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

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


Item # 802226


Size: 50 Servings

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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!*

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
76 Reviews
5 Stars
4 Stars
3 Stars
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1 Stars
Black onyx Amino by AbmRobert
Great taste mixes extremely well. Having used this for a solid 30days I have definitely noticed a difference in my stamina and strength
September 18, 2017
Best amino ever!!!!!,works excellent for me,taste really wood too
September 16, 2017
Amazing product! Definitely check it out!
Awesome product! I haven't really been one to use supplements other than protein, but I decided to give this a try! The taste is delicious and it gives me the energy to keep my workouts intense the whole time!
September 16, 2017
Awesome product!
Awesome product! As a 47 year old family man and blue collar worker my workout time vary from 1am to 10 pm. This product gives me the energy and stamina to,push through hard workouts. Love this stuff! Tastes great mixes well not gritty. I recommend to any serious lifter.
September 13, 2017
Great product
Awesome product! I love that the flavor is not too sweet and the fact that the added citrulline helps improve the pump during my workout. The mixability could be improved and that's why I am giving 4 stars out of 5. Overall, it is a great product!
September 11, 2017
recharged on every set
The best amino acid blend I have used as intra-workout, this recharges me on every set, I was able to reduce at least 20% of my rest time between sets and hit better my muscles, I've broken almost all my PRs in just 3 weeks, this product with a pre-workout can radically change your workout. I used a complete scoop per workout.
September 5, 2017
Great product!
This product is amazing. The aminos taste great! It's not too sweet. My recovery time is decreased, and I have more endurance with my workouts. I have been using this for every workout, and I like using it with my early morning workouts as well.
September 2, 2017
Love this product!
Amino 4XL is one of the best amino products that I have ever tried. The taste is on point and does not make me want to "just chug it". I enjoy sipping on it. I usually have it intra, pre, or post workout. I have seen an increase in my strength and recovery using this product already. I am truly less sore and feel great! I would highly recommend this product for recovery. Also, if you just want a great tasting drink that will liven up and give your basic daily water intake a recovery source as well.. this is great. I usually take the recommended 1/2 scoop and feel great.
August 28, 2017
Love this product!!
Amino 4XL SX-7 Black Onyx - Fruit Punch Explosion is definitely a product you should be taking intra-workout or any time you feel like your body needs that extra energy and muscle recovery. I have used this product intra-workout to keep my body replenished with electrolytes, as well as, energy! I have to admit that I have seen results even after taking it for a short period of time. I do not like mixing my products with anything else besides water, therefore I was very pleased with the fact that Fruit Punch Explosion flavor tastes great with water!! In the future, I would like to recommend that Muscle Tech explore possibilities of making this product in flavors such as orange or lemonade (two of my favorites!). If you are looking to maximize your performance and make some crazy gains at the gym, then you should definitely purchase this product!
August 26, 2017
Great product! ??
Excellent flavor makes consumption painless and enjoyable. I've been searching for an alternative to my morning coffee. I take one scoop in the morning and one before/during my workout. All the essential ingredients to enhance your performance and maximize your workout's results conveniently available in this product! Thanks for yet again providing an excellent product! I'm definirely reccomending this to the clients I train!
August 26, 2017