F
N+ Score58
Joint & BoneServing: 209.5 Gram(s)Type: Other Combinations

GNC AMP Advanced Muscle Performance Mass XXX Strawberry is a high-calorie mass gainer, categorized under Joint & Bone, though its primary function is muscle support. Each 209.5-gram serving delivers 800 calories, 50g of protein, and a substantial 127g of carbohydrates. It provides clinically relevant doses of Calcium (475mg) and Potassium (750mg), but Iron (2mg) is underdosed. The product also includes a 6.15g Power Plus Blend, which lacks specific ingredient transparency. With 10 ingredients, it receives an N+ Score of 58 and an 'F' grade, indicating an average product. It is ideal for individuals focused on significant calorie and macronutrient intake for muscle mass gain.

About This Product

Mass XXX Strawberry by GNC AMP Advanced Muscle Performance is a joint & bone supplement containing 10 active ingredients. It has earned an N+ Score of 58/100 (Grade F).

Notable clinical-dose ingredients include Calcium, Potassium.

N+ Score Breakdown

Ingredient Adequacy33/100

Are key ingredients present at clinically effective doses based on research?

Formula Completeness25/100

Does the product include all expected ingredients for its supplement category?

Label Transparency100/100

Are individual ingredient amounts clearly disclosed without proprietary blends?

Ingredient Diversity100/100

Does the formula include a breadth of beneficial compounds from multiple pathways?

Strengths

  • +Fully transparent label with individual ingredient amounts disclosed
  • +Broad ingredient diversity exceeding category norms
  • +2 ingredient(s) at clinical dose levels

Weaknesses

  • Several ingredients below clinically effective doses
  • Missing several expected ingredients for its category

Ingredient Analysis (10 ingredients)

IngredientAmountDose Adequacy
Calories800.000 Calorie(s)N/A
Total Fat5.000 Gram(s)N/A
Calcium475.000 mgAdequate
Iron2.000 mgUnder
Total Carbohydrates127.000 Gram(s)N/A
Sodium600.000 mgN/A
Potassium750.000 mgAdequate
Cholesterol100.000 mgN/A
Protein50.000 Gram(s)N/A
Power Plus Blend6.150 Gram(s)N/A

Clinical ranges based on NIH ODS Fact Sheets and peer-reviewed research. Status indicates whether the amount meets evidence-based thresholds.