🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 25% of ingredients have research evidence
B Label Compliance Grade

Product Label

📸

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Label Data

2 Capsule(s) Serving Size
60 Servings
Other Combinations Product Type
25% Evidence Coverage

Supplement Facts — Evidence Check

📊 Market median: 180.0mg (239 products) 📚 43 studies (Tier A: 1, B: 19)
This product: 200mg UL 400mg
C. canephora robusta extract
200 mg
C. canephora robusta extract
200 mg
Coleus extract
100 mg
Theacrine
35 mg
75 mg
📊 Market median: 200.0mg (358 products) 📚 9 studies (Tier A: 0, B: 2)
This product: 75mg
50 mg
✅ Within RDA (0.1× RDA of 550 mg) 📚 36 studies (Tier A: 1, B: 7)
RDA 550mg This product: 50mg UL 3500mg
Rosemary
50 mg
flowering Quince
50 mg
Grains of Paradise extract
20 mg
Yohimbe extract
20 mg
Satsuma Mandarin concentrate
2 mg

Other Ingredients

Capsule Microcrystalline Cellulose Magnesium Stearate Silicon Dioxide

Label Claims — Verification

All Other
Structure/Function
All Other (98% of products) Structure/Function (93% of products) Nutrient (19% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: To assess your tolerance, refer to the chart below. Once your tolerance has been assessed, take 2 capsules twice daily, 30 to 60 minutes before your 2 largest meals (e.g. breakfast and lunch). Do not exceed 4 capsules in a 24-hour period. For best results, use for 60 days in combination with diet and training. Drink 8 to 10 glasses of water per day.

⚠️ Warnings & Precautions

Warning: Not intended for use by persons under 18.

Do not use if pregnant or nursing.

Discontinue use and consult a medical doctor if you experience unusual symptoms.

Consult a medical doctor before use if you have been treated for, diagnosed with or have a family history of any medical condition, or if you are using any prescription or over-the counter drug(s).

Consult a medical doctor before starting a diet or exercise program.

Caffeine-sensitive individuals may experience the following symptoms including (but not limited to) restlessness, nervousness, tremors, headache, anxiety, palpitations, increased heart rate or difficulty sleeping. Do not combine with other sources of caffeine or stimulants. Discontinue use 2 weeks prior to surgery. Do not use for more than 8 weeks. Do not use if you have heart, sleep or anxiety disorders. Do not exceed recommended serving. Improper use of this will product will not improve results and is not advised.

Use only as directed.

Keep out of reach of children.

Do not use if packaging has been tampered with.

🧪 Formulation Notes

Hydroxycut Black Onyx is the newest and most cutting-edge weight loss supplement engineered by MuscleTech®, with the scientifically tested weight loss ingredient C. canephora robusta, along with coleus, TeaCrine, choline, plus caffeine to unleash instant energy, enhanced mental focus and thermogenesis.

Advanced weight loss & thermogenesis Not only does Hydroxycut Black Onyx provide explosive energy and enhanced thermogenesis, our powerful formula also features a key weight loss ingredient backed by two human studies. In fact, subjects taking the precise dose of C. canephora robusta found in Hydroxycut Black Onyx lost an average of 10.95 lbs. (vs. 5.40 lbs. for the placebo) in 60 days with a low-calorie diet and 3.7 lbs. (vs. 1.25 lbs. for placebo) in 8 weeks with a calorie-reduced diet and moderate exercise.

Our formula gives you the instant kick of energy you are looking for, plus it’s the only formula that combines the key ingredients TeaCrine, coleus and satsuma for a unique sensory experience.

Weight loss

100 mg coleus 35 mg TeaCrine 75 mg L-theanine 50 mg Choline

Weight loss

One serving of this product contains up to as much caffeine as 2.5 cups of coffee.

Made in the U.S.A. from international ingredients.

Additional Information

America's #1 selling bodybuilding supplement brand Research-backed weight loss ingredient. Full transparency. All power.

That’s real weight loss you can trust! Ultimate neurosensory experience

Scientifically researched key ingredients MuscleTech research & development

Energy Focus

Extreme energy

Store in a cool, dry place (60 degrees F to 80 degrees F).

Based on AC Nielsen FDMx sales data for Hydroxycut caplets.

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Product Details

UPC / SKU 6 31656 60941 7
DSLD Entry Date 2021-10-22
Product Type Other Combinations
Form Capsule
Brand MuscleTech
DSLD ID 255855
Data Updated 2026-04-11

Research Evidence

82 Research Sources
51 Avg Quality Score
28 Rct
19 Meta Analysis
17 Clinical Trial
16 Systematic Review
A Preconception lifestyle advice for people with infertility
Meta Analysis The Cochrane database of systematic reviews 2021
B The effects of caffeine intake on weight loss: a systematic review and dos-response meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2019
B Effects of caffeine chewing gum supplementation on exercise performance: A systematic review and meta-analysis
Meta Analysis European journal of sport science 2023
B Genetic susceptibility to caffeine intake and metabolism: a systematic review
Systematic Review Journal of translational medicine 2024
B Pharmacological interventions for sleepiness and sleep disturbances caused by shift work
Meta Analysis The Cochrane database of systematic reviews 2014
B Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis
Meta Analysis Nutrients 2022
B The effects of green tea extract supplementation on body composition, obesity-related hormones and oxidative stress markers: a grade-assessed systematic review and dose-response meta-analysis of randomised controlled trials
Meta Analysis The British journal of nutrition 2024
B Effect of green tea catechins with or without caffeine on anthropometric measures: a systematic review and meta-analysis
Systematic Review The American journal of clinical nutrition 2010
B Caffeine, CYP1A2 Genotype, and Endurance Performance in Athletes
Rct Medicine and science in sports and exercise 2018
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010
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