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

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


Item # 802226
Note: This product cannot be sold in Canada

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!*


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.
Other Ingredients
Malic Acid, Natural and Artificial Flavor, Citric Acid, Maltodextrin, Silicon Dioxide, Sucralose, Calcium Silicate , Acesulfame Potassium, FD&C Red No. 40
Contains coconut ingredients. Processed in a facility that also processes milk, soy, wheat, egg, peanut, tree nut, fish and shellfish ingredients.
Label (click image to enlarge)

How To Use

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.
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.
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.


4.9 / 5.0
97 Reviews
5 Stars
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1 Star
Best Intra I've ever had
Hands down the best intra shake I've ever had. And for the price I got it at, you cant beat it!
January 31, 2018
Great flavor and mixed really well
Felt results within a few days of taking. Love the BCAAs with the pre-workout simplifies what I need to take with me to the gym.
November 27, 2017
Great product, decent flavor!
I really enjoyed the help that this product provided with muscle recovery after a workout. I significantly noticed a difference in how (not) sore I was after an intense session. The fruit punch flavor was decent. It’s personally not my flavor preference, but it wasn’t bad by any means. Great product!
November 22, 2017
Great Product
I love the flavor of this product and it also gives me great energy to get through the second half of my workouts. Highly recommend!
November 21, 2017
Great product!!
I love this product. The fruit explosion flavor is delicious. When I drink it during workouts I have more energy at the end of my workouts and I’m less sore and recover faster. I would recommend 10/10 times.
November 21, 2017
Freddy Ruiz
This product was great and is one of my favorites to use when needed to recover from any workout. It gave me the energy to fight through each set while I was working out. I have found that it was best when used during a workout because I found that the best productivity came from during a workout. This product is one of the best and wors great.
November 20, 2017
Clean Recovery
As far as Aminos go this product it definitely on the high end of the spectrum. I felt there was a substantial change in recovery, with a quicker rebounce in both strength and energy toward the end and after workouts. It is certainly one of the cleaner products I have tried, have not had any problems as far as stomach or nerves.
November 20, 2017
Very useful aminos
I have used multiple brands of aminos and some I have had success with others not so much. This one has fallen into the successful category. I primarily use in the morning for a pick me up of energy as well as after workouts for recovery. In both cases I have had more energy and been less sore afterwards. I even tried a couple time before workout to utilize the extra energy. Only complaint I had was the flavor was a little harsh but nothing out of the ordinary for aminos.
November 17, 2017
Most potent and beneficial amino blend out there.
I’ve used a lot of aminos before, but never a “designer” one like this with this type of dosing. In my humble opinion, the leucine is the difference. I use Black Onyx intra-workout and the most immediate effect I’ve noticed is being able to have a strong finish to my workouts. Before, I’d be gassed and just going through the motions to check everything off my list. Sipping on this stuff has helped me keep the weight up on my auxiliary exercises at the end of the workout.
On my rest days, I try to get a scoop in early and let it go to work all day to help my recovery, and it’s seemed to help me bounce back quicker.
I’m not a fan of any artificial coloring. That’s the only reason I didn’t give this 10/10. Overall, it’s well worth the price.
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November 13, 2017
Awesome Product
This is one of the best recovery products that I have ever used. It was great to use during my workout for the best results. Noticeably remedied soreness for the next two days after working out.
November 13, 2017
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