Mass XXX™ - Chocolate DoughnutChocolate Doughnut | GNC
Gluten Free Gluten Free



Item # 386612



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Size: 6.2 lb(s)

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GNC AMP Mass XXX™ in chocolate doughnut is clinically proven (See clinical study results below) to help increase lean muscle mass, weight, strength & stamina with 40% fewer sets.^* This advanced muscle performance powder mix provides the right amount of carbs, quality proteins & healthy fats to complement your training and achieve maximum gains.*


  • This protein powder contains 750 calories, 50g protein, 11g BCAA, and 3g Creatine Matrix to help achieve your massive gains.*
  • Contains fast, medium and slow digesting protein.
  • Contains an anabaolic blend that combines clinically studied Betaine with HMB creating an anti-catabolic effect for your muscles to support athletic performance.*
  • Includes 3 forms of Creatine + ingredients your body uses to make creatine to help improve training results & support muscle protein synthesis.^*
  • Contains faster absorbing key aminos for better muscle fuel to support muscle protein synthesis and key processes crucial to gaining mass.^*

Clinical Study Results: ^In a eight-week, randomized, double-blind, placebo-controlled study of healthy male volunteers, 18 subjects completed 3 sets of resistance training (RT) daily + the macronutrint blend in Mass XXX™, and 16 subjects profmranced 5 sets RT daily with no supplement. After eight weeks, subjects on the supplement showed equal gains in body weight, fat free mass (FFM), maximal muscle strength (MMS) and muscle endurance (ME) with only 3 sets RT per day compared to the control group who completed 5 sets RT per day.


Nutrition Facts
Serving Size  4 Level Scoop(s)
Servings Per Container  13

Amount Per Serving     % DV

Calories 750  

Total Fat 7g   11%
  Saturated Fat 4g   20%
Cholesterol 95mg   32%
Sodium 720mg   31%
Total Carbohydrate 122g   44%
  Dietary Fiber 5g   18%
Protein 50g   100%
Calcium 570mg   44%
Iron 4.9g   27%
Potassium 1340mg   29%
Total Sugars 22g  
Includes 4g Added Sugars 4FCC units  

Tri-MG Infusion™  3 g   **
   Betaine Anhydrous   **
   Calcium HMB (as Calcium B-hydroxyB-methylbutyrate monohydrate (HMB))   **
Creatine Matrix Blend  3 g   **
   Dicreatine malate   **
   Creatine Ethyl Ester HCI   **
   Guanidinoacetate   **
   Creatine monohydrate   **
   L-Arginine   **
   L-Glycine   **
   L-Methionine   **
Micronized Amino Acids:  500 mg   **
   Micronized Glutamine   **
   Micronized L-Arginine   **
   Micronized L-Leucine   **

** Daily Value (DV) not established.
Other Ingredients
Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Soy Protein Isolate), Cocoa (Processed with Alkali) , Natural and Artificial Flavors, Medium Chain Triglycerides (MCT), Lecithin, Salt, Acesulfame Potassium , Sucralose
CONTAINS: Milk and Soybeans.
Label (click image to enlarge)

How To Use

As a dietary supplement, mix 4 level scoops with 16 fl. ozo of cold water. Consume 1-2 servings daily. On training days, consume post-workout. On non-training days, consume first thing in the morning or between meals. Consume ample amounts of water while taking this product.


4.4 / 5.0
26 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I love it this product
March 13, 2019
1 month ago
Find the protein that you need for a workout and The Taste is good
March 11, 2019
1 month ago
Works great
It really seems t9o help build up bulk faster than others I have tried
March 9, 2019
4 months ago
The right gainer package for training...
February 12, 2019
2 months ago
Never got it
January 6, 2019
3 months ago
Good stuff ??????????????????????????
December 25, 2018
3 months ago
Great love it
December 22, 2018
3 months ago
Its great works great and because of it i look great
December 22, 2018
3 months ago
Flavor is good
Very good and
December 22, 2018
3 months ago
not impressed
doesn't mix well in shaker. normally I'm eating chunks of it, think I'm just going to stick with eating more.
December 16, 2018
3 months ago
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Browse 7 questions Browse 7 questions and 9 answers
Is this the same as your old product 'amplified mass xxx'?
judy d on Jun 5, 2018
BEST ANSWER: The woman at GNC said it was the same, but Rite Aid still has the original black and red container of Amplified Mass XXX........... The outside of the new container is different, the scoop doesn't even remotely resemble the other scooper and the directions for use are different. It tastes the same. I just purchased the new container so I'm guessing it's the same with 50 grams of protein per serving. Will soon know.
Is this safe for college athletes?
A shopper on Oct 15, 2018
BEST ANSWER: Yes I’m 14 and was suggested to take it by an gnc worker
What about banana flavor????it's the best
Rick C on Jun 17, 2018
Will this help men over 50 years of age??
Stan S on Jun 16, 2018
BEST ANSWER: I'm 55. I've been packing on pounds and muscle. Put the beer can down and pick up the barbell.
How long before you see results?
A shopper on Oct 3, 2018
BEST ANSWER: Id say about a month. Works best when your a being consistent with taking it and working out.
how was the taste?
A shopper on Jun 11, 2018
BEST ANSWER: It tastes amazing it's my favorite I been buying this brand for a while now love it highly recommended
What replaced Amplified Wheybolic Extreme 60? Thanks it was my favorite about 5 yrs ago.
D K on Mar 17, 2019