AskPrice
37060204.fpx

Serious Mass, Weight Gainer Protein Powder, Vanilla, 6 lb

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
$64.99
Sep 13 · Macy's
Best price
$64.99
−0% vs high
14-day high
$64.99
All stores
$65$65$65
Sep 13Sep 26
  • Macy's
Lowest in 14 days: $64.99 at Macy's. Highest: $64.99. Current best is 0% below the 14-day high.

What buyers say

AI summary · 75 reviews

A high-calorie, effective weight gainer with a smooth, pleasant vanilla taste that many find satisfying and filling. A few buyers note the large scoop size and high carb content, but overall it's praised for delivering on its promise of mass gain.

Liked

  • Smooth, creamy texture
  • Rich vanilla flavor
  • High protein and calorie content
  • Easy to mix without clumping

Complaints

  • Large scoop size requires significant intake
  • High carbohydrate content may be excessive for some

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 designed to support muscle growth and recovery. Each 2-scoop serving provides 1,250 calories, 50 grams of protein, and over 250 grams of carbohydrates. It contains 25 essential vitamins and minerals, along with creatine and glutamine to aid in workout recovery. The vanilla-flavored powder can be mixed with water, low-fat dairy milk, or nut milk for a nutritious shake. It serves as a convenient post-workout supplement or a calorie-dense snack before bed to support muscle repair during rest.

  • 1,250 calories per serving
  • 50 grams of protein
  • Over 250 grams of carbs
  • Contains creatine and glutamine
  • Vanilla flavor
  • Made in USA

Based on 75 reviews at Macy's

Read all 75 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.

You might also like

More from Optimum Nutrition

All 68 Optimum Nutrition products →
Serious Mass, Weight Gainer Protein Powder — Price History