Hydroxycut® Black Onyx® | GNC

MuscleTech® Hydroxycut® Black Onyx®


Item # 403765

Product Information



Extreme Energy - Weight Loss - Focus

Research-Backed Weight Loss Ingredient. Full Transparency. All Power.

Hydroxycut® Black Onyx® is the newest and most cutting-edge weight loss supplement engineered by MuscleTech®, with the scientifically tested weight loss supplement engineered by MuscleTech®, with the scientifically teste 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
In 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.


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.
Store in a cool dry place.
Distributed by Iovate Health Sciences U.S.A. Inc. 1105 North Market Street, Suite 1330, Wilmington, DE 19801.


4.8 / 5.0
24 Reviews
5 Stars
4 Stars
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1 Star
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
1 month ago
Hydroxycut is the best definitively works. Especially for a boost of energy. Compares well with the pro clinical.
November 1, 2018
Awesome product!
Overall, awesome product! A great appetite depressant!
October 15, 2018
Good product
I really liked this product. I thought it was effective. Out of all of the hydroxycuts that I have used so far, I would recommend this one. It leaves you feeling good throughout the day.
October 15, 2018
Great product
Makes me feel full and helps me eat portions or less than portions gives me energy to get through my day without eating much great product!!!best so far!!
October 13, 2018
Just start taking
So far so good can't wait to see the end result
October 12, 2018
This is the best fat burner on the market!
If you have not tried hydroxycut in any of its versions, you need to! This stuff really works!!!
October 12, 2018
Excellent weight loss product!
I felt like I had been swaying from my diet after the summer was ending and my stomach was not where I wanted it. So I found this product and after taking it for about 3 weeks I can see my abs muscles are starting to show much more definition!
This product gives me great energy, and alertness while I'm at work. I love it!
October 11, 2018
Wow deff. Love this product I would recommend this product.
October 11, 2018
AmaIng product very strong. I’m definitely using this for prep this year for the summer
October 10, 2018
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Browse 5 questions Browse 5 questions and 12 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: Yes. Its very good if you are not cafein sensitive. I used it for 2weeks and i lost 5pound. I stopped coz it gave me jitters.
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.