Optimum Nutrition Serious Mass Weight Gainer (Chocolate Peanut Butter) 6 lb vs Mutant Mass Gainer Cookies and Cream 5 Pound

Overall winner: Optimum Nutrition Serious Mass Weight Gainer (Chocolate Peanut Butter) 6 lb

Key Differences

Optimum Nutrition (A) offers an extremely calorie-dense formula with 50 g protein and 250 g carbohydrates per 2-scoop serving, making it suited for users seeking maximal mass gain; Mutant (B) emphasizes a gourmet cookies-and-cream flavor and strong protein but has mixed feedback on calorie content and some reports of stomach cramps. A has a lower listed price tier and far more user reviews with a slightly higher average rating, while B is positioned as a flavorful alternative with fewer reviews

Optimum Nutrition Serious Mass Weight Gainer (Chocolate Peanut Butter) 6 lb

Optimum Nutrition Serious Mass Weight Gainer (Chocolate Peanut Butter) 6 lb

Optimum Nutrition • ★ 4.3/5 • Mid-Range

Weight gainer powder with high calories, protein, and carbs plus vitamins and minerals for immune support. Customers note effective weight gain and good taste; mixability varies

Pros

  • high-calorie weight gainer
  • protein and carbohydrate per serving
  • includes vitamins and minerals for immune support
  • versatile—blend with fruits

Cons

  • large serving size per serving
  • mixed reviews on mixability
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Mutant Mass Gainer Cookies and Cream 5 Pound

Mutant Mass Gainer Cookies and Cream 5 Pound

Mutant • ★ 3.9/5 • Mid-Range

Mass gainer with 56 g protein, 192 g carbs and 1100 calories per serving. Customer note: great taste and effective for muscle gains, with mixability in milk or water

Pros

  • high protein per serving
  • high calorie per serving
  • rich in amino acids (EAAs and BCAAs)
  • gourmet taste

Cons

  • calorie content viewed variably by customers
  • some reports of stomach cramps
Check current price on Amazon →

Head-to-Head

CriteriaWinner
Price Optimum Nutrition
Durability Tie
Versatility Optimum Nutrition
User Reviews Optimum Nutrition