Major interaction on record — check this product against your medications before combining. Based on 11 of 12 ingredients. Check your meds →
Dietary supplement

Black Ox Test Booster Ingredients & Drug Interactions

by EA Enhanced

Black Ox Test Booster label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Oct 7, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Black Ox Test Booster 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

Black Ox Test Booster is a dietary supplement by EA Enhanced with 12 active ingredients. Its ingredients are commonly taken for estrogen and hormone balance support, breast and cervical health, prostate health.Based on those ingredients, 1,314 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Black Pepper extract, Bulbine natalensis powder, Dehydroepiandrosterone. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Black Ox Test Booster by EA Enhanced

Ask about any prescription or over-the-counter medication and we check it for interactions with Black Ox Test Booster by EA Enhanced — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Black Ox Test Booster by EA Enhanced

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

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 12 of its 12 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

Black Ox Test Booster contains 12 active ingredients aimed at supporting testosterone and male performance. The formula includes indole-3-carbinol and diindolylmethane (from cruciferous vegetables), dehydroepiandrosterone (DHEA, a hormone precursor), Mucuna pruriens extract (which contains levodopa), Longjack extract, fenugreek extract, calcium, Akarkara extract, Fadogia agrestis powder, Bulbine natalensis powder, luteolin, and black pepper extract.

The capsules also contain inactive ingredients: gelatin, silicon dioxide, and magnesium stearate.

Does it work?

Leans against
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
Leans against

The strongest graded evidence we hold for the stated purpose leans against a benefit.

Why this rating?
  • The label markets this product for: testosterone support and lean muscle gains.
  • We looked for evidence on: Age-related testosterone deficiency, Athletic performance, Exercise-induced muscle damage, Erectile dysfunction (ED), Infertility, Muscle strength — and 3 related terms.
  • The closest evidence on file: Dhea is rated "Possibly Ineffective" for Muscle strength (Natural Medicines).
  • Also on file: Dhea is rated "Possibly Ineffective" for Infertility.
  • Also on file: Eurycoma Longifolia is rated "Possibly Ineffective" for Athletic performance.

The evidence for most ingredients in this formula is either insufficient or not established in our data. DHEA is possibly effective for vaginal atrophy and possibly effective for infertility, aging skin, and depression.

Longjack extract is possibly effective for sexual desire but possibly ineffective for athletic performance. Fenugreek extract is possibly effective for sexual dysfunction, sexual arousal, dysmenorrhea, and diabetes.

For the others—indole-3-carbinol, diindolylmethane, Mucuna pruriens, Akarkara, Fadogia agrestis, Bulbine natalensis, luteolin, and black pepper—the evidence for the claims on this product either isn't established or falls short of what we'd call reliable.

The evidence, ingredient by ingredient Indole-3-carbinol Dhea Cowhage Diindolylmethane Eurycoma Longifolia Calcium Pellitory Fenugreek

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 10 of the 11 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 11 of 11.
  • General safety write-ups exist for 11 of 11.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Most ingredients are generally well tolerated at typical doses, though several carry specific cautions. Indole-3-carbinol may cause diarrhea, nausea, rash, tremor, and imbalance (especially at higher doses), and should be used cautiously since supplement doses are less studied than food amounts.

DHEA can cause acne, headache, insomnia, and mood changes in both sexes, with feminizing or masculinizing side effects reported; it should only be used with medical guidance. Mucuna pruriens extract can cause diarrhea, flatulence, and nausea, and has caused insomnia in about 3% of trial participants.

Diindolylmethane is generally well tolerated but can cause diarrhea, gas, headache, nausea, rash, and rarely a serious rash syndrome (DRESS). Calcium is well tolerated at recommended doses but may cause constipation, upset stomach, and flatulence.

Fenugreek can cause abdominal pain, bloating, diarrhea, and nausea, and rarely severe allergic reactions. Bulbine natalensis and Fadogia agrestis have limited human safety data; animal studies suggest possible liver and kidney toxicity.

Black pepper is generally safe in food amounts but concentrated supplements warrant caution.

Side effects, ingredient by ingredient Indole-3-carbinol Dhea Cowhage Diindolylmethane Eurycoma Longifolia Calcium Pellitory Fenugreek

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?
  • 9 of the 11 matched ingredients can interact with medications — Dhea, Fenugreek, Calcium, Black Pepper, Cowhage, among others.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; diabetes medications; heart-rhythm medications; lithium; Parkinson's medications.
  • For scale: 1,315 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.

Check before starting if you take monoamine oxidase inhibitors (MAOIs) or methyldopa—the Mucuna pruriens extract carries Major-severity risk. Also talk to your pharmacist if you're on HIV integrase inhibitors (dolutegravir, elvitegravir), the antibiotic ceftriaxone, blood thinners, blood pressure or heart medications, antidiabetes drugs, antidepressants, hormone therapies, or seizure medications.

Avoid this product if you take levodopa or are considering anesthesia in the near future.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with graded evidence leaning against its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

This product targets male sexual function and testosterone with a multi-ingredient formula. Anyone taking medications—especially blood thinners, heart or blood pressure drugs, antidiabetes agents, antidepressants, seizure medications, or HIV medications—should check with a pharmacist or doctor before using it.

The hormonal ingredients (DHEA, Mucuna pruriens, fenugreek, Longjack, Bulbine) make this unsuitable for pregnancy and breastfeeding.

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

Assessment coverage: 11 of 12 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 24, 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

At a glance

General information

Key facts about Black Ox Test Booster, straight from the product label.

Brand EA Enhanced
Barcode (UPC) 817558022794
Net contents 240 Capsule(s)
Market status On market
Date entered into DSLD Jun 24, 2020
DSLD ID 223092
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 Black Ox Test Booster by EA Enhanced, 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:
8 Capsule(s)
Maximum serving Sizes:
8 Capsule(s)
Servings per container
30
UPC/BARCODE
817558022794
IngredientAmount% DV
Indole-3-Carbinol160 mg--
Dehydroepiandrosterone100 mg--
Mucuna pruriens extract200 mg--
3,3'-Diindolylmethane100 mg--
Longjack extract300 mg--
Calcium138 mg14%
Akarkara extract1500 mg--
Fenugreek extract1000 mg--
Fadogia agrestis powder1000 mg--
Bulbine natalensis powder500 mg--
Luteolin50 mg--
Black Pepper extract10 mg--

Other ingredients: Gelatin, Silicon Dioxide, Magnesium Stearate

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

Enhanced Black Ox Testosterone booster was designed to be the ultimate hardcore testosterone formula. We have included clinical dosages, patented ingredients and more to give you the results you finally deserve.

Hardcore test enhancer Lean mass builder PCT support

General Statements

Stop wasting time in the gym without Black Ox and begin optimizing your lean gains today! For the ultimate testosterone stack, try Black Ox with Enhanced Blue Ox Test Enhancer.

Max dose

Suggested/Recommended/Usage/Directions

Directions: As a dietary supplement take (8) capsules daily or as directed by your physician.

For maximum results stack with Blue Ox Blue Ox Test Enhancer

Precautions

Caution: As with any dietary supplement, consult your healthcare practitioner before using this product.

Keep out of reach of children.

Storage

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.

Seals/Symbols

Made in USA GMP Quality Good Manufacturing Practice Certification

FDA Statement of Identity

Dietary Supplement

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

See for yourself

Black Ox Test Booster by EA Enhanced label

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

Black Ox Test Booster 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 Black Ox Test Booster by EA Enhanced

These are the 12 active ingredients this product is made of. Select any to open its full monograph.

Serving size8 Capsule(s) Dosage formCapsule Servings per container30 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.

Indole-3-Carbinol

Interacts with
294 drugs
160 mg per serving

Indole-3-carbinol (I3C) is a compound formed when you eat cruciferous vegetables like broccoli and cabbage, and it is sold as a supplement mainly for...

Indole-3-Carbinol monograph & interactions

Dehydroepiandrosterone

Interacts with
777 drugs
100 mg per serving

DHEA is a natural hormone that the body makes and that declines with age, and it is sold as a supplement claiming many benefits. The evidence is mixed...

Dehydroepiandrosterone monograph & interactions

Mucuna pruriens extract

Interacts with
193 drugs
200 mg per serving Form: L-Dopa

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

3,3'-Diindolylmethane

Interacts with
269 drugs
100 mg per serving

Diindolylmethane (DIM) is a compound made when your body digests cruciferous vegetables, and it is sold as a supplement mainly for hormone balance and...

3,3'-Diindolylmethane monograph & interactions

Longjack extract

Interacts with
249 drugs
300 mg per serving

Eurycoma longifolia (tongkat ali) is a Southeast Asian herb most popular for supporting testosterone, libido, and male fertility, with some small huma...

Longjack extract monograph & interactions

Calcium

Interacts with
168 drugs
138 mg per serving Form: Calcium D-Glucarate, Dicalcium Phosphate

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet f...

Calcium monograph & interactions

Akarkara extract

No known
interactions
1500 mg per serving

Pellitory (often Anacyclus pyrethrum, the root traditionally called 'pellitory of Spain') is an herb chiefly known in folk and traditional medicine fo...

Akarkara extract monograph & interactions

Fenugreek extract

Interacts with
389 drugs
1000 mg per serving Form: Saponins

Fenugreek is a common kitchen spice that is also taken as a supplement, mainly for blood sugar, cholesterol, and to support breast milk production. So...

Fenugreek extract monograph & interactions

Fadogia agrestis powder

No known
interactions
1000 mg per serving

Fadogia agrestis is a West African shrub marketed as a testosterone booster, but human evidence is essentially nonexistent and what we know comes most...

Fadogia agrestis powder monograph & interactions

Bulbine natalensis powder

Interacts with
920 drugs
500 mg per serving

Bulbine natalensis is a South African plant marketed mainly as a testosterone-boosting and libido supplement, but the human evidence is essentially ab...

Bulbine natalensis powder monograph & interactions

Luteolin

50 mg per serving Form: Sophora japonica

Black Pepper extract

Interacts with
1,020 drugs
10 mg per serving

Black pepper is a common kitchen spice that is generally safe in the amounts used in food. Its extract, piperine, is mostly added to supplements to he...

Black Pepper extract monograph & interactions

Other (inactive) ingredients: Gelatin, Silicon Dioxide, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Black Ox Test Booster by EA Enhanced Drug Interactions

Want to check YOUR meds against Black Ox Test Booster?

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
1,314Drugs
24 Major 1,222 Moderate 68 Minor

Ingredients driving the most interactions

Black Pepper extract 1,020
Bulbine natalensis powder 920
Dehydroepiandrosterone 777
Fenugreek extract 389
Indole-3-Carbinol 294

Individual Drug Interactions

The ingredients in Black Ox Test Booster interact with 1,314 drugs. Click any drug to see the details.

9 of the 12 ingredients in Black Ox Test Booster interact with drugs. Each result below shows which ingredient is responsible. Black Pepper extract Bulbine natalensis powder Dehydroepiandrosterone Fenugreek extract Indole-3-Carbinol 3,3'-Diindolylmethane Longjack extract Mucuna pruriens extract Calcium

Each ingredient & the kinds of drugs it affects

For each ingredient in Black Ox Test Booster 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.

Black Pepper extract17 drug types · 1,020 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, black pepper might increase the risk of bleeding when taken with antiplatelet or anticoagulant drugs.
In vitro research shows that piperine, a constituent of black pepper, seems to inhibit platelet aggregation. This has not been reported in humans.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, black pepper might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research shows that piperine, a constituent of black pepper, can reduce blood glucose levels. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Atorvastatin (Lipitor)

Theoretically, black pepper might increase blood levels of atorvastatin.
Animal research shows that taking piperine, a constituent of black pepper, 35 mg/kg can increase the maximum serum concentration of atorvastatin three-fold. This has not been reported in humans.

Likelihood Possible Evidence D
Cyclosporine (Neoral, Sandimmune)

Theoretically, black pepper might increase the effects and side effects of cyclosporine.
In vitro research shows that piperine, a constituent of black pepper, increases the bioavailability of cyclosporine. This has not been reported in humans.

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

Theoretically, black pepper might increase levels of drugs metabolized by CYP2D6.
In vitro research suggests that some constituents of black pepper inhibit CYP2D6. This has not been reported in humans.

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

Theoretically, black pepper might increase levels of drugs metabolized by CYP3A4.
In vitro research and pharmacokinetic simulation data suggest that piperine, a constituent of black pepper, as well as the pepper fruit seem to inhibit CYP3A4. This has not been reported in humans.

Likelihood Possible Evidence D
Lithium

Theoretically, black pepper might increase blood levels of lithium due to its diuretic effects. The dose of lithium might need to be reduced.
Black pepper is thought to have diuretic properties.

Likelihood Probable Evidence D
Nevirapine (Viramune)

Black pepper might increase blood levels of nevirapine.
Clinical research shows that piperine, a constituent of black pepper, increases the plasma concentration of nevirapine. However, no adverse effects were observed in this study.

Likelihood Probable Evidence D
P-Glycoprotein Substrates

Theoretically, black pepper might increase levels of P-glycoprotein substrates.
In vitro research shows that piperine, a constituent of black pepper, seems to inhibit P-glycoprotein.

Likelihood Possible Evidence D
Pentobarbital (Nembutal)

Theoretically, black pepper might increase the sedative effects of pentobarbital.
Animal research shows that piperine, a constituent of black pepper, increases pentobarbital-induced sleeping time.

Likelihood Possible Evidence D
Phenytoin (Dilantin)

Black pepper might increase blood levels of phenytoin.
Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption, slow elimination, and increase levels of phenytoin. Taking a single dose of black pepper 1 gram along with phenytoin seems to double the serum concentration of phenytoin. Consuming a soup with black pepper providing piperine 44 mg/200 mL of soup along with phenytoin also seems to increase phenytoin levels when compared with consuming the same soup without black pepper.

Likelihood Possible Evidence B
Propranolol (Inderal)

Black pepper might increase blood levels of propranolol.
Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and slow elimination of propranolol.

Likelihood Possible Evidence B
Rifampin (Rifadin)

Black pepper might increase blood levels of rifampin.
Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and serum levels of rifampin.

Likelihood Possible Evidence B
Theophylline

Black pepper might increase blood levels of theophylline.
Clinical research shows that piperine, a constituent of black pepper, seems to increase absorption and slow elimination of theophylline.

Likelihood Possible Evidence D
Amoxicillin (Amoxil, Trimox)

Theoretically, black pepper might increase the effects and side effects of amoxicillin.
Animal research shows that taking piperine, a constituent of black pepper, with amoxicillin increases plasma levels of amoxicillin. This has not been reported in humans.

Likelihood Possible Evidence D
Carbamazepine (Tegretol)

Theoretically, black pepper might increase blood levels of carbamazepine, potentially increasing the effects and side effects of carbamazepine.
One clinical study in patients taking carbamazepine 300 mg or 500 mg twice daily shows that taking a single 20 mg dose of purified piperine, a constituent of black pepper, increases carbamazepine levels. Piperine may increase carbamazepine absorption by increasing blood flow to the GI tract, increasing the surface area of the small intestine, or inhibiting cytochrome P450 3A4 (CYP3A4) in the gut wall. Absorption was significantly increased by 7-10 mcg/mL/hour. The time to eliminate carbamazepine was also increased by 4-8 hours. Although carbamazepine levels were increased, this did not appear to increase side effects. In vitro research also shows that piperine can increase carbamazepine levels by 11% in a time-dependent manner.

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

Theoretically, black pepper might decrease levels and clinical effects of drugs metabolized by CYP1A2.
In vitro research suggests that black pepper induces CYP1A2. This has not been reported in humans.

Likelihood Possible Evidence D
Black Pepper extract full monograph & interactions

Bulbine natalensis powder7 drug types · 920 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, combining Bulbine natalensis leaf with drugs that have anticoagulant or antiplatelet activity might increase the risk of bruising and bleeding.
In vitro research shows that Bulbine natalensis ground leaf extract inhibits platelet aggregation.

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

Theoretically, Bulbine natalensis stem might reduce the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that Bulbine natalensis stem extract slightly induces CYP1A2 mRNA expression and enzyme activity. Theoretically, this may increase the metabolism of CYP1A2 substrates; however, this has not been studied in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, Bulbine natalensis stem might reduce the levels and clinical effects of CYP2C9 substrates.
In vitro research shows that Bulbine natalensis stem extract induces CYP2C9 mRNA expression and enzyme activity. Theoretically, this may increase the metabolism of CYP2C9 substrates; however, this has not been studied in humans.

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

Theoretically, Bulbine natalensis stem might reduce the levels and clinical effects of CYP3A4 substrates.
In vitro research shows that Bulbine natalensis stem extract induces CYP3A4 mRNA expression and enzyme activity. Theoretically, this may increase the metabolism of CYP3A4 substrates, but this has not been studied in humans.

Likelihood Possible Evidence D
Digoxin (Lanoxin)

Theoretically, Bulbine natalensis stem might increase the risk of adverse effects and toxicity when taken with digoxin.
Bulbine natalensis stem may contain cardiac glycosides, although it is unclear if these chemicals are present in clinically relevant concentrations.

Likelihood Possible Evidence D
P-Glycoprotein Substrates

Theoretically, Bulbine natalensis stem might increase the levels and clinical effects of p-glycoprotein substrates.
In vitro research shows that Bulbine natalensis stem extract induces p-glycoprotein mRNA expression; however, effects on transporter expression were not evaluated.

Likelihood Possible Evidence D
Testosterone

Theoretically, using Bulbine natalensis stem with testosterone replacement therapy might increase the risk of adverse effects.
Animal research shows that Bulbine natalensis stem can increase testosterone levels.

Likelihood Possible Evidence D
Bulbine natalensis powder full monograph & interactions

Dehydroepiandrosterone10 drug types · 777 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, DHEA might increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Human and laboratory research show that DHEA and DHEA-S can inhibit platelet aggregation.

Likelihood Possible Evidence D
Antidepressant Drugs

Theoretically, DHEA might increase the risk of psychiatric adverse events when used with antidepressants.
In a human case report, the use of a selective serotonin reuptake inhibitor (SSRI) with DHEA caused a manic episode. Concern for this interaction may be greater in younger individuals with higher baseline DHEA levels.

Likelihood Possible Evidence D
Aromatase Inhibitors

Theoretically, DHEA might interfere with the clinical effects of aromatase inhibitors.
DHEA is a potent estrogen agonist, which may antagonize the anti-estrogen activity of aromatase inhibitors.

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

Theoretically, DHEA might increase the levels of drugs metabolized by CYP3A4.
Some preliminary evidence shows that DHEA may inhibit CYP3A4; however, the clinical significance of this potential interaction is not known.

Likelihood Possible Evidence D
Fulvestrant (Faslodex)

Theoretically, DHEA might interfere with the anti-estrogen effects of fulvestrant.
DHEA is a potent estrogen agonist. Some research shows that it can overcome the estrogen receptor antagonist action of fulvestrant in estrogen-receptor positive cancer cells.

Likelihood Possible Evidence D
Tamoxifen (Nolvadex)

Theoretically, DHEA might interfere with the anti-estrogen effects of tamoxifen.
DHEA is a potent estrogen agonist. Some research shows that it can overcome the estrogen receptor antagonist activity of tamoxifen in estrogen-receptor positive cancer cells.

Likelihood Possible Evidence D
Triazolam (Halcion)

DHEA can increase blood levels of triazolam.
Administration of DHEA 200 mg daily for two weeks was shown to inhibit the cytochrome P450 3A4 (CYP3A4) metabolism of triazolam. This inhibition appears to be due to DHEA-S, rather than DHEA.

Likelihood Probable Evidence D
Tuberculosis Vaccine

DHEA might reduce the effectiveness of the tuberculosis vaccine.
Animal research shows that high doses of DHEA can reduce the efficacy of the Bacillus Calmette-Guérin (BCG) tuberculosis vaccine.

Likelihood Possible Evidence D
Estrogens

Theoretically, DHEA might increase the effects and adverse effects of estrogen therapy.
DHEA is a precursor to estrogen and androgen and is metabolized into those substances. In clinical research, DHEA supplements increase the levels of these hormones. Also, in clinical research, estrogen-progestin oral contraceptives and conjugated estrogens reduce blood levels of DHEA and DHEA-S. The clinical significance of these findings is unclear.

Likelihood Possible Evidence D
Testosterone

Theoretically, DHEA might increase the effects and side effects of testosterone therapy.
DHEA is a precursor to estrogen and androgen and is metabolized into those substances. In clinical research, DHEA supplements increase the levels of these hormones. The clinical significance of these findings is unclear.

Likelihood Possible Evidence D
Dehydroepiandrosterone full monograph & interactions

Fenugreek extract9 drug types · 389 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, fenugreek might have additive effects when used with anticoagulant or antiplatelet drugs.
Some of the constituents in fenugreek have antiplatelet effects in animal and in vitro research. However, common fenugreek products might not contain sufficient concentrations of these constituents for clinical effects. A clinical study in patients with coronary artery disease or diabetes shows that taking fenugreek seed powder 2.5 grams twice daily for 3 months does not affect platelet aggregation, fibrinolytic activity, or fibrinogen levels .

Likelihood Unlikely Evidence B
Antidiabetes Drugs

Theoretically, fenugreek seed might have additive hypoglycemic effects when used with antidiabetes drugs.
Clinical research shows that fenugreek seed can reduce fasting blood glucose and 2-hour postprandial glucose levels in adults with type 2 diabetes.

Likelihood Probable Evidence B
Clopidogrel (Plavix)

Theoretically, fenugreek seed might alter the clinical effects of clopidogrel by inhibiting its conversion to the active form.
Animal research shows that fenugreek seed 200 mg/kg daily for 14 days increases the maximum serum concentration of clopidogrel by 21%. It is unclear how this affects the pharmacokinetics of the active metabolite of clopidogrel; however, this study found that concomitant use of fenugreek seed and clopidogrel prolonged bleeding time by an additional 11%.

Likelihood Possible Evidence D
Metoprolol (Toprol)

Theoretically, fenugreek seed might have additive hypotensive effects when used with metoprolol.
Animal research shows that fenugreek seed 300 mg/kg daily for 2 weeks decreases systolic and diastolic blood pressure by 9% and 11%, respectively, when administered alone, and by 15% and 22%, respectively, when given with metoprolol 10 mg/kg.

Likelihood Probable Evidence B
Phenytoin (Dilantin)

Theoretically, fenugreek might decrease plasma levels of phenytoin.
Animal research shows that taking fenugreek seeds for 1 week decreases maximum concentrations and the area under the curve of a single dose of phenytoin by 44% and 72%, respectively. This seems to be related to increased clearance. So far, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Sildenafil (Viagra)

Theoretically, concurrent use of sildenafil and fenugreek might reduce levels and therapeutic effects of sildenafil.
Animal research shows that taking fenugreek seeds for 1 week reduces maximum concentrations and the area under the curve of a single dose of sildenafil by 27% and 48%, respectively. So far, this interaction has not been reported in humans.

Likelihood Possible Evidence D
Theophylline

Theoretically, fenugreek may reduce the levels and clinical effects of theophylline.
Animal research shows that fenugreek 50 grams daily for 7 days reduces the maximum serum concentration (Cmax) of theophylline by 28% and the area under the plasma drug concentration-time curve (AUC) by 22%.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, fenugreek might have additive effects with warfarin and increase the international normalized ratio (INR).
Some fenugreek constituents have antiplatelet effects, although these might not be present in concentrations that are clinically significant. In one case report, a patient taking warfarin experienced an increased INR when starting to take fenugreek in combination with boldo.

Likelihood Possible Evidence D
Antihypertensive Drugs

Fenugreek may also have an additive effect on blood pressure-lowering medications. Studies on animals have shown that fenugreek seed can decrease both systolic and diastolic blood pressure by up to 22% when combined with metoprolol. Therefore, it is essential to monitor your blood pressure regularly if you are taking fenugreek and metoprolol together or any other antihypertensive drugs.

Likelihood Possible Evidence C
Fenugreek extract full monograph & interactions

Indole-3-Carbinol3 drug types · 294 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, indole-3-carbinol might increase the risk of bleeding when used with antiplatelet or anticoagulant drugs.
In vitro research shows that indole-3-carbinol inhibits platelet aggregation.

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

Theoretically, indole-3-carbinol might increase the metabolism of CYP1A2 substrates and lower serum concentrations.
Animal research shows that indole-3-carbinol induces CYP1A2 enzymes.

Likelihood Possible Evidence D
Estrogens

Indole-3-carbinol might interfere with the effects of estrogen therapy.
Preliminary clinical and in vitro evidence shows that indole-3-carbinol has antiestrogenic activity.

Likelihood Possible Evidence D
Indole-3-Carbinol full monograph & interactions

3,3'-Diindolylmethane3 drug types · 269 drugs

Diuretic Drugs

Theoretically, diindolylmethane might increase the risk of hyponatremia if used with sodium-depleting diuretics.
Large doses of diindolylmethane (600 mg daily) have been associated with two cases of asymptomatic hyponatremia in clinical research.

Likelihood Possible Evidence B
Estrogens

Theoretically, diindolylmethane might increase or decrease the effects of estrogens.
Diindolylmethane might have mild estrogenic or antiestrogenic effects. Theoretically, large amounts of diindolylmethane might interfere with hormone replacement therapy.

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

Theoretically, diindolylmethane might lower serum levels of CYP1A2 substrates.
In vitro evidence suggests that diindolylmethane can induce CYP1A2. Theoretically, it might increase metabolism of CYP1A2 substrates and lower serum concentrations. This interaction has not been reported in humans.

Likelihood Unlikely Evidence D
3,3'-Diindolylmethane full monograph & interactions

Longjack extract5 drug types · 249 drugs

Propranolol (Inderal)

Eurycoma longifolia can reduce the levels and clinical effects of propranolol.
A small clinical study in healthy persons shows that taking a single dose of a water-based Eurycoma longifolia extract 200 mg, in combination with a single dose of propranolol 80 mg, reduces the propranolol area under the curve (AUC) by 29%, reduces the peak concentration by 42%, and increases time to peak concentration by 86% when compared with control. Since the elimination half-life of propranolol did not change, it seems that Eurycoma longifolia alters the kinetics of propranolol by decreasing its absorption in the gut, and not by altering its metabolism. It is not known if separating administration will prevent this interaction.

Likelihood Probable Evidence A
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, Eurycoma longifolia might increase levels CYP1A2 substrates.
In vitro research suggests that methanolic Eurycoma longifolia root extract weakly inhibits CYP1A2 enzymes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2A6 (Cyp2A6) Substrates

Theoretically, Eurycoma longifolia might increase levels of CYP2A6 substrates.
In vitro research suggests that methanolic Eurycoma longifolia root extract weakly inhibits CYP2A6 enzymes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, Eurycoma longifolia might increase levels of CYP2C19 substrates.
In vitro research suggests that methanolic Eurycoma longifolia root extract weakly inhibits CYP2C19 enzymes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Testosterone

Theoretically, Eurycoma longifolia may further increase levels of testosterone.
A clinical study in aging males with testosterone levels below 300 ng/dL shows that taking a specific water extract of Eurycoma longifolia roots (Physta; Biotropics Malaysia) 100-200 mg daily with breakfast for 12 weeks increases total testosterone levels by 8% to 11% when compared with placebo. It is unclear whether this increase would occur in individuals with normal testosterone levels.

Likelihood Possible Evidence D
Longjack extract full monograph & interactions

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

Calcium18 drug types · 168 drugs

Ceftriaxone (Rocephin)

Co-administration of intravenous calcium and ceftriaxone can result in precipitation of a ceftriaxone-calcium salt in the lungs and kidneys.
Avoid administering intravenous calcium in any form, such as parenteral nutrition or Lactated Ringers, within 48 hours of intravenous ceftriaxone. Case reports in neonates show that administering intravenous ceftriaxone and calcium can result in precipitation of a ceftriaxone-calcium salt in the lungs and kidneys. In several cases, neonates have died as a result of this interaction. So far there are no reports in adults; however, there is still concern that this interaction might occur in adults.

Likelihood Probable Evidence D
Dolutegravir (Tivicay)

Calcium seems to reduce levels of dolutegravir.
Advise patients to take dolutegravir either 2 hours before or 6 hours after taking calcium supplements. Pharmacokinetic research suggests that taking calcium carbonate 1200 mg concomitantly with dolutegravir 50 mg reduces plasma levels of dolutegravir by almost 40%. Calcium appears to decrease levels of dolutegravir through chelation.

Likelihood Probable Evidence B
Elvitegravir (Vitekta)

Calcium seems to reduce levels of elvitegravir.
Advise patients to take elvitegravir either 2 hours before or 2 hours after taking calcium supplements. Pharmacokinetic research suggests that taking calcium along with elvitegravir can reduce blood levels of elvitegravir through chelation.

Likelihood Probable Evidence B
Aluminum

Calcium citrate might increase aluminum absorption and toxicity. Other types of calcium do not increase aluminum absorption.
Calcium citrate can increase the absorption of aluminum when taken with aluminum hydroxide. The increase in aluminum levels may become toxic, particularly in individuals with kidney disease. However, the effect of calcium citrate on aluminum absorption is due to the citrate anion rather than calcium cation. Calcium acetate does not appear to increase aluminum absorption.

Likelihood Possible Evidence B
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)

Calcium might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption when taken in a fasting state.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide and calcium can be taken together if taken with food. However, if taken on an empty stomach, bictegravir/emtricitabine/tenofovir alafenamide should not be taken with, or 2 hours after, calcium containing products.

Likelihood Probable Evidence D
Bisphosphonates

Calcium reduces the absorption of bisphosphonates.
Advise patients to take bisphosphonates at least 30 minutes before calcium, but preferably at a different time of day. Calcium supplements decrease absorption of bisphosphonates.

Likelihood Probable Evidence C
Calcipotriene (Dovonex)

Taking calcipotriene with calcium might increase the risk for hypercalcemia.
Calcipotriene is a vitamin D analog used topically for psoriasis. It can be absorbed in sufficient amounts to cause systemic effects, including hypercalcemia. Theoretically, combining calcipotriene with calcium supplements might increase the risk of hypercalcemia.

Likelihood Possible Evidence B
Digoxin (Lanoxin)

Using intravenous calcium with digoxin might increase the risk of fatal cardiac arrhythmias.
Hypercalcemia increases the risk of fatal cardiac arrhythmias with digoxin. However, one retrospective analysis of clinical data suggests that intravenous calcium does not increase the risk of dysrhythmias or mortality in patients receiving digoxin.

Likelihood Possible Evidence B
Diltiazem (Cardizem, Others)

Theoretically, calcium may reduce the therapeutic effects of diltiazem.
Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically, calcium might increase this risk of hypercalcemia and reduce the effectiveness of diltiazem.

Likelihood Probable Evidence D
Levothyroxine (Synthroid, Others)

Calcium seems to reduce the absorption and effectiveness of levothyroxine.
Advise patients to take levothyroxine and calcium supplements at least 4 hours apart. Calcium reduces levothyroxine absorption, probably by forming insoluble complexes. Calcium carbonate supplements reduce effectiveness of levothyroxine in patients with hypothyroidism.

Likelihood Probable Evidence B
Lithium

Theoretically, concomitant use of calcium and lithium may increase this risk of hypercalcemia.
Clinical research suggests that long-term use of lithium may cause hypercalcemia in 10% to 60% of patients. Theoretically, concomitant use of lithium and calcium supplements may further increase this risk.

Likelihood Possible Evidence B
Quinolone Antibiotics

Calcium seems to reduce the absorption of quinolone antibiotics.
Advise patients to take oral quinolones at least 2 hours before or 4-6 hours after calcium supplements or calcium-fortified foods. Taking calcium at the same time as oral quinolones can reduce quinolone absorption. Calcium binds to quinolones in the gut.

Likelihood Probable Evidence B
Raltegravir (Isentress)

Calcium may reduce levels of raltegravir.
Pharmacokinetic research shows that taking a single dose of calcium carbonate 3000 mg along with raltegravir 400 mg twice daily modestly decreases the mean area under the curve of raltegravir, but the decrease does not necessitate a dose adjustment of raltegravir. However, a case of elevated HIV-1 RNA levels and documented resistance to raltegravir has been reported for a patient taking calcium carbonate 1 gram three times daily plus vitamin D3 (cholecalciferol) 400 IU three times daily in combination with raltegravir 400 mg twice daily for 11 months. It is thought that calcium reduced raltegravir levels by chelation, leading to treatment failure.

Likelihood Possible Evidence B
Sotalol (Betapace)

Calcium seems to reduce the absorption of sotalol.
Advise patients to separate doses by at least 2 hours before or 4-6 hours after calcium. Calcium appears to reduce the absorption of sotalol, probably by forming insoluble complexes.

Likelihood Possible Evidence B
Tetracycline Antibiotics

Calcium seems to reduce the absorption of tetracycline antibiotics.
Advise patients to take oral tetracyclines at least 2 hours before, or 4-6 hours after calcium supplements. Taking calcium at the same time as oral tetracyclines can reduce tetracycline absorption. Calcium binds to tetracyclines in the gut.

Likelihood Probable Evidence C
Thiazide Diuretics

Taking calcium along with thiazides might increase the risk of hypercalcemia and renal failure.
Thiazides reduce calcium excretion by the kidneys. Using thiazides along with moderately large amounts of calcium carbonate increases the risk of milk-alkali syndrome (hypercalcemia, metabolic alkalosis, renal failure). Patients may need to have their serum calcium levels and/or parathyroid function monitored regularly.

Likelihood Probable Evidence C
Verapamil (Calan, Others)

Theoretically, calcium may reduce the therapeutic effects of verapamil.
Hypercalcemia can reduce the effectiveness of verapamil in atrial fibrillation. Theoretically, use of calcium supplements may increase this risk of hypercalcemia and reduce the effectiveness of verapamil.

Likelihood Probable Evidence D
Calcium Channel Blockers

Intravenous calcium may decrease the effects of calcium channel blockers; oral calcium is unlikely to have this effect.
Intravenous calcium is used to decrease the effects of calcium channel blockers in the management of overdose. Intravenous calcium gluconate has been used before intravenous verapamil (Isoptin) to prevent or reduce the hypotensive effects without affecting the antiarrhythmic effects. But there is no evidence that dietary or supplemental calcium when taken orally interacts with calcium channel blockers.

Likelihood Unlikely Evidence D
Calcium full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Black Ox Test Booster, from the product label.

EA Enhanced

See all EA Enhanced products
Name
Enhanced Labs
Street Address
P.O. Box 255671
City
Sacramento
State
CA
ZipCode
95865
Web Address
getenhanced.shop
Pharmacist Counseling Corner

Black Ox Test Booster by EA Enhanced: Common Questions

Does Black Ox Test Booster by EA Enhanced interact with any medications?
Yes. Based on its ingredients, Black Ox Test Booster has a known interaction with 1,314 medications, including 24 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Black Ox Test Booster contains 12 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.
Can I take this if I'm on blood thinners like warfarin?
No—several ingredients here interact with blood thinners and antiplatelet drugs at Moderate severity, raising the risk of bleeding. Talk to your doctor or pharmacist before using this product if you take warfarin, aspirin, clopidogrel, or other blood thinners.
Is it safe to use during pregnancy or while breastfeeding?
No. The hormonal ingredients (DHEA, Mucuna pruriens, fenugreek, Longjack, Bulbine) are unsafe or lack sufficient safety data in pregnancy and lactation. If you're pregnant, planning pregnancy, or breastfeeding, avoid this product and speak with your OB/GYN or pharmacist.
What are the most common side effects?
Indole-3-carbinol and diindolylmethane may cause diarrhea, nausea, and headache. DHEA often causes acne, headache, and insomnia. Fenugreek may trigger abdominal pain and bloating. Mucuna prurensis can cause flatulence and diarrhea. Most are mild and tolerable at lower doses, but talk to your pharmacist if you experience persistent symptoms.
Does fenugreek really boost sexual function?
Fenugreek extract is listed as possibly effective for sexual dysfunction and sexual arousal in our data, but the evidence isn't conclusive. Results vary by individual and study design.
I'm on phenytoin for seizures—can I use this?
No. Both black pepper extract and fenugreek can increase phenytoin levels at Moderate severity, raising the risk of toxicity. Avoid this product if you take seizure medication and consult your neurologist.
What's DHEA, and why is it in a test-boosting formula?
DHEA is a hormone precursor your body converts to testosterone and estrogen. It's included because animal and clinical research suggests it may increase testosterone in aging men with low levels. However, DHEA is a potent hormone and should only be used under medical supervision.

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.

Black Ox Test Booster label
Go deeper

The Full Monographs Behind Black Ox Test Booster’s Ingredients

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

Herb & supplement monograph

Indole-3-carbinol

Interacts with 294 drugs

Indole-3-carbinol (I3C) is a compound formed when you eat cruciferous vegetables like broccoli and cabbage, and it is sold as a supplement mainly for hormone-related and cell-protective effe...

Read the full Indole-3-carbinol monograph → Herb & supplement monograph

Dhea

Interacts with 777 drugs

DHEA is a natural hormone that the body makes and that declines with age, and it is sold as a supplement claiming many benefits. The evidence is mixed and limited for most uses, and because...

Read the full Dhea monograph → 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 → Herb & supplement monograph

Diindolylmethane

Interacts with 269 drugs

Diindolylmethane (DIM) is a compound made when your body digests cruciferous vegetables, and it is sold as a supplement mainly for hormone balance and cancer prevention. Although early lab s...

Read the full Diindolylmethane monograph → Herb & supplement monograph

Eurycoma Longifolia

Interacts with 249 drugs

Eurycoma longifolia (tongkat ali) is a Southeast Asian herb most popular for supporting testosterone, libido, and male fertility, with some small human studies suggesting possible benefits....

Read the full Eurycoma Longifolia monograph → Herb & supplement monograph

Calcium

Interacts with 168 drugs

Calcium is an essential mineral your body needs for strong bones, nerve signaling, and muscle function, and supplements can help fill gaps when diet falls short. Most people do best getting...

Read the full Calcium monograph → Herb & supplement monograph

Pellitory

Pellitory (often Anacyclus pyrethrum, the root traditionally called 'pellitory of Spain') is an herb chiefly known in folk and traditional medicine for numbing toothache and stimulating sali...

Read the full Pellitory monograph → Herb & supplement monograph

Fenugreek

Interacts with 389 drugs

Fenugreek is a common kitchen spice that is also taken as a supplement, mainly for blood sugar, cholesterol, and to support breast milk production. Some early research is encouraging for blo...

Read the full Fenugreek monograph → Herb & supplement monograph

Fadogia Agrestis

Fadogia agrestis is a West African shrub marketed as a testosterone booster, but human evidence is essentially nonexistent and what we know comes mostly from a few small rat studies. Animal...

Read the full Fadogia Agrestis monograph → Herb & supplement monograph

Bulbine Natalensis

Interacts with 920 drugs

Bulbine natalensis is a South African plant marketed mainly as a testosterone-boosting and libido supplement, but the human evidence is essentially absent and most claims come from animal st...

Read the full Bulbine Natalensis monograph → Herb & supplement monograph

Black Pepper

Interacts with 1,020 drugs

Black pepper is a common kitchen spice that is generally safe in the amounts used in food. Its extract, piperine, is mostly added to supplements to help the body absorb other ingredients (li...

Read the full Black Pepper monograph →
Sources

Sources & How We Checked

Black Ox Test Booster'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 269 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.

Indole-3-carbinol 9 references
  1. Rosen CA, Woodson GE, Thompson JW, et al. Preliminary results of the use of indole-3-carbinol for recurrent respiratory papillomatosis. Otolaryngol Head Neck Surg 1998;118:810-5. PubMed
  2. Bell MC, Crowley-Nowick P, Bradlow HL, et al. Placebo-controlled trial of indole-3-carbinol in the treatment of CIN. Gynecol Oncol 2000;78:123-9. PubMed
  3. He YH, Friesen MD, Ruch RJ, Schut HA. Indole-3-carbinol as a chemopreventive agent in 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) carcinogenesis: inhibition of PhIP-DNA adduct formation, acceleration of PhIP metabolism, and induction of cytoch
  4. Kim, Y. S. and Milner, J. A. Targets for indole-3-carbinol in cancer prevention. J.Nutr.Biochem. 2005;16(2):65-73. PubMed
  5. Anon. Indole-3-carbinol. Monograph. Alternative Medicine Review 2005;10(4):337-42.
  6. McAlindon TE, Gulin J, Chen T, et al. Indole-3-carbinol in women with SLE: effect on estrogen metabolism and disease activity. Lupus 2001;10:779-83. PubMed
  7. Reed GA, Peterson KS, Smith HJ, et al. A phase I study of indole-3-carbinol in women: tolerability and effects. Cancer Epidemiol Biomarkers Prev 2005;14:1953-60. PubMed
  8. Bradlow HL, Michnovicz JJ, Halper M, et al. Long-term responses of women to indole-3-carbinol or a high fiber diet. Cancer Epidemiol Biomarkers Prev 1994;3:591-5.
  9. Paliwal P, Chauhan G, Gautam D, Dash D, Patne SCU, Krishnamurthy S. Indole-3-carbinol improves neurobehavioral symptoms in a cerebral ischemic stroke model. Naunyn Schmiedebergs Arch Pharmacol. 2018;391(6):613-625. PubMed

See these in context on the Indole-3-carbinol monograph →

Dhea 98 references
  1. Frye RF, Kroboth PD, Folan MM, et al. Effect of DHEA on CYP3A-mediated metabolism of triazolam. Clin Pharmacol Ther 2000;67:109 (abstract PI-82).
  2. Kuritzky L. DHEA: Science or wishful thinking? Hosp Pract 1998;33:85-6. PubMed
  3. Van Vollenhoven RF, Morabito LM, Engleman EG, et al. Treatment of systemic lupus erythematosus with dehydroepiandrosterone: 50 patients treated up to 12 months. J Rheumatol 1998;25:285-9.
  4. Van Vollenhoven RF, Engleman EG, McGurie JL. Dehydroepiandrosterone in Systemic Lupus Erythematosus. Arth Rheum 1995;38:1826-31. DOI
  5. Ebeling P, Koivisto VA. Physiological importance of dehydroepiandrosterone. Lancet 1994;343:1479-81. PubMed
  6. Yen SS, Morales AJ, Khorram O. Replacement of DHEA in aging men and women. Potential remedial effects. Ann N Y Acad Sci 1995;774:128-42. PubMed
  7. Labrie F, Diamond P, Cusan L, et al. Effect of 12 month dehydroepiandrosterone replacement therapy on bone, vagina, and endometrium in postmenopausal women. J Clin Endocrinol Metab 1997;82:3498-505. PubMed
  8. Casson PR, Faquin LC, Stentz FB. Replacement of dehydroepiandrosterone enhances T-lymphocyte insulin binding in postmenopausal women. (abstract) Fertil Steril 1995;63:1027-31. DOI
  9. Morales AJ, Haubrich RH, Hwang JY, et al. The effect of six months treatment with a 100 mg daily dose of dehydroepiandrosterone (DHEA) on circulating sex steroids, body composition and muscle strength in age-advanced men and women. Clin Endocrinol (Oxf)1 PubMed
  10. Arlt W, Justl H, Callies F, et al. Oral dehydroepiandrosterone for adrenal androgen replacement: pharmacokinetics and peripheral conversion to androgens and estrogens in young healthy females after dexamethasone suppression. [Abstract] J Clin Endocrinol PubMed
  11. Kline MD, Jaggers ED. Mania onset while using dehydroepiandrosterone (letter). Am J Psychiatry 1999;156:971. PubMed
  12. Callies F, Arlt W, Siekmann L, et al. Influence of oral dehydroepiandrosterone (DHEA) on urinary steroid metabolites in males and females. Steroids 2000;65:98-102. PubMed
  13. Markowitz JS, Carson WH, Jackson CW. Possible dihydroepiandrosterone-induced mania. Biol Psychiatry 1999;45:241-2. PubMed
  14. Stoll BA. Dietary supplements of dehydroepiandrosterone in relation to breast cancer risk. Eur J Clin Nutr 1999;53:771-5. PubMed
  15. Dean CE. Prasterone (DHEA) and mania. Ann Pharmacother 2000;34:1419-22. PubMed
  16. Himmel PB, Seligman TM. A Pilot Study Employing Dehydroepiandrosterone (DHEA) in the Treatment of Chronic Fatigue Syndrome. [Abstract]. J Clin Rheumatol 1999:5:56-9. PubMed
  17. Hunt PJ, Gurnell EM, Huppert FA, et al. Improvement in mood and fatigue after dehydroepiandrosterone replacement in Addison's disease in a randomized, double blind trial. J Clin Endocrinol Metab 2000;85:4650-6.. PubMed
  18. Johannsson G, Burman P, Wiren L, et al. Low dose dehydroepiandrosterone affects behavior in hypopituitary androgen-deficient women: a placebo-controlled trial. J Clin Endocrinol Metab 2002;87:2046-52. PubMed
  19. Calhoun KE, Pommier RF, Muller P, et al. Dehydroepiandrosterone sulfate causes proliferation of estrogen receptor-positive breast cancer cells despite treatment with fulvestrant. Arch Surg 2003;138:879-83.. PubMed
  20. Morris KT, Toth-Fejel S, Schmidt J, et al. High dehydroepiandrosterone-sulfate predicts breast cancer progression during new aromatase inhibitor therapy and stimulates breast cancer cell growth in tissue culture: a renewed role for adrenalectomy. Surgery PubMed
  21. Calhoun K, Pommier R, Cheek J, et al. The effect of high dehydroepiandrosterone sulfate levels on tamoxifen blockade and breast cancer progression. Am J Surg 2003;185:411-5.. PubMed
  22. Stomati M, Monteleone P, Casarosa E, et al. Six-month oral dehydroepiandrosterone supplementation in early and late postmenopause. Gynecol Endocrinol 2000;14:342-63.. PubMed
  23. Petri MA, Mease PJ, Merrill JT, et al. Effects of prasterone on disease activity and symptoms in women with active systemic lupus erythematosus. Arthritis Rheum 2004;50:2858-68. PubMed
  24. Villareal DT, Holloszy JO, Kohrt WM. Effects of DHEA replacement on bone mineral density and body composition in elderly women and men. Clin Endocrinol (Oxf) 2000;53:561-8. PubMed
  25. Acacio BD, Stanczyk FZ, Mullin P, et al. Pharmacokinetics of dehydroepiandrosterone and its metabolites after long-term daily oral administration to healthy young men. Fertil Steril 2004;81:595-604. PubMed
  26. Petri MA, Lahita RG, Van Vollenhoven RF, et al. Effects of prasterone on corticosteroid requirements of women with systemic lupus erythematosus: a double-blind, randomized, placebo-controlled trial. Arthritis Rheum 2002;46:1820-9. PubMed
  27. Pino JA, Marbot R. Volatile flavor constituents of acerola (Malpighia emarginata DC.) fruit. J Agric Food Chem 2001;49:5880-2.
  28. Nair KS, Rizza RA, O'Brien P, et al. DHEA in elderly women and DHEA or testosterone in elderly men. N Engl J Med 2006;355:1647-59. PubMed
  29. Alkatib AA, Cosma M, Elamin MB, et al. A systematic review and meta-analysis of randomized placebo-controlled trials of DHEA treatment effects on quality of life in women with adrenal insufficiency. J Clin Endocrinol Metab 2009;94:3676-81. PubMed
  30. Jesse, R. L., Loesser, K., Eich, D. M., Qian, Y. Z., Hess, M. L., Nestler, J. E. Dehydroepiandrosterone inhibits human platelet aggregation in vitro and in vivo. Ann N.Y.Acad Sci 1995;774:281-90.
  31. Bertoni, A., Rastoldo, A., Sarasso, C., Di Vito C., Sampietro, S., Nalin, M., Bagarotti, A., Sinigaglia, F. Dehydroepiandrosterone-sulfate inhibits thrombin-induced platelet aggregation. Steroids 2012;77(3):260-8. PubMed
  32. Cui, Y., Choi, I. S., Koh, Y. A., Lin, X. H., Cho, Y. B., Won, Y. H. Effects of combined BCG and DHEA treatment in preventing the development of asthma. Immunol Invest 2008;37(3):191-202. PubMed
  33. Aisaka, K., Mori, H., Ogawa, T., Kigawa, T. Effects of dehydroepiandrosterone-sulphate (DHEA-S) administration on puerperal lactation and maternal prolactin and estradiol levels. Nippon Sanka Fujinka Gakkai Zasshi 1984;36(10):1935-42.
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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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