Major interaction on record — check this product against your medications before combining. Based on 4 of 7 ingredients. Check your meds →
Dietary supplement

Antler Test Ingredients & Drug Interactions

by NutraKey

Antler Test label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Antler Test 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

Antler Test is a dietary supplement by NutraKey with 7 active ingredients. Its ingredients are commonly taken for erectile dysfunction, low libido, fatigue and low energy.Based on those ingredients, 1,227 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Yohimbine, Epimedium sagittatum, Tribulus terrestris. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Antler Test by NutraKey

Ask about any prescription or over-the-counter medication and we check it for interactions with Antler Test by NutraKey — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Antler Test by NutraKey

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 Jul 11, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 2 of its 7 active ingredients.

Antler Test contains 7 active ingredients: Epimedium sagittatum, Maca, Tribulus terrestris, New Zealand Red Deer Antler Velvet Extract, Antler Test Complex, Yohimbine, and D-Aspartic Acid. The product also contains gelatin and rice flour as inactive ingredients to form and fill the capsules.

Does it work?

Moderate evidence
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
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: enhance testosterone, athletic performance, energy levels.
  • We looked for evidence on: Age-related testosterone deficiency, Athletic performance, Exercise-induced muscle damage, Fatigue, Male infertility, Sexual desire — and 4 related terms.
  • The strongest evidence on file: Tribulus is rated "Possibly Effective" for Sexual dysfunction (Natural Medicines).
  • Also on file: Tribulus is rated "Possibly Ineffective" for Athletic performance.
  • Also on file: Tribulus is rated "Insufficient Reliable Evidence To Rate" for Chronic fatigue syndrome (CFS), Male infertility, Exercise-induced muscle damage.

Of the ingredients we could rate, the evidence is limited. Tribulus terrestris shows possibly effective evidence for sexual dysfunction, but the data for athletic performance is insufficient — the research doesn't support it for that use.

For the other active ingredients — Epimedium sagittatum, New Zealand Red Deer Antler Velvet Extract, Yohimbine, and D-Aspartic Acid — we hold no effectiveness ratings. Maca has been studied for amenorrhea, anemia, sexual dysfunction related to antidepressants, athletic performance, and osteoporosis, but the evidence for all these uses is rated insufficient to conclude whether it works.

The evidence, ingredient by ingredient Horny Goat Weed Maca Tribulus Yohimbe

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 4 of the 4 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 4 of 4.
  • General safety write-ups exist for 4 of 4.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Maca is generally well tolerated as a food, but long-term safety in supplement amounts hasn't been studied. Fresh, uncooked maca may cause stomach pain.

Tribulus is often well tolerated short-term in healthy adults, though long-term and quality safety data are limited. Gastrointestinal complaints like abdominal pain, cramping, nausea, vomiting, diarrhea, and constipation can occur, though one study found rates similar to placebo.

Rare serious effects — liver and kidney injury, seizures, and chronic painful erection — have been reported. Pregnancy and breastfeeding safety data are not adequate for Maca or Tribulus.

The safety data advises against both during pregnancy and breastfeeding. For the other four active ingredients — Epimedium sagittatum, New Zealand Red Deer Antler Velvet Extract, Yohimbine, and D-Aspartic Acid — we hold no pregnancy or breastfeeding safety information on file.

Side effects, ingredient by ingredient Horny Goat Weed Maca Tribulus Yohimbe

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?
  • 3 of the 4 matched ingredients can interact with medications — Tribulus, Horny Goat Weed, Yohimbe.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications; lithium.
  • For scale: 1,228 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 you take Antler Test, double-check if you're on blood pressure medications (Tribulus may lower blood pressure too much) or diabetes medications (Tribulus may increase low blood sugar risk). If you take lithium, the same ingredient could raise lithium levels in your body.

No interactions are documented for the other four active ingredients we could not fully check.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence for its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

This product may appeal to people interested in sexual function or athletic performance, but evidence is limited for most ingredients. If you take blood pressure medication, diabetes drugs, or lithium, do not start this without checking your exact medications first — Tribulus interactions could be serious.

Talk to your pharmacist before you add it, especially if you're pregnant, breastfeeding, or taking any regular medications.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 4 of 7 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 22, 2023.

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 Antler Test, straight from the product label.

Brand NutraKey
Barcode (UPC) 045635293212
Net contents 120 Capsule(s)
Market status On market
Date entered into DSLD Jun 22, 2023
DSLD ID 287382
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 Antler Test by NutraKey, 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:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
60
UPC/BARCODE
045635293212
IngredientAmount% DV
Epimedium sagittatum0 NP--
Maca0 NP--
Tribulus terrestris0 NP--
New Zealand Red Deer Antler Velvet Extract375 mg--
Antler Test Complex875 mg--
Yohimbine0 NP--
D-Aspartic Acid0 NP--

Other ingredients: Gelatin, Rice Flour

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.
Formulation

Enhance Testosterone, Athletic Performance, & Energy Levels Antler Test was designed to increase Growth Hormone (GH) levels and boost testosterone boost resulting in a lean, hard, muscular look with increased strength and higher energy altogether. Studies show that effective dosages of Antler Test's active compounds promote or overall increase in GH and testosterone levels which are important for lean muscle, vibrant energy, and sexual health. Elevated testosterone levels lead to gains in strength and vigor while reducing recovery time. Naturally Boost Testosterone Increase Energy, Endurance, & Stamina Support Lean, Hard, Muscular Look Stimulate Sexual Drive & Sense of Well-Being Elevate Growth Hormone Levels Increased testosterone levels have a positive effect on strength, stamina, lean muscle retention, and fat loss. Increased testosterone and GH levels have a dramatic impact on metabolism and fat loss, resulting in a leaner physique. Growth Hormone promotes a deep restful sleep which is extremely important for maximizing healing, recovery, regeneration and lean muscle growth.

High-Performance Liquid Chromatography (HPLC) Verified

Muscle Performance

New Zealand Red Deer Antler Strength & Muscle Builder Testosterone & Growth Hormone Optimizer Increase Energy Levels

Seals/Symbols

Made in the USA

Formula

Ultra Pure Ingredients

Suggested/Recommended/Usage/Directions

Recommended Use: Take 1 serving (2 capsules) twice daily with water or your favorite beverage, preferably on an empty stomach. For best results, take first serving in the morning and second serving 8-12 hours later. Spreading doses evenly results in sustained levels of active compounds. Take 40-60 minutes before sexual activity for added performance. For Maximum Results: Take for at least 4 to 8 consecutive weeks. It is recommended to cycle off periodically, this allows receptors time to readjust and become more sensitive. Cycling is generally used as an effective way to boost testosterone levels long term.

General Statements

Pure Nutrition Go Green Nutrakeyhealth.com Follow Us Free Giveaways Facebook Pintrest Instagram Twitter

Precautions

Warning: Pregnant or lactating women, diabetics, hypoglycemics, & people with known medical conditions and/or taking drugs should with a licensed physician and/or pharmacist prior to taking dietary supplements.

Do not use if seal is broken.

FDA Disclaimer Statement

These statements have not been reviewed by the Food & Drug Administration. This product is 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.

See for yourself

Antler Test by NutraKey label

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

Antler Test 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 Antler Test by NutraKey

These are the 7 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Epimedium sagittatum

Interacts with
963 drugs
0 NP per serving

Horny goat weed (Epimedium) is a traditional Chinese herb most often marketed for low libido and erectile problems, but solid human evidence for these...

Epimedium sagittatum monograph & interactions

Maca

No known
interactions
0 NP per serving

Maca is a nutrient-rich Andean root often used for energy, libido, and menopause symptoms. Early studies suggest it may modestly help sexual desire an...

Maca monograph & interactions

Tribulus terrestris

Interacts with
259 drugs
0 NP per serving

Tribulus is a plant supplement most often marketed to boost libido, testosterone, and athletic performance, but the human evidence behind these claims...

Tribulus terrestris monograph & interactions

New Zealand Red Deer Antler Velvet Extract

375 mg per serving

Antler Test Complex

875 mg per serving

Yohimbine

Interacts with
1,125 drugs
0 NP per serving Form: Yohimbe

Yohimbe is a West African tree bark that contains yohimbine, a compound mainly promoted for erectile dysfunction and as an aphrodisiac. A prescription...

Yohimbine monograph & interactions

D-Aspartic Acid

0 NP per serving

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

Interaction report

Antler Test by NutraKey Drug Interactions

Want to check YOUR meds against Antler Test?

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
1,227Drugs
9 Major 1,218 Moderate

Ingredients driving the most interactions

Yohimbine 1,125
Epimedium sagittatum 963
Tribulus terrestris 259

Individual Drug Interactions

The ingredients in Antler Test interact with 1,227 drugs. Click any drug to see the details.

3 of the 7 ingredients in Antler Test interact with drugs. Each result below shows which ingredient is responsible. Yohimbine Epimedium sagittatum Tribulus terrestris

Each ingredient & the kinds of drugs it affects

For each ingredient in Antler Test 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.

Yohimbine13 drug types · 1,125 drugs

Monoamine Oxidase Inhibitors (Maois)

Concomitant use of MAOIs with yohimbe can result in additive effects.
Yohimbine, a constituent of yohimbe, has MAO inhibitory effects. At high doses, yohimbine is a non-selective inhibitor of MAO.

Likelihood Likely Evidence D
Antihypertensive Drugs

Theoretically, yohimbe might reduce the effects of antihypertensive drugs.
Yohimbine, a constituent of yohimbe, is an alpha-2 adrenoceptor antagonist and has been reported to increase blood pressure in clinical research. Theoretically, concomitant use of yohimbe and antihypertensive drugs can interfere with blood pressure control.

Likelihood Probable Evidence D
Clonidine (Catapres)

Theoretically, yohimbe might precipitate clonidine withdrawal.
Chronic clonidine use can downregulate alpha-2 adrenoreceptors. Animal research and one human case report suggest that concomitant administration of yohimbine, an alpha-2 adrenoceptor antagonist, may precipitate clonidine withdrawal and lead to sympathomimetic toxicity, including hypertensive crisis.

Likelihood Possible Evidence D
Cytochrome P450 2D6 (Cyp2D6) Inhibitors

CYP2D6 inhibitors may increase the levels and adverse effects of yohimbine, a constituent of yohimbe.
In vitro and clinical research shows that the yohimbe bark constituent, yohimbine, is metabolized by CYP2D6 isoenzymes. Paroxetine, a cytochrome P450 (CYP) 2D6 inhibitor, increases the maximum serum concentration of yohimbine and reduces the clearance of yohimbine compared to yohimbine alone in patients who are extensive CYP2D6 metabolizers..

Likelihood Probable Evidence B
Cytochrome P450 2D6 (Cyp2D6) Substrates

Theoretically, yohimbe might increase the levels and adverse effects of CYP2D6 substrates.
In vitro research suggests that yohimbine, a constituent of yohimbe bark, inhibits CYP2D6 enzyme activity.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Inhibitors

Theoretically, CYP3A4 inhibitors might increase the levels and adverse effects of yohimbine, a constituent of yohimbe bark.
In vitro and clinical research shows that the yohimbe bark constituent, yohimbine, is metabolized by CYP3A4 enzymes. Theoretically, drugs that inhibit CYP3A4 might increase the levels and adverse effects of yohimbine.

Likelihood Possible Evidence D
Paroxetine (Paxil)

Paroxetine decreases the clearance of yohimbine and may increase its effects.
Paroxetine, a cytochrome P450 (CYP) 2D6 inhibitor, increases the maximum serum concentration of yohimbine by about 350% and reduces the clearance of yohimbine by about 80% compared to yohimbine alone in patients who are extensive CYP2D6 metabolizers. No significant changes in pharmacokinetic parameters of yohimbine were observed with coadministration of paroxetine in patients who are poor CYP2D6 metabolizers.

Likelihood Probable Evidence B
Phenothiazines

Theoretically, using yohimbine with phenothiazines might have additive effects.
Yohimbine, a constituent of yohimbe, has alpha-2 adrenergic antagonist effects. Theoretically, combining it with phenothiazines can cause additive alpha-2 adrenergic antagonism.

Likelihood Possible Evidence D
Stimulant Drugs

Theoretically, taking yohimbe with stimulant drugs can have additive effects.
Yohimbine, a constituent of yohimbe, has sympathomimetic effects and increases blood pressure in a dose-dependent manner. Theoretically, taking yohimbe with stimulant drugs can have additive stimulant and hypertensive effects.

Likelihood Possible Evidence D
Tricyclic Antidepressants (Tcas)

Theoretically, taking yohimbe with TCAs can increase adverse effects.
A small clinical study in patients taking TCAs for at least 4 weeks shows that receiving doses of intravenous yohimbine 2.5-20 mg daily for up to 7 days precipitates severe anxiety, agitation, and tremor. The effects of yohimbe bark itself are unclear; oral yohimbe bark contains 0.6% to 1.38% yohimbine, but it is unclear how much is absorbed.

Likelihood Possible Evidence D
Anticoagulant/Antiplatelet Drugs

Theoretically, combining yohimbe bark with antiplatelet or anticoagulant drugs might have additive effects; however, this has not been reported in clinical research.
Research in healthy adults shows that taking yohimbine, a constituent of yohimbe bark, in doses of 8 mg or more, seems to inhibit platelet aggregation in vitro by binding to the alpha-2 adrenoceptor. The effects of yohimbe bark itself are unclear; yohimbe bark contains 0.6% to 1.38% yohimbine, but it is unclear how much is absorbed.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, yohimbe might decrease the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that yohimbe extract induces CYP1A2 enzymes.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, yohimbe might decrease the levels and clinical effects of CYP3A4 substrates.
In vitro research shows that yohimbe extract induces CYP3A4 enzymes.

Likelihood Possible Evidence D
Yohimbine full monograph & interactions

Epimedium sagittatum6 drug types · 963 drugs

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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
Epimedium sagittatum full monograph & interactions

Tribulus terrestris3 drug types · 259 drugs

Antidiabetes Drugs

Taking tribulus with antidiabetes drugs might increase the risk of hypoglycemia.
Clinical research shows that Tribulus can lower blood glucose levels in adults with type 2 diabetes who are taking antidiabetes medications.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, taking tribulus with antihypertensive drugs might increase the risk of hypotension.
Animal research shows that tribulus can lower blood pressure by inhibiting angiotensin-converting enzyme (ACE). Tribulus has also demonstrated hypotensive effects in pre-hypertensive adults.

Likelihood Possible Evidence D
Lithium

Theoretically, tribulus might increase the levels and clinical effects of lithium.
Tribulus is thought to have diuretic properties. Due to these potential diuretic effects, tribulus might reduce excretion and increase levels of lithium. The dose of lithium might need to be decreased.

Likelihood Probable Evidence D
Tribulus terrestris full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Antler Test, from the product label.

NutraKey

See all NutraKey products
Name
Nutrakey
Street Address
975 Bennett Drive
City
Longwood
State
FL
ZipCode
32750
Web Address
Nutrakeyhealth.com
Pharmacist Counseling Corner

Antler Test by NutraKey: Common Questions

Does Antler Test by NutraKey interact with any medications?
Yes. Based on its ingredients, Antler Test has a known interaction with 1,227 medications, including 9 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Antler Test contains 7 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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.
Does this help with sexual function?
Tribulus terrestris in this product shows possibly effective evidence for sexual dysfunction. The other ingredients haven't been established by research — we hold no effectiveness ratings for them.
Can I take this if I'm pregnant?
No. Maca and Tribulus both have insufficient safety data in pregnancy; the safety data advises against both. For the other ingredients, we hold no pregnancy safety information on file. Talk with your doctor or pharmacist for personalized advice.
What are the side effects?
Maca may cause stomach pain if fresh and uncooked. Tribulus can cause abdominal pain, cramping, nausea, vomiting, diarrhea, or constipation — though one study found these rates similar to placebo. Rare serious effects like liver or kidney injury and seizures have been reported. For the other ingredients, we don't hold adverse-effect data.
Is Maca safe to take long term?
Maca is generally well tolerated as a food, but long-term safety in supplement amounts hasn't been studied. We can't say whether it's safe over months or years.
What is Tribulus terrestris for?
Tribulus is in this product for sexual function, where it shows possibly effective evidence. It's also been studied for athletic performance and benign prostatic hyperplasia (enlarged prostate), but the evidence for those uses is insufficient.

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

Not sure if Antler Test is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

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.

Antler Test label
Go deeper

The Full Monographs Behind Antler Test’s Ingredients

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

Herb & supplement monograph

Horny Goat Weed

Interacts with 963 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 uses is lacking. While short-term use s...

Read the full Horny Goat Weed monograph → Herb & supplement monograph

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 monograph

Tribulus

Interacts with 259 drugs

Tribulus is a plant supplement most often marketed to boost libido, testosterone, and athletic performance, but the human evidence behind these claims is weak and inconsistent. It is general...

Read the full Tribulus monograph → Herb & supplement monograph

Yohimbe

Interacts with 1,125 drugs

Yohimbe is a West African tree bark that contains yohimbine, a compound mainly promoted for erectile dysfunction and as an aphrodisiac. A prescription form of yohimbine has some evidence for...

Read the full Yohimbe monograph →
Sources

Sources & How We Checked

Antler Test'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 88 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.

Horny Goat Weed 11 references
  1. Cirigliano MD, Szapary PO. Horny goat weed for erectile dysfunction. Alt Med Alert 2001;4:19-22.
  2. Partin JF, Pushkin YR. Tachyarrhythmia and hypomania with horny goat weed. Psychosomatics 2004;45:536-7. PubMed
  3. 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
  4. 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
  5. 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
  6. 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
  7. Ramanathan VS, Mitropoulos E, Shlopov B, et al. An Enzyte'ing' case of acute hepatitis. J Clin Gastroenterol 2011;45(9):834-5. PubMed
  8. 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.
  9. 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
  10. 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
  11. 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

See these in context on the Horny Goat Weed monograph →

Maca 1 reference
  1. 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

See these in context on the Maca monograph →

Tribulus 10 references
  1. Sharifi AM, Darabi R, Akbarloo N. Study of antihypertensive mechanism of Tribulus terrestris in 2K1C hypertensive rats: role of tissue ACE activity. Life Sci 2003;73:2963-71. PubMed
  2. Walker D, Bird A, Flora T, O'Sullivan B. Some effects of feeding Tribulus terrestris, Ipomoea lonchophylla and the seed of Abelmoschus ficulneus on fetal development and the outcome of pregnancy in sheep. Reprod Fertil Dev 1992;4:135-44. PubMed
  3. Al-Ali M, Wahbi S, Twaij H, Al-Badr A. Tribulus terrestris: preliminary study of its diuretic and contractile effects and comparison with Zea mays. J Ethnopharmacol 2003;85:257-60. PubMed
  4. Tabakova, P., Dimitrov, M., Ognyanov, K., and et al. Clinical study of Tribestan in females with endocrine sterility. Documentation for Registration (unpublished) 1999.
  5. Akhtari E, Raisi F, Keshavarz M, et al. Tribulus terrestris for treatment of sexual dysfunction in women: randomized double-blind placebo-controlled study. Daru 2014;22:40. PubMed
  6. Ryan M, Lazar I, Nadasdy GM, et al. Acute kidney injury and hyperbilirubinemia in a young male after ingestion of Tribulus terrestris. Clin Nephrol 2015;83(3):177-83. PubMed
  7. Postigo S, Lima SM, Yamada SS, et al. Assessment of the effects of Tribulus terrestris on sexual function of menopausal women. Rev Bras Ginecol Obstet 2016;38(3):140-6. PubMed
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  9. Samani NB, Jokar A, Soveid M, Heydari M, Mosavat SH. Efficacy of the hydroalcoholic extract of Tribulus terrestris on the serum glucose and lipid profile of women with diabetes mellitus: a double-blind randomized placebo-controlled clinical trial. J Evid
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

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