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

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


Item # 403729


Size: 120 Caplets

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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.*

Label (click image to enlarge)


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.

Other Ingredients

Microcrystalline Cellulose, Dicalcium Phosphate Dihydrate, Pregelatinized Starch, Stearic Acid, Coating (Titanium dioxide, Polyethylene glycol, Talc), Croscarmellose Sodium, 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.

Nutrition Facts

Serving Size  3 Caplets
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.


4.4 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Not for me
I used the entire bottle as directed, ate a 1200 calorie diet, and did HIIT at least 3x a week. I did lose some weight but nothing to write home about, as it was only 5 lbs in a month...Maybe I was just hoping for too much but I feel as though with clean eating and regular exercise that would have boosted it a little more!
March 1, 2016
Great product !
I've been using the MuscleTech Ultra Carnitine 3X SX-7 Black OnyxTM for two weeks now and I'm a big fan.

What I like the most, this product features the three most popular forms of carnitine: L-carnitine L-tartrate, carnitine fumerate and acetyl-L-carnitine which helps with weight loss.

The capsules are easy to swallow and leaves no after taste.
I'm really looking forward to use this product even more to get see the full benefits.
February 5, 2016
Added to my stack
I was super excited when I first got this to add it into my stack. It has the three strongest sources of L-carnitine... which all help lead to weight loss. I've added it in and I'm loving the results so far.
January 28, 2016
looking good so far
only been using this for a short time, starting to see results,
leaning out, and keeping up my strenght
January 13, 2016
great results
down 10 lbs in 3 weeks with no side effects. looks like i may have just found my weight loss product that i've been looking for
January 12, 2016
It works!
Let me just say I'm on my second bottle and down 15 pounds. It works for me and I don't seem to have any side effects. I'll continue to use it until I reach my desired weight.
January 10, 2016
Just finished my 1st bottle and noticed better results in 40 days then I did the 6 months before.
January 10, 2016