AMINO BUILD® NEXT GEN - WatermelonWatermelon | GNC
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MuscleTech® Amino Build™ Next Gen


Item # 802213
Sugar Free Sugar Free
Note: This product cannot be sold in Canada

Product Information



Clinically Dosed, Performance-Enhancing BCAA with Betaine
  • Test Subjects Built 3.75 Lbs. of Lean Muscle*
  • Shown in Research to Boost Strength by 40%
  • Enhances Endurance with the First Dose*
Clinically Dosed, Muscle- & Performance-Enhancing BCAA Formula
MuscleTech® researchers have taken their most powerful amino acid formula ever, and made it even better. AMINO BUILD® NEXT GEN - now with a new, advanced complex, featuring instantized BCAAs, clinically dosed betaine and powerful cell volumizers plus coconut water, watermelon juice and new, delicious flavors. Unlike inferior products that are underdosed and gimmicky amino acids and no studies to back up their claims, AMINO BUILD® NEXT GEN is backed by 4 different clinical studies that demonstrate its muscle-, strength- and performance-enhancing abilities.*

Build 3.75 Lbs. of Muscle
Test subjects who supplemented with the exact dose of betaine in 2 scoops of AMINO BUILD® NEXT GEN (2.5g) built 3.75 lbs. of lean muscle in 6 weeks compared to 0.66 lbs. by the placebo group. That's over 5.5 times the muscle gained (vs. the placebo). Betaine has also been shown in a separate study to enhance muscle endurance.*

Increase Strength by Over 40%
AMINO BUILD® NEXT GEN is precisely formulated with a 4g dose of L-leucine (in 2 scoops) shown in a clinical study to help subjects increase their 5-rep max strangth by over 40%!

Enhance Endurance Pefroamance with the First Dose
The 1g dose of taurine found in 2 scoops of AMINO BUILD® NEXT GEN is clinically shown to improve performance in endurance athletes. And for a truly complete formula, precise doses of electrolytes were added to help replenish electrolyte stores that are depleted during your workout!


Nutrition Facts
Serving Size  1 g
Servings Per Container  30

Amount Per Serving     % DV

Calories 25  

Potassium (as Dipotassium Phosphate) 18mg   1%
Total Carbohydrate 1g  
Sugars 0g  
Sodium 35mg   1%

2:1:1 BCAA Matrix  0   **
L-Leucine   2 g   **
L-Isoleucine   1 g   **
L-Valine  1 g   **
Cell-Volumizing and Recovery Complex  0   **
Taurine  500 mg   **
L-Glutamine  500 mg   **
L-Alanine  500 mg   **
Strength-Enhancing Compound  0   **
Betaine Anhydrous  1.25 g   **
Sodium Chloride  80 mg   **
Coconut Water (as Cocos nucifera)(Fruit)  50 mg   **
Watermelon Juice (as Citrullus lanatus)(Fruit)  50 mg   **
Dipotassium Phosphate  40 mg   **

** Daily Value (DV) not established.
Other Ingredients
Malic Acid, Natural and Artificial Flavor, Silicon Dioxide, Citric Acid, Calcium Silicate , Sucralose, Sodium Chloride, Acesulfame-Potassium, FD&C Red No. 40
Contains Coconut Ingredients., Processed in a facility that also processes egg, fish, milk, peanut, shellfish, soy, tree nut, and wheat ingredients.
Label (click image to enlarge)

How To Use

Mix 1 scoop with 8 oz. of water. For full effects, mix 2 scoops with 16 oz. of wter and consume pre- and intra-workout. Read the entire label before use and follow directions provided. If you want to add to your overall daily BCAA intake without the additional calories from drinking multiple protein shakes, you can also add 1-2 scoops to a jug of water and drink it over time.
NOT INTENDED FOR USE BY PERSONS UNDER 18. Do not use if you are pregnant or nursing. Consult a medical doctor before use if you have any medical condition or if you are taking any prescription or over-the-counter medication(s), and before starting any diet or exercise program. Use only as directed.
^This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Made in the U.S.A. from international ingredients. Distributed by Iovate Health Sciences U.S.A. Inc. 1105 North Market Street, Suite 1330, Wilmington, DE 19801


4.9 / 5.0
15 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
The product is great and the flavor is amazing too.
March 11, 2019
3 months ago
good aminos
these aminos are the best ones ever
September 27, 2017
Great product
Representative from muscletech, Karl, sold me some of the product and it works amazingly
September 21, 2017
Great throughout my workout was amazing!!
Got a sample from a demo in my karl/kim
Flavor is awesome....they gave a scoop to try and i enjoyed the energy i felt during my workout. Def buying this product.
August 16, 2017
Great product
Carl and Kim demo this product at the gym, tastes amazing
August 16, 2017
One of the best I have tried
Tastes great. I was using this during the summer before I played soccer. The results were great. My friends at first would make fun of my pink drink. Later, they would ask me to make them a batch before I'd get on the field. I made the doses a little less than before. Partly because i wanted to stretch it longer and partly because of the odd brain-zaps that i'd get while physically exerting myself on the thing. I wasn't too disturbed by this (it's happened before w/o any supplements) but i just wanted to play it safe.

Overall, this is a great product. I totally recommend it. While I didn't really build much muscle using the product, I had tons of energy on the field.
The only thing I'd mention regarding the product is make sure you have lots of water on hand. I got dehydrated every time.
June 25, 2017
BCAA flavors rock!
2000 mg Leucine, yes! The flavor was good, a little on the sweet side but overall really enjoyed and will purchase in the future.
June 24, 2017
Thus product helps me get through tuff workouts. I drink it while training to keep up energy . WATERMELON IS AWESOME!
June 23, 2017
Great Product!!
BCAA's are a must in your daily routine if you are working out, no matter what. They inhibit the breakdown of muscle cells and help trigger protein synthesis. Muscletech Amino Build Next Gen was a flavor packed product. I have the orange mango cooler and it taste absolutely delicious! I usually take it 3 times a day, 1 consumed during workout, and I can notice an improvement in muscle soreness as well as an improvement in recovery time. BCAA's really are an essential supplement to give your body the amino acids its needs to thrive. This product IS the best!
June 22, 2017
Taste Good.
Ienjoy the flavor of this product, fruit punch, and it tasted like any other fruit punch in the grocery. Simple to mix and drink. It is a well-rounded mix of BCAA's and other ingredients to provide my body with what it needs to recover after a grueling workout. It is good to accompany creatine with this so your muscles will grow. Mostly I take this after I ate some meal for my diet.
June 21, 2017
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Browse 3 questions Browse 3 questions and 2 answers
Is this product ok for vegetarians?
Michael G on Feb 25, 2018
BEST ANSWER: Absolutely, this is a great way to add the essential aminos when on a vegetarian/vegan diet.
I am a 52-year-old male doing the insanity workout .Which pre-workout supplement would best suit me muscle tech amino build next gen or muscle tech vapor X5 ? And how would these compare to original c4 ripped
A shopper on Apr 5, 2019
BEST ANSWER: I use muscle tech amino build next gen. It works great. Several of my friends and my wife, started using it and now they wouldn't workout without it.
If I mix a dbl batch (of Amino Build, next gen), in x1 liter of h2o & don't quite finish all of it can I put it in the frig till tomorrow,?
A shopper on Jul 12, 2016