Mass XXX™ - VanillaVanilla | GNC
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Item # 386586



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Size: 6.2 lb(s).

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Product Information



GNC AMP Mass XXX™ in vanilla 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 470  

Total Fat 6g   8%
Cholesterol 99mg   33%
Total Carbohydrate 122g   44%
Protein 50g   100%
Total Sugars 20g  
Saturated Fat 4g   20%

Calcium 560 mg   56%
Iron 5.1 mg   28%
Potassium 1320 mg   28%

Sodium  720 mg   **
Tri-MG Infusion™  3 g   **
   BETAPOWER® Betaine Anhydrous   **
Creatine Matric Blend  3 g   **
   Dicreatine malate   **
   Guanidinoacetate   **
   Creatine Monohydrate   **
   L-Arginine   **
   L-Glycine   **
   L-Methionine   **
Micronized Amino Acids  500 mg   **
   Micronized L-Arginine   **
   Micronized L-Leucine   **

** Daily Value (DV) not established.
Other Ingredients
Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Soy Protein Isolate), Natural and Artificial Flavor, MCT (Medium Chain Triglycerides), Polydextrose, Lecithin, Titanium Dioxide (Mineral Whitener), Salt, Acesulfame Potassium, Sucralose
Contains: Milk and Soybeans.
Label (click image to enlarge)

How To Use

As a dietary supplement, mix 4 level scoops (205 g) with 16 fl. oz of cold water or milk. 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.
Consult your physician to using this product if you are pregnant, nursing, under 18 years of age, taking medication, or have a medical condition. Discontinue use two weeks prior to surgery. , Keep out of reach of children.
Store in a cool dry place.
Distributed by:
General Nutrition Corporation
Pittsburgh, PA 15222


4.3 / 5.0
22 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Never got it
January 6, 2019
1 month ago
Good stuff ??????????????????????????
December 25, 2018
1 month ago
Great love it
December 22, 2018
1 month ago
Its great works great and because of it i look great
December 22, 2018
1 month ago
Flavor is good
Very good and
December 22, 2018
1 month 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
1 month ago
Works great!!
December 13, 2018
1 month ago
Cool this one i like it
December 9, 2018
2 months ago
helps build muscles
I recommend this Mass XXX. I've been using this Mass since 2010 until now... I drink this after I push-up and it helps me build my muscles...
October 17, 2018
Good mass, tastes delicious, bad miscibility
I've noticed a weight increase of 10 lbs in one year, taking this only 3 times a week (and only half the serving size of 2 scoops; 4 scoops is the normal). It mixes great in a blender, but in a blender bottle it still remains chunky. The chocolate is the best tasting of the three i had, followed by vanilla. Cooks n Cream I could do without. Try the chocolate in a blender with ice, milk, banana, and peanut butter.
September 27, 2018
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Browse 6 questions Browse 6 questions and 8 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.
What about banana flavor????it's the best
Rick C on Jun 17, 2018
Is this safe for college athletes?
A shopper on Oct 15, 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