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Amplified Mass XXX™- StrawberryStrawberry | GNC



Item # 386587



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Size: 6.2 lb(s).

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You can get even more out of every workout session when you make GNC AMP Mass XXX™ a part of your exercise routine. This protein-packed dietary supplement is clinically proven to help increase lean muscle mass with 40% fewer sets.* Plus, 3g each of Tri-MG Infusion™ and Creatine Matrix Blend help support athletic performance* and muscle protein synthesis^*, while micronized amino acids support key processes crucial to muscle growth and repair.^*


Feature Bullets

  • Clinically proven to help increase lean muscle mass, weight, strength and endurance with 40% fewer sets*
  • 50g of fast-, medium- and slow-digesting proteins, along with 11g of BCAA, 750 calories, plus carbohydrates and healthy fats for science-based nutrition, advanced muscle performance^* to help maximize gains*
  • Creatine Matrix Blend with 3 forms of creatine may help improve training results and supports muscle protein synthesis^*
  • Tri-MG Infusion™ is a powerful blend that delivers relentless support for athletic performance*
  • Micronized amino acids help fuel muscles* and support key processes crucial to the growth and repair of muscle^*
  • Gluten-free dietary supplement
  • Naturally- and artificially-flavored, delicious strawberry taste



In an eight-week, randomized, double-blind, placebo-controlled study of healthy male volunteers, 18 subjects completed 3 sets of resistance 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.

^When used in conjunction with an exercise program.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.


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


4.4 / 5.0
34 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Inland empire
Really good service
June 21, 2019
5 days ago
Great product.
Great taste for a weight gainer. Will keep buying this product over and over.
June 1, 2019
1 month ago
Product vs Market Value
I bought the strawberry flavor and am surprised with the fact that it tastes really good. The marketing of the container looks good.

However, the cost compared to how many servings you actually get (13, yes ONLY 13 servings) for $54 does NOT sit well with me. The disclaimer given for this product states this product was used for an 8 week study. If you quickly do the math based off the study, this product only adds gives you about 1125 calories a week (if you spread the 13 servings out between 8 weeks). If that's the range of additional weight you want to add on a weekly basis and are okay with the price, I'd recommend. I know there's other products for the same cost, that provide higher results.
May 8, 2019
Good little hard for the stomach
May 2, 2019
2 months ago
Makes u strong
Love this stuff
April 20, 2019
2 months ago
Great Product
My Son loves this drink when he works out good product delivery was fast no problem with orders
April 13, 2019
3 months ago
No longer at 120 pound frail boi
April 12, 2019
3 months ago
Overall, it's a great product
I bought the Cookies and Cream flavour. The taste was great, and I've been noticing more bulking in the past 2-3 months I've been using the Chocolate flavour of this.

However, tip from me: 4 scoops per 16 fl. oz was WAY too much for me to handle, taste-wise, and many times it'd settle. Instead, I did 2 scoops per 16 fl oz and either had that a couple times a day, or I did 32 fl. oz with 4 scoops, and I found that to work wonders. Plus, it's more hydrating that way. Of course, the extra liquid I used was water and I just stuck with 8 fl. oz of milk. But yeah, that's my main tip. Sometimes 4 scoops per 16 fl. oz is great for people, but it's not for me personally.

Overall, I enjoyed this, and I'm looking to try Strawberry next!
March 23, 2019
I love it this product
March 13, 2019
4 months ago
Find the protein that you need for a workout and The Taste is good
March 11, 2019
4 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.
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
BEST ANSWER: Yes I’m 14 and was suggested to take it by an gnc worker
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.
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 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