Optimum nutrition pro gainer is a fantastic protein shake that can be taken at any time during the day or nightr it is perfect for anyone wanting to increase their calorie intake and do it without the added sugar or fat contentr optimum nutrition pro gainer protein shake delivers 60g of premium protein 656 calories and 85g of carbohydrate per serving with only 5g of sugar and 8g of fatr the optimum pro gainer also provides you with dietary fibre digestive enzymes vitamins and essential m