GNC Pro Performance AMP Amplified Mass XXX - Vanilla 6 Lb(s)
Need to pack on the pounds? AMPlify your gains with Amplified Mass XXXTM - our best mass gainer ever.* Exclusive to GNC, this rock solid formula is engineered with ingredients proven to help you increase lean mass, weight, strength and stamina.** Muscle up your diet with Amplified Mass XXXTM - the ultimate lean mass builder.  Available in Vanilla, Chocolate, Strawberry, Cookies & Cream and Banana Cream.