Optimum Nutrition Serious Mass is the brand’s highest-calorie gainer: up to 1,260 kcal, 50 g fast-digesting whey protein, up to 253 g carbs and 5 g creatine monohydrate per serving. Plus 8 g naturally occurring glutamine, 11 g BCAAs and 19 vitamins and minerals — for hard gainers. Banned substance tested. Key benefits: • Up to 1,260 kcal • 50 g whey protein • 5 g creatine • 19 vitamins & minerals In one serving (~340 g — ~2 heaping scoops): Energy — 1,250–1,260 kcal; Protein — 50 g; Carbohydrates — up to 253 g; Creatine monohydrate — 5 g; Glutamine (naturally occurring) — 8 g; BCAAs — 11 g. The pack provides 8 servings. How to take: Blend 340 g (about 2 heaping scoops) with cold water, milk or another drink for 30–45 seconds. New users may start with half a serving for the first week. Brand — Optimum Nutrition (USA). Original product from an official supplier.

Blend 340 g (about 2 heaping scoops) with cold water, milk or another drink for 30–45 seconds. New users may start with half a serving for the first week.