Ultra Carnitine 3X™ SX-7® Black Onyx™ | GNC

MuscleTech® Ultra Carnitine 3X™ SX-7® Black Onyx™


Item # 403729
Note: This product cannot be sold in Canada

Product Information



Advanced, Three-Phase L-Carnitine Formula + Weight Loss

Advanced, Scientifically Studied Weight Loss with C. Canephora Robusta*
Maximum-Dosed L-Carnitine Complex
Powerful Non-Stim Formula

Ultra Carnitine 3X™ SX-7® Black Onyx™ is a new, powerful weight loss plus L-carnitine formula from MuscleTech®. Ultra Carnitine 3X™ SX-7® Black OnyxTM delivers three different sources of L-carnitine combined with the scientifically studied key weight loss ingredient robusta coffee extract.*

Advanced, Scientifically Studied Weight Loss
Ultra Carnitine 3XTM SX-7® Black Onyx™ delivers the scientifically studied key weight loss ingredient robusta coffee extract, which has been shown in two separate scientific studies to deliver real weight loss.*

Featuring 3 Different Types of Carnitine
Ultra Carnitine 3X™ SX-7® Black OnyxTM features the three most popular forms of carnitine: L-carnitine L-tartrate, carnitine fumerate and acetyl-L-carnitine, in a powerful 1.7g dose. This advanced formula also includes grains of paradise, which supplies the compound 6-paradol. The combination of these different ingredients makes Ultra Carnitine 3X™ SX-7® Black Onyx™ a truly unique formula.*


Nutrition Facts
Serving Size  3 Caplet(s)
Servings Per Container  40

Amount Per Serving     % DV

Vitamin B6 (as Pyridoxine HCl)  2 mg   **
Vitamin B12 (as Methylcobalamin)  6 mcg   **
Pantothenic Acid (as Calcium Pantothenate)  5 mg   **
L-carnitine (as L-carnitine tartrate, acetyl-L-carnitine and carnitine fumarate)  1.7 g   **
Robusta coffee extract (as C. canephora robusta)(bean) Standardized for 45% chlorogenic acids  200 mg   **
Grains of paradise (as Aframomum melegueta) (seed)  15 mg   **

** Daily Value (DV) not established.
Other Ingredients
Microcrystalline Cellulose, Dicalcium Phosphate Dihydrate, Pregelatinized Starch, Stearic Acid, Coating (Titanium dioxide, Polyethylene glycol, Talc), Croscarmellose Sodium, Magnesium Stearate, Silicon Dioxide
Label (click image to enlarge)

How To Use

Take 3 caplets with 8 oz. of water, 2 times daily, 30 to 60 minutes before your 2 largest meals of the day. Do not exceed 6 caplets 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), including blood thinners. Consult a medical doctor before starting any diet or exercise program. 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.
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.


4.8 / 5.0
45 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Does work
So to start I do crossfit workouts 4 days a week.. lost a lot of weight.. approaching 40 lbs over 12 weeks. So noticed I had plateaued some and couldn’t break it.. decided to try this product after some research.. it works pretty well.. definite loss of weight. Cravings greatly diminished. I like it. Will continue to use
June 5, 2018
4 months ago
Great supplement to take to help with fat loss on a good cardio regiment, or diet. This taken with CLA is a bonus, great combo.
October 31, 2017
I have been using this in conjunction with Hydroxycut and apple cider vinegar. Literally the pounds are shredding off, JUST DRINK YOUR WATER !!!
October 30, 2017
Greatest CLA Product on the market!
This carnitine product is by far the best one I have ever taken. I did feel a little bit of increase in energy, as well as, an increase in sweating. I like that they include grains of paradise in with the 1.5g carnitine. MuscleTech does it again with a great product. Try this and you won't be disappointed.
October 26, 2017
Feel The Burn!
Great stacked with CLA. With a good diet and consistent training this product will help you with your weight loss goals. Having a crappy diet and lack of training will make this product less affective.
October 25, 2017
Good Product
I stacked this with MuscleTech's Hydroxycut Non-Stim SX-7, Test 3X SX-7, CLA 4X SX-7, & Apple Cider+ SX-7 for the ultimate weight loss stack. I've been taking these products for 2.5 weeks & loss 2.5 lbs. I am in a calorie deficit, tracking my macros to control all variables. This product is also effective by itself as Carnitine has been scientifically studied to add in weight loss.
October 18, 2017
Best on the Market
This along with the CLA by MuscleTech work great together. Important to note these aren't magic pills, those don't exist. You can't take these and do nothing else different and expect change, these are aids on top of a gym regimen to help you burn fat
October 14, 2017
Some composition changes over 4 weeks
October 14, 2017
Great results
First time I’ve tried a Carnitine product and I really like it. Stacked it with CLA and non-stim Hydroxycut and saw great results. Great appetite suppressant and energy support.
October 14, 2017
Great Carnitine Product
I received this product from MuscleTech to try out. I stacked it with the Black Oynx Hydroxycut SX-7 Non-Stim, Test 3X, Apple Cider Vinegar and the Black Onyx SX-7 CLA. I like that none of the products contain stimulants and they help curb appetite. The pills are large but easy coated and to swallow. Each serving provides an adequate amount of carnitine coupled with additional enhancing elements.
October 14, 2017
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