition products are manufactured in the USA with globally sourced ingredients at an FDA registered, cGMP compliant, and 3rd party rated facility.

Gluten free Soy free Dairy free No artificial flavors or colors

V Vegan

Contains No: Soy, dairy, fish, gluten, peanuts, shellfish, tree nuts, wheat or yeast, no artificial flavor or colors.

Seals/Symbols

FDA Registered Facility Manufactured In The USA GMP Good Manufacturing Practice

FDA Disclaimer Statement

This product is not intended to diagnose, treat, cure or prevent any disease.

Formula

A precursor of multiple neurotransmitters, each serving provides 100 mg of Mucuna extract

FDA Statement of Identity

Dietary Supplement

Precautions

Warning: If you are pregnant, breastfeeding, on medication or have a known medical condition consult a qualified medical processional before taking Mucuna Pruriens.

Keep out of reach of children.

Do not use if seal under cap is broken or missing.

General Statements

Recyclable bottle

Storage

Store in a cool, dry place.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Mucuna Pruriens by Weyland Brain Nutrition label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Mucuna Pruriens label

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)
What’s inside

The Ingredients in Mucuna Pruriens by Weyland Brain Nutrition

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Vegetarian Capsule(s) Dosage formCapsule Servings per container50 Amounts shown are per serving.

Mucuna pruriens extract

Interacts with
193 drugs
1000 mg per serving

Cowhage (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...

Mucuna pruriens extract monograph & interactions

Other (inactive) ingredients: Hypromellose. These complete the product’s ingredient list but are not active constituents.

Interaction report

Mucuna Pruriens by Weyland Brain Nutrition Drug Interactions

Want to check YOUR meds against Mucuna Pruriens?

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 checker
193Drugs
17 Major 176 Moderate

Ingredients driving the most interactions

Mucuna pruriens extract 193

Individual Drug Interactions

The ingredients in Mucuna Pruriens interact with 193 drugs. Click any drug to see the details.

1 of the 1 ingredient in Mucuna Pruriens interact with drugs. Each result below shows which ingredient is responsible. Mucuna pruriens extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Mucuna Pruriens 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.

Mucuna pruriens extract8 drug types · 193 drugs

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.

Likelihood Likely Evidence D
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.

Likelihood Probable Evidence D
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.

Likelihood Probable Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Probable Evidence D
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.

Likelihood Possible Evidence D
Mucuna pruriens extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Mucuna Pruriens, from the product label.

Weyland Brain Nutrition

See all Weyland Brain Nutrition products
Name
Enjoy Nutrition, LLC
City
Tustin
State
CA
ZipCode
92781
Phone Number
(415) 658-6035
Web Address
GETWEYLAND.COM
Pharmacist Counseling Corner

Mucuna Pruriens by Weyland Brain Nutrition: Common Questions

Does Mucuna Pruriens by Weyland Brain Nutrition interact with any medications?
Yes. Based on its ingredients, Mucuna Pruriens has a known interaction with 193 medications, including 17 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Mucuna Pruriens contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What is Mucuna pruriens and why would someone take it?
Mucuna pruriens, also called cowhage, is a plant extract that contains levodopa, a compound involved in dopamine production. People have explored it for conditions like Parkinson disease, anxiety, and high prolactin levels, though the evidence on file is not strong enough to rate how well it works for any of these uses.
What side effects might I experience?
Gastrointestinal effects are the most common — diarrhea, flatulence, and stomach irritation. When taken in higher doses, some people reported nausea, bloating, vomiting, headaches, and insomnia, though these were uncommon in the studies we have data for.
Can I take this while pregnant?
No. The safety data advises against using Mucuna pruriens during pregnancy due to insufficient safety information and its dopamine effects. Talk with your doctor or pharmacist about alternatives or whether this is right for you.
Can I take this while breastfeeding?
No. The levodopa in this supplement can lower prolactin levels and reduce milk supply, so the data advises against using it while breastfeeding. Discuss this with your doctor or pharmacist if you're breastfeeding.
Are there other ingredients I should know about?
The capsules contain hypromellose, which is an inactive ingredient used as the capsule material itself. The active component is the Mucuna pruriens extract, which provides the levodopa.
Why does this interact with so many medications?
Mucuna pruriens contains levodopa, a potent compound that affects dopamine and other neurotransmitters. Levodopa interacts with blood pressure medications, antidepressants, antipsychotics, diabetes drugs, and anesthetics because it changes how your nervous system works and how your body processes other drugs.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Mucuna Pruriens is safe with your meds?

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Ask a pharmacist

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.

Mucuna Pruriens label
Go deeper

The Full Monographs Behind Mucuna Pruriens’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Cowhage

Interacts with 193 drugs

Cowhage (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 →
Sources

Sources & How We Checked

Mucuna Pruriens'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.

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 12 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.

Cowhage 12 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  3. Anon. Epidemiological notes and reports: Mucuna pruriens-associated pruritus--New Jersey. MMWR Morb Mortal Wkly Rep 1985;34:732-3.
  4. 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
  5. Infante ME, Perez AM, Simao MR, et al. Outbreak of acute toxic psychosis attributed to Mucuna pruriens. Lancet 1990;336:1129. PubMed
  6. 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.
  7. 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
  8. Akhtar MS, Qureshi AQ, Iqbal J. Antidiabetic evaluation of Mucuna pruriens, Linn seeds. J Pak Med Assoc 1990;40:147-50.
  9. 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.
  10. 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
  11. Creapure (Creatine Monohydrate). Toxicological Datasheet. Degussa BioActives. Available at: https://www.fda.gov/ohrms/DOCKETS/.../95s-0316-rpt0154-54-Ref-50-vol112.pdf.
  12. Pulikkalpura H, Kurup R, Mathew PJ, Baby S. Levodopa in Mucuna pruriens and its degradation. Sci Rep 2015;5:11078. PubMed

See these in context on the Cowhage monograph →

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

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