Hydroxycut® SX-7™ Black Onyx™ | GNC

Hydroxycut® SX-7™ Black Onyx™


Item # 802159
Note: This product cannot be sold in Canada


Product Information


New Hydroxycut® SX-7™ Black Onyx™ is the most hardcore and cutting-edge formula on the market today. Supercharged with 7 premium ingredients in a never-before-seen combination, this superior formula is designed for extreme energy and mental focus. Just one dose delivers an unrivalled sensory overload unlike anything you’ve ever tried.*
Try Hydroxycut® SX-7™ Black Onyx™ today!
  1. Salvia miltiorrhiza – An herb with long-standing traditional use, known to contain various phenolic acids such as danshensu and salvianolic acid B, as well as diterpene compounds such as cryptotanshinone, salvia has been added to enhance the sensory experience.
  2. Coleus – An ancient subtropical herb supplying forskolin. It's been trusted for years for its effects when combined with caffeine.
  3. Theanine – An amino acid that contributes to the unique sensory experience.
  4. Caffeine anhydrous – Scientifically researched ingredient shown to enhance thermogenesis, increase energy, and enhance mental focus.
  5. Yohimbe bark extract – A bark extract supplying a highly potent dose of the active compounds yohimbine and rauwolscine.
  6. Green coffee bean extract – Subjects taking 200mg of premium green coffee standardized for 45% chlorogenic acids lost 10.95 lbs. in 60 days with a low-calorie diet, and 3.7 lbs. in 8 weeks with a calorie-reduced diet and moderate exercise.
  7. Satsuma orange supplying beta-cryptoxanthin – An ancient Japanese citrus fruit containing the unique active carotenoid compound beta-cryptoxanthin.

Label (click image to enlarge)


To assess your tolerance, take one capsule with 8 oz. of water once per day. Once your tolerance has been assessed, take 1 capsule 2 times daily 30 to 60 minutes before your two largest meals of the day (e.g. breakfast and lunch). Once tolerance has been assessed and you are looking for an additional boost of energy, take an additional capsule with the first serving of the day. Do not exceed 3 capsules in a 24-hour period. For best results, use for 60 days in combination with diet and training.


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, or 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 1.5 cups of coffee. 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. One serving contains up to 5.2mg of yohimbe alkaloids. Do not exceed recommended serving. Improper use of this product will not improve results and is not advised. Use only as directed. KEEP OUT OF REACH OF CHILDREN.

Other Ingredients

Capsule (Gelatin, Titanium Dioxide), Microcrystalline Cellulose, Magnesium Stearate, Silicon Dioxide
Distributed by Iovate Health Sciences U.S.A. Inc. 1105 North Market Street, Suite 1330, Wilmington, DE 19801. Made in the U.S.A. from international ingredients. © 2014. Patent pending. For lot no. and expiry date: see bottle

Nutrition Facts

Serving Size  1 Capsule(s)
Servings Per Container  80

Amount Per Serving     % DV

Green coffee bean extract (as Coffea canephora robusta) Standardized for 45% chlorogenic acids  200 mg   **
Caffeine Anhydrous  145 mg   **
Coleus root extract (as Coleus forskohlii)  50 mg   **
L-Theanine  50 mg   **
Salvia root extract (as Salvia miltiorrhiza) Standardized for 7% salvianolic acid  25 mg   **
Yohimbe bark extract (as Pausinystalia yohimbe) Standardized for 6% yohimbine  20 mg   **
Satsuma mandarin pulp concentrate (as Citrus unshiu) Supplying 0.2% beta-cryptoxanthin  2 mg   **

** Daily Value (DV) not established.


4.5 / 5.0
71 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
It is amazing I fit into pants I hadn’t fit into in 2 years a week later. Must take early lot of caffeine but it works better than I thought. The probiotic I bought here too also helped it work better and faster. I love this product. ??
May 10, 2018
3 months ago
On my 1st day and felt jittery...did not like the feeling and will be trying the non stimulant one.
April 23, 2018
Somewhat disappointed
I expected that it would give me more energy but have been disappointed in that area. It is good for appetite control though.
April 10, 2018
4 months ago
Not strong enough
March 20, 2018
4 months ago
good product for fat burner, on a good diet, with cardio it definitely helped me shed some fat. Also no jittery feelings, good appetite suppressant, good energy, and not to crazy high of a caffeine content per serving which was nice.
October 31, 2017
Good clean energy, no jitters and good focus.
October 25, 2017
Love seeing muscletech tweaking their tried and true supplements like hydroxycut!
October 13, 2017
Awesome Supplement
This stuff is fantastic! Definitely gets the job done! Give you great energy and weight loss!
October 13, 2017
It works!
I've been using it early in the morning and late afternoon and there is no jitters, but my energy levels have really gone up. Helps me get through my workouts and has helped on losing a couple of lbs.
October 13, 2017
Weight loss, energy, focus
No jitters. Clarity. Focus. Smooth delivery. Sweat levels increased. A single pill is optimal.
October 12, 2017
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 9 questions Browse 9 questions and 2 answers
can women take this product?
A shopper on Apr 5, 2016
I have just started taking Hydroxycut, I,m taking it as directed, one in the morning and one in the afternoon. I have noticed an upset stomach, is this something the body will get used to after awhile? Has anyone else experienced this?
Steve F on Jul 16, 2016
BEST ANSWER: Drink more water.
can menopausal women take this product?
A shopper on Jun 6, 2016
Can women take this?
A shopper on Jan 3, 2017
Can I use before heading to the gym? This means my meal wont be for another 2 hours...
Ri M on Feb 26, 2018
can you eat after taking it?
A shopper on Oct 11, 2016
How long can you take this product for?
A shopper on Nov 29, 2016
Should I stop using Hydroxycut before getting a tattoo?
A shopper on Aug 4, 2016
can I use this and fineflex at the same time

can I use sx-7 and fineflex at the same time?
A shopper on Sep 14, 2016
BEST ANSWER: Hello- Yes, you should be able to use both at the same time. You may want to take extra care "listening" to your body at first, just to make certain it is right for you.