GGR Score: 3.975
Product Highlights
- High-calorie supplement formulated with a 1:5 protein to carbohydrate ratio
- Each serving contains 1,250 calories
- Each serving contains 50 grams of protein, 253 grams of carbohydrates, 4 grams of fat,
- Available in Chocolate, Chocolate Peanut Butter, Strawberry, and Vanilla
- Recommended to use 2 scoops per 24 ounces of fluid taken post-workout or in between meals
In-Depth Review
Optimum Nutrition Serious Mass Review (2026): Is This Popular Weight Gainer Worth the Hype?
Author: Destini Moody, RD, CSSD, LDIn this Optimum Nutrition Serious Mass review, a sports dietitian breaks down the pros and cons of one of the internet’s most popular weight gainers. Read the full review.
Pros & Cons
Pros
- Taste
- High carb to protein ratio
- Includes creatine monohydrate
- Low fat
- Users report it works quickly
Cons
- Does not mix well without a blender
- Contains sucralose
- 20 grams of sugar
Specs
| Flavors | Chocolate, Chocolate Peanut Butter, Strawberry, and Vanilla |
|---|---|
| Calories per serving | 1,250-1,260 |
| Protein per serving | 50 g |
Product Summary
If you do not mind artificial ingredients, Optimum Nutrition Serious Mass is a good-tasting weight gainer with an impressive 1:5 protein to carbohydrate ratio.
