Optimum Nutrition Serious Mass Weight Gain Powder


Name Optimum Nutrition Serious Mass Weight Gain Powder
Brand Optimum Nutrition
Serving Size 334g
Category Mass Gainer
Rating (2 votes)

Nutritional Information

Per 100g Per Serving
Calories 376kcal 1255.84kcal
Protein 15.9g 53.11g
of which sugars
Fat 1g 3g
Salt 0g 0g
Creatine 1g 3.34g
L-Glutamine 500mg 1670mg
Glutamine Peptides 500mg 1670mg
Choline 250mg 835mg
Inosito 250mg 835mg
PABA 5mg 16.7mg

Indepth Contents

Complex carbohydrates, proprietary protein blend (whey protein concentrate, calcium caseinate, egg albumen, l-glutamine), artificial flavor, serious mass vitamin and mineral blend (potassium phosphate, choline bitartrate, magnesium aspartate, beta carotene, inositol, d-calcium pantothenate, zinc citrate, ascorbic acid, boron amino acid chelate, niacinamide, manganese glycinate, kelp, d-alpha tocopherol succinate, ferrous fumarate, copper gluconate, thiamin mononitrate, riboflavin, pyridoxine hydrochloride, para-aminobenzoic acid, chromium picolinate, selenium glycinate, molybdenum glycinate, vitamin d3, folic acid, biotin, cyanocobalamin), medium chain triglycerides, creatine monohydrate, acesulfame potassium.

Optimum Nutrition Serious Mass Weight Gain Powder

What is Optimum Nutrition Serious Mass?

Optimum Nutrition's Serious Mass is the ideal weight gain formula. If you find it difficult to gain weight, Serious Mass could help. Each delicious shake delivers an incredible 1,250 calories, with no added sugar. This includes 50 grams of blended protein to support building muscle and 250 grams of carbohydrates to fuel your workouts.

- Each delicious shake contains 1,250 calories, with no added sugar
- Every serving delivers 50 grams of blended protein to support building muscle
- 250 grams of carbohydrates to fuel intense workouts and help replenish glycogen stores
- Includes 25 vitamins and minerals, creatine, glutamine and MCT
- Contains less than 5 grams of fat per serving


To make your shake, simply mix up 2 scoops of Serious Mass powder with milk or water in your ON shaker and enjoy between meals, post-workout and/or before bed.

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Great product

Great product. If I'm struggling to eat at a caloric surplus on any given day, this has allowed me to give me that extra boost to reach it. It tastes great (but really really sweet)t.

The scoop size is huge and they recommend that you use two scoops per serving but I only use one scoop per serving (after workout) and it does the job. However, most of the time it really depends on how much calories I need to consume to reach my surplus.


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