Optimum Nutrition (ON) Serious Mass Gainer is the ULTIMATE weight gain formula for those who need Serious weight gain. ON Serious Mass Gainer will give that extra calorie to develop the physique you’ve always wanted!
In Each serving of Optimum Nutrition (ON) Serious Mass Gainer you will get over 1,250 calories which contain 50 grams of protein, 256 grams of carbohydrates, 25 vitamins & minerals, glutamine, and creatine. It’s time to gain serious weight gain with Serious Mass.
What Does Optimum Nutrition (ON) Serious Mass Gainer Do?
Each serving of ON Serious Mass delicious shake delivers an incredible 1,250 calories for the growth of lean muscle mass. With no added sugar. This includes 50 grams of blended protein to support muscle growth.
When Is The Best Time To Take Optimum Nutrition Serious Mass Gainer?
Mix up 2 scoops (334 g) of ON Serious Mass Gainer with milk or water in your shaker and enjoy between meals and on post-workout and/or before bed.