Product Information




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 ingredients backed by two human studies

¹In fact, subjects taking the precise dose of C. canephora robusta found in HydroxyCut® Black Onxy® lost an average 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. That's real weight loos you can trust!^

Ultimate Neurosensory Experience -
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 unique sensory experience.^


  • Weight Loss^¹, Energy^, Focus^
  • 100mg coleus, 35mg TeaCrine®, 75mg L-theanine and 50mg choline per serving




Nutrition Facts
Serving Size  2 Capsule(s)
Servings Per Container  60

Amount Per Serving     % DV

Caffeine Anhydrous  200 mg   **
C. anephora robusta extract (robusta coffee)(bean) Standardized for 45% chlorogenic acids  200 mg   **
C. canephora robusta extract (robusta coffee)(bean) Standardized for 5% chlorogenic acids  200 mg   **
Coleus extract (as Coleus forskohlii)(root)  100 mg   **
Theacrine (as TeaCrine®)  35 mg   **
L-Theanine  75 mg   **
Choline (as Choline Bitartrate)  50 mg   **
Rosemary (as Rosmarinus officinalis)(leaf)  50 mg   **
Flowering quince (as Chaenomeles speciosa)(fruit)  50 mg   **
Grains of paradise extract (as Aframomum melegueta)(seed)  20 mg   **
Yohimbe extract (as Pausinystalia yohimbe)(bark) Standardized for 6% yohimbine  20 mg   **
Satsuma mandarin concentrate (as Citrus unshiu)(pulp) Supplying beta-cryptoxanthin  2 mg   **

** Daily Value (DV) not established.
Other Ingredients
Capsule (Gelatin, Titanium Dioxide), Microcrystalline Cellulose, Magnesium Stearate, Silicon Dioxide
Label (click image to enlarge)

How To Use

To asses you tolerance refer to the chart below. Once your tolerance has been assessed, take 2 capsules twice daily, 30-60 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.
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. One serving of this product contains up to as much caffeine as 2 cups of coffee. Caffeine-sensitive individual 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 his product will not improve results and is not advised. Use only as directed. KEEP OUT OF REACH OF CHILDREN.
^This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Store in a cool dry place.
Distributed by Iovate Health Sciences U.S.A. Inc. 1105 North Market Street, Suite 1330, Wilmington, DE 19801.


4.6 / 5.0
33 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
It really curbs my appetite but actual weight loss has been a bit slow but I have only been on it for a month.
June 4, 2019
2 months ago
As a 50 year old athlete, I am always looking for a competitive edge and this Muscle Tech product delivers!
April 30, 2019
Hydroxycut B/O
Not really getting the results that I was expecting......
April 21, 2019
3 months ago
I love this product. Gives me so much needed energy.
April 16, 2019
3 months ago
Its ok. Not as good as It should be.
March 15, 2019
4 months ago
It definitely helps a lot when you dieting right
February 23, 2019
5 months ago
Great product, I will continue purchasing this stuff.
Very effective, no discomfort or side effects !!
January 28, 2019
6 months ago
Awesome that’s all awesome
January 19, 2019
6 months ago
It was good
January 14, 2019
6 months ago
Not sure about product.
I've been taking this supplement for a couple of weeks now. So far, no noticeable results. It does curb appetite, but I haven't noticed any extra energy or mental focus. I will finish the bottle and create another review.
December 3, 2018
8 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions and 13 answers
Does this help suppress appetite?
A shopper on Nov 2, 2018
BEST ANSWER: It is not used for appetite suppressant, but due to the various green coffee bean ingredients it may have it as secondary benefit. For best results I would add a Garcinia product to thoroughly suppress your appetite. Muscletech actually re-vamped their Garcinia product, too!
Does this product have any side effects?
Waqar on Oct 24, 2018
BEST ANSWER: Not any that I can tell and I have been taking it almost a month. Just make sure to drink plenty of water
Do u feel jittery?
TERRAWENDA on Nov 17, 2018
BEST ANSWER: I haven't felt jittery but if I take it too late in the day it will keep me up.
Does it burn fat?
A shopper on Nov 25, 2018
BEST ANSWER: I can’t say that it does - i’m Likely not going to buy it again.
Can you take with other products like slimVance?
Phil W on Mar 22, 2019
BEST ANSWER: Yes. Just make sure it’s the non stimulant version of slimvance so you don’t have a caffeine overload
I am a housekeeper, I am always moving around at work, I have tried so many products and the first hydroxycut didn't work, will this work for me with my active job and a good diet?
robyn b on Nov 24, 2018
BEST ANSWER: it works for me alot.