OPTIMUM NUTRITION (ON) Serious Mass Gainer (Veg) High Protein High Calorie Weight Gainer - 5 kg (Vanilla) with Vitamins & MineralsNow Suitable for Vegetarians SERIOUS MASS is the ultimate weight gain and muscle building formula. With +1200 calories per 2-scoop serving and 50 grams of protein to support muscle recovery this powder makes the ideal post-workout and between meals shake for sizing up your goals. SERIOUS MASS provides you with the tools you need to support your weight gains goals.Optimum Nutrition (ON) Micronized Creatine Powder - 250 Gram 83 Serves 3g of 100% Creatine Monohydrate per serve Supports Athletic Performance & Power Unflavored.Creatine is naturally produced in our body and it is used in the recycling of ATP which is our bodyâs energy currency. Creatine monohydrate is one of the most well-researched sports nutrition ingredients. When used in combination with regular weight training it has been shown to support athletic performance and power.