Optimum nutrition gold standard pro gainer - vanilla custard supports muscle recovery and calorie intake. Gold standard pro gainer is a high protein formula delivering calories that count during recovery. Each shake provides ample supplemental protein, carbs, vitamins, and minerals to build on the amount you're getting through a balanced diet of food. 650 calories 60 g of protein banned substance tested. Optimum nutrition pro gainer - vanilla custard (14 servings) 5 lbs