Amino 4XL™ SX-7® Black Onyx™ - Fruit Punch Explosion | GNC

MuscleTech™ Amino 4XL™ SX-7® Black Onyx™ - Fruit Punch Explosion


Item # 802226


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Size: 50 Servings

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Note: This product cannot be sold in Australia


Product Information


Next Generation 5:1:1 Musclebuilding BCAA Formula
  • Test Subjects Increased Strength by 40%*
  • Builds Muscle, Enhances Performance & Boosts Endurance*
  • Powerful Dose of Leucine Including PepForm® & ActiveTR™ Leucine*
The new, supercharged musclebuilding amino formula from MuscleTech® SX-7® is here. Introducing, Amino 4XL™ SX-7® Black Onyx™, the only BCAA product that delivers a powerful 5:1:1 BCAA ratio (which includes both PepForm® leucine and ActiveTR™ leucine) combined with the clinically studied musclebuilding power of PEAK ATP®. Amino 4XL™ SX-7® Black Onyx™ also contains several other popular ingredients, such as taurine, L-citrulline, glutamine and an electrolyte blend that features coconut water. With Amino 4XL™ SX-7® Black Onyx™, you get everything you want in a BCAA formula and more!*

Label (click image to enlarge)


Take 2 scoops per day. Amino 4XL™ SX-7® Black Onyx™ can be taken pre-workout, during your workout or at any other time of the day. Mix 1/2 scoop with 4 oz. cold water, 1 scoop with 8 oz. of cold water, and 2 scoops with 16 oz. of cold water. Consume 2 scoops daily.
Contains coconut ingredients. Processed in a facility that also processes milk, soy, wheat, egg, peanut, tree nut, fish and shellfish ingredients.


For adult use only. Do not use if pregnant or nursing. Consult a medical doctor before use if you have a medical condition or before starting a diet or exercise program. KEEP OUT OF REACH OF CHILDREN.

Other Ingredients

Malic Acid, Natural and Artificial Flavor, Citric Acid, Maltodextrin, Silicon Dioxide, Sucralose, Calcium Silicate , Acesulfame Potassium, FD&C Red No. 40
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  1/2 Scoop
Servings Per Container  50

Amount Per Serving     % DV

Tri-Phase 5:1:1 Amino Matrix  2.8 g   **
L-leucine (as instantized L-leucine, ActiveTR™ L-leucine and PepForm® L-leucine peptides)  2 g   **
L-Isoleucine   400 mg   **
L-Valine  400 mg   **
Cell-Volumizing Aminos  1.25 g   **
Taurine  0.5 g   **
L-Glutamine  0.5 g   **
L-Citrulline  250 mg   **
Peak Muscle Matrix  100 mg   **
PEAK ATP® (Adenosine 5’-triphosphate disodium salt)  100 mg   **
Hydra-Electrolyte Blend  85.25 mg   **
Sodium Chloride  32.5 mg   **
Dipotassium Phosphate  27.5 mg   **
Coconut Water (as Cocos nucifera)(Fruit)  25.25 mg   **

** Daily Value (DV) not established.


4.9 / 5.0
43 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Energizing workouts
I always had seen guys in the gym drinking shakes during their workouts and really didn't realize the reasoning behind it until I started doing it myself. I actually didn't know how helpful BCAs were either and how your body reacts in such a positive manner. I use to buy a pre workout drink to get me through the workout but after using this before and during I am hooked.
February 10, 2016
Best Amino's Available
Love this product. I typically use this during a heavy lifting session and when I do some cross-training. The biggest difference is that when you get halfway through a workout and typically feel a lull, these aminos pick you right back up and help push through your barriers. Tastes and mixes better than ever. I will be keeping this in my stack for a while!
February 3, 2016
Increased endurance
I mainly use this as an intra workout drink and it keeps me going longer during my sessions. I noticed that I also recover a bit quicker after 2 weeks of use. Definitely liking this!
February 3, 2016
less recovery time needed
ive noticed since starting this product 3 weeks ago i can hammer out 2-3 more reps with less recovery time in between each set. HIGHLY RECOMMENDED
January 12, 2016
Really tasteyy!! I love these new aminos. Really good and full ingredients.
January 25, 2016
Excellant Product
Great product I take it before my workout, and stack it with black onyx and n.o, received a free trial and im glad I did... Defiently recommend this product..
February 7, 2016
Instant Recuperation!
Amino 4XL taste amazing and mix easy in water. Just poored in the shaker for one shake and there you have it. The recuperation I felt is incredible good. What a great formula from MuscleTech. I used 3 times a day, Breakfast Pre workout and after workout with outstanding results. I recommend it to every body looking to get better performance.
February 6, 2016
Tastes Great/extra reps
Another great product from MuscleTech. I have been taking it during my workouts. I've been doing heavy weight super sets and feel like I maintain power throughout the workout and can still hit it hard the next day. Great product.
February 6, 2016
Great Addition!
Great taste, and mixes well without shaker cup. I have been taking this product after dinner for the past two weeks with my vitamins. I feel I am more recovered even after pushing through new limits in my workouts.
February 5, 2016
Great Addition to Build Muscle!
I received this product for free as part of the MuscleTech Product Test Team and I have been very pleased so far after nearly three weeks of use. I have been on a cutting regimen while using this product and it has helped me maintain and even slightly increase my strength/size even though I have decreased my daily calories. It has everything you need to get you through a tough workout and recover quickly. I take one scoop during my workout and one scoop after. Tastes great and mixes well. Good to have no matter what your current goals are.
February 5, 2016