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This review is from: Optimum Nutrition Serious Mass Weight Gain Powder, 2.73 kg - Vanilla (Personal Care)
This does work to put on some mass. You have to consume what seems like a large amount of shake though. This makes you feel like a bloated fish the whole day long. I would use this temporarily and only use half the required amount per shake. If you dont keep your training up you will just put on weight around your mid section.