Amplified Mass XXX™- StrawberryStrawberry | GNC



Item # 386587

Product Information



GNC AMP Mass XXX™ in strawberry 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 Scoop(s)
Servings Per Container  13

Amount Per Serving     % DV

Calories 750  

Total Fat 6g   9%
  Saturated Fat 4g   20%
Cholesterol 100mg   33%
Sodium 390mg   16%
Potassium 720mg   21%
Total Carbohydrate 123g   41%
  Sugars 22g  
Protein 50g   100%
Calcium 560mg   56%
Iron 1.5mg   8%

Tri-MG™ Infusion - Betaine (as Betaine Anhydrous), HMB (as Calcium HMB)  3 g   **
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   **

** Daily Value (DV) not established.
Other Ingredients
Maltodextrin, Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Soy Protein Isolate), Medium Chain Triglycerides, Natural and Artificial Flavors, Polydextrose, Lecithin, Citric Acid, Red 40 Lake, Acesulfame Potassium, Sucralose
This product contains ingredients derived from milk and soy.
Label (click image to enlarge)

How To Use

Mix 4 level scoops (205g) with 16 ounces of cold water or milk. Consume 1-2 servings daily.
Consult your physician prior to using this product if you are pregnant, nursing, taking medication or have a medical condition. Discontinue use two weeks prior to surgery.
Significant product settling may occur.
Distributed by:
General Nutrition Corporation
Pittsburgh, PA 15222


4.5 / 5.0
15 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Cool this one i like it
December 9, 2018
3 weeks 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
Works great, helps build muscle fast.
September 4, 2018
7 months ago
Love the extra calories but it mixes terribly
September 1, 2018
4 months ago
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
5 months ago
Great Stuff.
August 2, 2018
5 months 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
5 months 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
5 months ago
Good taste, mixes excellent in a bender, and perfect formula for post workout mass gaining.
July 4, 2018
6 months ago
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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
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.
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.