🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

3 Tablet(s) Serving Size
30 Servings
Other Combinations Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

800 IU (200% DV)
✅ 1.3× RDA — within safe limits 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.02mg UL 0.1mg
7.5 mg (50% DV)
✅ Within RDA (0.7× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 7.5mg UL 40mg
Testosterone Support Matrix
Musclebuilding Complex

Other Ingredients

Microcrystalline Cellulose Dicalcium Phosphate Coating Croscarmellose Sodium Stearic Acid Silicon Dioxide Magnesium Stearate

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (85% of products) Nutrient (70% of products) Approved Health (4% of products)

Target Groups

Adult (18 - 50 Years) Women (not pregnant or lactating)

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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Product Details

UPC / SKU 6 31656 60950 9
DSLD Entry Date 2021-10-22
Product Type Other Combinations
Form Tablet or Pill
Brand MuscleTech
DSLD ID 255869
Data Updated 2026-04-11

Research Evidence

872 Research Sources
53 Avg Quality Score
309 Meta Analysis
309 Clinical Trial
111 Rct
71 Systematic Review
55 Guideline
4 Cochrane Review
4 Regulatory Source
2 Other
2 Narrative Review
2 Observational
1 Openfda Safety
A Vitamin D and vitamin D analogues for preventing fractures associated with involutional and post-menopausal osteoporosis
Meta Analysis The Cochrane database of systematic reviews 2009
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2014
A Vitamin D and vitamin D analogues for preventing fractures in post-menopausal women and older men
Meta Analysis The Cochrane database of systematic reviews 2014
A Vitamin D supplementation for prevention of cancer in adults
Meta Analysis The Cochrane database of systematic reviews 2014
A Interventions for preventing falls in older people in care facilities and hospitals
Meta Analysis The Cochrane database of systematic reviews 2018
A Drugs for preventing lung cancer in healthy people
Meta Analysis The Cochrane database of systematic reviews 2020
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2011
A High prevalence of vitamin D deficiency in Asia: A systematic review and meta-analysis
Meta Analysis Critical reviews in food science and nutrition 2023
A The effect of vitamin D supplementation on depressive symptoms in adults: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2023
A Interventions for preventing falls in older people living in the community
Meta Analysis The Cochrane database of systematic reviews 2009
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