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Mass XXX Chocolate

GNC AMPUpdated April 2026

Product Information

Brand
GNC AMP
Form
Powder
Servings Per Container
13
UPC
0 48107 18567 1
Product Type
Other Combinations
DSLD Entry Date
2019-12-22

Target Groups

Adult (18 - 50 Years)Gluten Free

All Ingredients

IngredientAmount% DV
Calories750 Calorie(s)
Total Fat6 Gram(s)8%
Cholesterol100 mg33%
Total Carbohydrates123 Gram(s)45%
Protein50 Gram(s)
Calcium560 mg43%
Iron5.1 mg28%
Sodium720 mg31%
Potassium1320 mg28%
Tri-MG Infusion3 Gram(s)
Creatine Matrix Blend3 Gram(s)
Micronized Amino Acids500 mg

† Daily Value not established.

Label Statements

General Statements: All Other Content

3 Sets + Mass XXX = 5 sets Equal gain in mass, muscle strength and endurance In an eight-week, randomized, double-blind, placebo-controlled study of healthy male volunteers, 18 subjects completer 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 of RT per day compared to the control group who completed 5 sets RT per day.

Formula re: Contains

Typical amounts of key amino acids per 4 scoop serving to support optimal muscle growth and development 11 g of BCAA Leucine Isoleucine Valine 35 g of muscle supporting amino acids Glutamine & glutamic acid Tyrosine Aspartic acid Cystine Lysine Tryptophan Threonine Histidine Proline Alanine Serine Phenylalanine 4 g of creatine building blocks Arginine Methionine Glycine

General Statements: All Other Content

When used in conjunction with an exercise program.

Seals/Symbols

Informedchoice.org Trusted by sport

General Statements: All Other Content

Products bearing this logo have been tested for banned substances by LGC Science, Inc., a world-class anti-doping lab. Product was tested for over 145 banned substances on the 2017 World Anti-Doping Agency (WADA) Prohibited List via LGC skip lot testing protocol #ICP0307. See gnc.com for more information.

FDA Disclaimer Statement

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.

Precautions re: Children

Keep out of reach of children.

Storage

Store in a cool, dry place.

General Statements: All Other Content

Advanced muscle performance

Formula re: Contains

750 calories 50 g protein 11 g BCAA 3 g creatine matrix

Formulation re: Other

Clinically proven muscle strength & stamina Increase lean muscle mass with 40% fewer sets Micronized aminos to help fuel muscles

FDA Statement of Identity

Dietary Supplement

Formula re: Contains

Natural + artificial flavors

Suggested/Recommended/Usage/Directions

Directions: 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.

Precautions re: Allergies

Contains: Milk and soybeans.

Precautions re: Pregnant or Nursing or Prescription Medications

Warning: Consult your physician prior to using this product if you are pregnant, nursing, taking medication, under 18 years of age, or have a medical condition.

Precautions re: Children

Warning: Consult your physician prior to using this product if you are pregnant, nursing, taking medication, under 18 years of age, or have a medical condition.

Precautions re: All Other

Discontinue use two weeks prior to surgery.

Formulation re: Does NOT Contain

Gluten free.

Formulation re: Other

Notice: Significant product settling may occur.

Brand IP Statement(s) re: (c), (TM), (SM)

Betapower is a registered trademark of DuPont or its affiliates.

Seals/Symbols

Banned substance free Gluten free

Formulation re: Does NOT Contain

Banned substance free

Formulation re: Other

The ultimate lean mass builder Clinically proven Helps increase lean muscle mass, weight, strength & stamina with 40% fewer sets

Formula re: Contains

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 & efficiently 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 improve training results & support muscle protein synthesis Micronized amino acids Faster absorbing, key aminos for better muscle fuel to support muscle protein synthesis & key processes crucial to gaining mass

General Statements: All Other Content

If it's on our labels, then it's in our bottles. Full dosing, full transparency and no proprietary blends. Clinically studied ingredients backed by real science. Get massive. Get advanced muscle performance.

Supplement Facts Panel

Supplement Facts
Serving Size 205 Gram(s)
Servings Per Container 13
Amount Per Serving% Daily Value*
Calories
750 Calorie(s)
Total Fat
6 Gram(s)8%
Cholesterol
100 mg33%
Total Carbohydrates
123 Gram(s)45%
Protein
50 Gram(s)
Calcium
560 mg43%
Iron
5.1 mg28%
Sodium
720 mg31%
Potassium
1320 mg28%
Tri-MG Infusion
3 Gram(s)
Creatine Matrix Blend
3 Gram(s)
Micronized Amino Acids
500 mg

* Percent Daily Values are based on a 2,000 calorie diet.

† Daily Value not established.

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