A member asked:

I want to know if optimum nutrition 'serious mass' a safe product? getting confused with so many supplements.. help me please..

A doctor has provided 1 answer

Do not take it: This is a high calorie supplement with a high sugar content. While it also is high protein, its calories per serving are absurdly high and unhealthy.

Answered 10/1/2013

4.8k views

Thank

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