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Serious Mass, 50g Protein Powder, Chocolate, 12 lb, 16 Servings

Prices as of September 26, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at Macy's price tracker

14-day low
$114.99
Sep 13 · Macy's
Best price
$114.99
−0% vs high
14-day high
$114.99
All stores
$115$115$115
Sep 13Sep 26
  • Macy's
Lowest in 14 days: $114.99 at Macy's. Highest: $114.99. Current best is 0% below the 14-day high.

What buyers say

AI summary · 178 reviews

A high-calorie, chocolate-flavored mass gainer that delivers strong results for muscle and weight gain, though some buyers note the massive serving size and intense sweetness. A minority find the flavor chalky or overly sweet.

Liked

  • Rich chocolate flavor
  • Smooth mixability
  • High protein content

Complaints

  • Overly large serving size
  • Excessive sweetness
  • Chalky aftertaste

Generated by AI from real customer reviews at Macy's — may miss nuance. Summarized Sep 2026.

About this product

Optimum Nutrition Serious Mass is a high-calorie protein powder formulated to support muscle growth and recovery. Each two-scoop serving provides 1,250 calories, 50 grams of protein, and over 250 grams of carbohydrates. The formula includes creatine monohydrate and glutamine for enhanced recovery, along with calcium, vitamin E, vitamin C, zinc, vitamin D, and 25 additional vitamins and minerals for immune support. This weight gainer is designed as a post-workout supplement suitable for both men and women.

  • 50g protein per serving
  • 1,250 calories per serving
  • contains creatine monohydrate
  • includes 25 vitamins and minerals
  • made in USA
  • chocolate flavor

Based on 178 reviews at Macy's

Read all 178 reviews on Macy's

AskPrice does not host review text. We aggregate the public rating from the retailer and link to the source for full reviews.

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Serious Mass, 50g Protein Powder, Chocolate — Price History