Test HD Lean Build Black Onyx
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 50% of ingredients have research evidence
What the Evidence Says
AI-generated · Qwen 3.6 · methodologyVitamin D and zinc are well-studied nutrients that support hormonal health and immune function. The testosterone support and musclebuilding complexes contain ingredients with limited clinical evidence regarding their efficacy in increasing muscle mass. Overall, the evidence coverage for this specific formulation is very low.
AI-generated summary based on research evidence. Not medical advice.
Product Label
Label Data
Supplement Facts — Evidence Check
Other Ingredients
Label Claims — Verification
Product Information
Directions for Use
Directions: Take 1 serving (3 tablets) once daily with water. Do not exceed 1 serving (3 tablets) in a 24-hour period. Read the entire label before use and follow directions provided.
Warnings & Precautions
Warning: For adult use only.
Do not use if pregnant or nursing.
Consult a medical doctor before starting any diet or exercise program or if you have a medical condition or taking any medication. Discontinue use two weeks prior to surgery.
Keep out of reach of children.
Do not use if packaging has been tampered with.
Not intended to treat low testosterone or sexual dysfunction.
Formulation Notes
New Test HD Lean Build Black Onyx is the most advanced 2-in-1, testosterone-enhancing and musclebuilding pill.
It’s built with multiple scientifically researched ingredients shown in four separate human clinical studies to boost free testosterone, enhance performance and build lean muscle.
Featuring researched doses of KSM-66 ashwagandha and boron shown in separate human clinical studies to promote total testosterone and boost free testosterone – most competitors have none!
Test HD Lean Build Black Onyx is also armed with maca, tribulus, safed musli and longjack, plus zinc to help support optimal testosterone production within the normal range.
Powerful musclebuilding & strength
Three ingredients make this a powerful performance enhancer: exclusive and patented Cindura, mTOR-activating PEAK ATP and clinically dosed KSM-66. Cindura has been clinically shown to support muscular strength, boost endurance and increase mass.
What’s more, researchers believe Cindura may help prevent muscle breakdown. In fact, in a 6-week clinical study, subjects taking the amount of Cindura found in 3 tablets of Test HD Lean Build Black Onyx significantly increased their muscular endurance by an average of 6.6 reps vs. just 2.2 reps by the placebo group when tested via leg extensions.
Testosterone performance strength
800 mg Cindura 400 mg Peak atp 600 mg KSM-66 250 mg Tribulus
Testosterone Test + muscle
Made in the U.S.A. from international ingredients
Additional Information
America's #1 selling weight loss supplement brand Research-backed weight loss ingredient. Full transparency. All power.
Scientifically researched testosterone enhancer
Free testosterone is the most active form of testosterone and is critical to initiating the muscle- and strength-building process.
Naghii et al., 2011. Journal of Trace Elements in Medicine and Biology. 25:54-58.
Check out the gold standard clinical studies below to see how Cindura, PEAK ATP and KSM-66 are clinically shown to enhance performance, boost strength or increase lean muscle. A Randomized, Double-Blind and Placebo-Controlled Study on Cindura, unpublished manuscript, 2015. Wilson et al., 2013. Nutrition & Metabolism. 10:57. Wankhede et al., 2015. Journal of the International Society of Sports Nutrition. 12:43.
Scientifically researched key ingredients MuscleTech research & development
Store in a cool, dry place (60 degrees F to 80 degrees F).
MuscleTech is America’s #1 Selling Bodybuilding Supplement Brand based on cumulative wholesale dollar sales 2001 to present.
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.