Two scoop serving of Optimum mass gainer powder has 1250 calories, just what your body needs to gain weight fast, and speed up muscle gain. A single serving of Optimum Nutrition Serious Mass Weight Gainer protein gives you 50 gram protein per serving and good as meal replacement. Truth is t...
Frequently asked questions on Weight Gainer Supplements 1. When to take mass gainer for best results? 2. Can I mix my mass gainer with milk or water? Which is better? 3. Are mass gainers safe? 4. Can mass gainers be used by vegetarians and vegans?