BioStacks
Swanson

Mega Tribulus Extract

1 Capsule × 2/day · 60 servings · $0.07/serving

iHerbAmazon

Ingredients (2)

Tribulus Whole Herb and Fruit Extract

100%

Dose/day

500 mg

Target

250–1500 mg

Form

—

20% Sterodial Saponins

Amount not found

Other Ingredients (4)

Rice FlourFiller

Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

HypromelloseCapsule

Plant-derived capsule material from cellulose

How to Take It

Take it anytime

Timing doesn't matter for this one — taking it consistently does.

With or without food
Split into 2 doses across the day

On the label

As a dietary supplement, take one vegan capsule two to three times per day with food and water.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$4.29

$5$10$20

Cheaper than 99% of 22 tribulus terrestris supplements

Track this supplement in your stack

Get personalized insights, interactions, and coverage recommendations.

Get Started Free

Similar Supplements

Tribulus

Arazo Nutrition

Tribulus

45
Tribulus Terrestris 15000 mg

Horbäach

Tribulus Terrestris 15000 mg

45
Tribulus 1500 mg

Nutricost

Tribulus 1500 mg

45
Tribulus 1500mg

Nutricost

Tribulus 1500mg

45
Tribulus Extract

Double Wood Supplements

Tribulus Extract

43

Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

BioStacks

Know exactly what's in your supplements.

Navigate

  • Home
  • Manifesto
  • App Store
  • Google Play

Resources

  • Contact & Support
  • Pricing
  • Terms of Service
  • Privacy Policy
  • Refund Policy

Explore

  • Health Areas
  • Best Supplements
  • Nutrients
  • All Supplements

Popular Picks

  • Best Magnesium for Sleep
  • Best Collagen for Skin
  • Best Creatine for Muscle
  • Best Vitamin D for Bone Health
  • Best Probiotics for Digestion
  • Best CoQ10 for Heart

Free Tools

  • Interaction Checker
  • Dose Checker
  • Form Comparison

Field Guides

  • Magnesium for sleep
  • Reading labels
  • Interaction checker
  • Dose checker
  • Harmful ingredients
  • Proprietary blends
  • Stack building
  • Scan without barcode
  • All guides →
© 2026 BioStacks. All rights reserved. Not medical advice.