Hydroxycut® SX-7™ Black Onyx™ | GNC

Hydroxycut® SX-7™ Black Onyx™


Item # 802159


Size: 80 Capsules

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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
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
50 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Best fat burner on the market
This is without a doubt the best fat burner I've ever taken, and will continue to take you sweat a ton while working out, as well as gives you enough energy to make it through your day! I would recommend this product to anyone who wants to shed a few pounds and wants quick results.
September 24, 2017
Hydroxycut Black Onyx
I just started using this product a week and a half ago and have been been feeling amazing ever since using it. First of all my days are filled with more energy and motivation as to what they were before, and second of all I have been getting a lot more lean since using it all while still having just as much strength but able to push harder. I would recommend this product to people that have no motivation or lacking energy to go and be active.
September 19, 2017
My wife and I started MUSCLETECH HYDROXYCUT SX-7 Black Onyx at the same time, My wife was the first to notice that my overall energy level has increased. The weight loss is quick and very noticeable, my clothes are looser than they have been in a while. While we still love the original, true SX-7 we believe this product is on point another great product from MUSCTECH.
September 17, 2017
Gives me energy and I began seeing weight loss results in just a couple weeks.
August 29, 2017
1 month ago
Works great!
MuscleTech's Hydroxycut SX-7 Black Onyx provides that extra burn for great weight loss. I've seen great results by adding SX-7 into my exercise regimen.
June 26, 2017
5 months ago
Doesn't work
I've taken just about every hydoxycut out there and the hype about this one Is very False, doesn't work at all. I would just stick to the older formulas I've gotten much better results
June 12, 2017
Response from GNC
Rico, we are sorry to hear about your experience with the Hydroxycut SX-7 Black Onyx. Please accept our apology for the experience you had with the product. We want you to be fully satisfied with every item that you purchase from If you are not satisfied with an item that you have purchased, you may return the item within 30 days from the order date for a full refund of the purchase price, minus the shipping and handling charges. The item must be returned, unused or used, in good condition, in original boxes (whenever possible), and with all paperwork and accessories to ensure full credit. You may also want to visit our your local GNC store and speak to one of our associates who can find the best product for your needs
June 13, 2017
John TStaff
This product works great. It is a little stronger than the Hydroxycut SX-7. I take one capsule 30 minutes before a light breakfast. Afterward I workout at the gym for an hour and a half. It has made my workouts more intense and focused. I have lost weight and body fat from this product. But weight loss must be accompanied by proper diet. I also use this product before an intense and long mountain bike ride. It works better with cardio. I suggest following the directions for use to get the best results.
April 7, 2017
engery level is very good
My wife was the 1st to notice that my overall energy level has increased. I cant report on weight loss yet. but I can say that my clothes are looser than they have been in a while. as far as some kind of sensory experience, I not aware of anything yet. while I still love the original, true SX-7 and miss it greatly. I believe this product is helpful.
March 29, 2017
Terrible Customer Service. NEVER AGAIN.
I ordered my product on 1/20 from my home in southern Wisconsin. According to the tracking #, it was not processed or shipped in any way until 1/29, when it shipped from a location in Indiana (200 mi away) TO ATLANTA, GA (over 800 miles away!) Today is 2/3 and I still do not have my product. As of late last night the tracking record shows my package still stalled somewhere in Atlanta, and the tracking record has not been updated since 1/30. I emailed Customer Service for assistance, and received a scripted email reply that did NOT answer my questions about the delay and did NOTHING to solve my problem. Buh-Bye, GNC. I can take my money elsewhere.
February 3, 2017
Returning it!!!!
Did not work for me. Used to take other natural items, even CLA and my digestive system felt great. This pill did not only mess up that. I'd rarely send me to the bathroom, not great at all energy wise, followed the instructions and barely had energy, by the time I got to the gym after work, I had no energy left in me. Lipo 6 worked better in this part.
August 3, 2016