Mass XXX™ - ChocolateChocolate | GNC



Item # 386585



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Size: 6.2 lb(s).

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Clinically Proven Muscle Strength & Stamina
Increase Lean Muscle Mass with 40% Fewer Sets*
Micronized Aminos to Help Fuel Muscles.*

3 Sets + Mass XXX™ = 5 Sets
Equal Gain in Mass, Muscle Strength and Endurance
In an eight-week, double-blind, placebo-controlled study of healthy male volunterrs, 18 subjects completed 3 sets of resitance training (RT) daily + the macronutrient blend in Mass XXX™, and 16 subjects performed 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.

The Ultimate Lean Mass Builder
Clinically Proven
Helps increase Lean Muscle Mass, Weight, Strength & Stamina with 40% Fewer Sets*

Nutritional Foundation
The Right Amount of Carbs, Quality Proteins & Healthy Fats to Complement Your Training & Achieve Maximum Gains.*

Fast, Medium & Slow Absorbing Proteins
Science-Based Nutrition for Advanced Muscle Performance.^*

Enhanced Results
Studies Show Creatine Can Safely & Effectively Support Immediate Energy Production & Athletic Performance When Combined with Regular Exercise.*

Beyond the Basics
Tri-MG Infusion™
This Anabolic Blend Combines Clinically Studied Betaine with HMB Creating an Anti-Catabolic Effect for Your Muscles to Support Athletic Performance.*

Creatine Matrix Blend
Includes 3 Forms of Creatine + INgredients Your Body Uses to Make Creatine to Help Imrove Training Results & Support Muscle rotein Synthesis.^*

Micronized Amino Acids
Faster Absorbing, Key Aminos for Better Muscle Fuel to Support Muscle Protein Synthesis & Key Processes Crucial to Gaining Mass.^*

Label (click image to enlarge)


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.
Contains: Milk and Soybeans.


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.

Other Ingredients

Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Soy Protein Isolate), Cocoa (Processed with Alkali) , Natural and Artificial Flavor, MCT (Medium Chain Triglycerides), Lecithin, Salt, Acesulfame Potassium, Sucralose


Store in a cool dry place.
Distributed by:
General Nutrition Corporation
Pittsburgh, PA 15222

Nutrition Facts

Serving Size  4 level scoop(s)
Servings Per Container  13

Amount Per Serving     % DV

Calories 750  

Total Fat 6g   8%
Cholesterol 100mg   33%
Total Carbohydrate 123g   45%
  Dietary Fiber 4g   14%
Protein 50g   100%
Saturated Fat 4g   20%
Total Sugars 20g  

Calcium 560 mg   43%
Iron 5.1 mg   28%
Potassium 1320 mg   28%

Sodium  720 mg   **
Tri-MG Infusion™  3 g   **
   BETAPOWER® Betaine Anhydrous   **
Micronized Amino Acids  500 mg   **
   Micronized L-Arginine   **
   Micronized L-Leucine   **
Creatine Matrix Blend  3 g   **
Dicreatine malate  890 mg   **
Creatine Ethyl Ester HCL  800 mg   **
Guanidinoacetate  500 mg   **
Creatine Monohydrate  400 mg   **
L-Arginine  300 mg   **
L-Glycine  80 mg   **
L-Methionine  30 mg   **

** Daily Value (DV) not established.


4.6 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
My body had to get used to it
I love when I get my discount on my product I will buy it forever good product you have to drink it the right way or it will affect your stomach. I will continue to drink it I love the product the way I mix it up and has put a lot of bulk on me.
August 3, 2018
2 months ago
Great Stuff.
August 2, 2018
1 month ago
Well the fact i never got the product because there was another shipment with the same tracking number I wasn’t able to get it.
July 22, 2018
1 month ago
Great product
My husband has been using this for about 2 months now and it has given him tremendous energy to get through his busy working day. After being off work for 6 months and total knee replacement he is feeling great now that he has been using this product. He just had an annual exam today and the doctor said he is very healthy. Yay
July 18, 2018
1 month ago
Good taste, mixes excellent in a bender, and perfect formula for post workout mass gaining.
July 4, 2018
2 months ago
Great taste and helped improve my body
June 11, 2018
5 months ago
Good product
June 2, 2018
3 months ago
Great for Mass increase
I took this for a whole month straight and was super impressed by the results
May 15, 2018
3 months ago
great muscle and weight gain, love the product
May 13, 2018
3 months ago
I only use this
Best results I've ever gotten have been when I was taking this I recommend this to everyone
April 8, 2018
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Browse 4 questions Browse 4 questions and 7 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.
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
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.
What about banana flavor????it's the best
Rick C on Jun 17, 2018