Optimum Nutrition | On Pro Gainer - 2.38Kg-Double Chocolate Mass Gain Supplement Optimum Nutrition | Double Chocolate | Double Chocolate | Optimum Nutrition Pro Complex Gainer - 2. 38Kg Putting On Size Requires A Balnce Of Heavy Training And Quality Nutrition. Because Everyones Different, Some Have A Harder Time Packing On Muscle Than Others. Pro Complex Gainer Is A High-Protein Formula Delivering Calories That Count. Each Shake Provides Ample Supplemental Protein, Carbohydrates, Vitamins And Minerals To Build On The Amount You\'re Getting Through A Balanced Diet. Use Pro Complex Gainer As Your Post-Workout Shake And/or High-Protein Snack Between Meals. Key Facts: 60 Grams Of Quality Proteins Per Serving. 85 Gramsof Carbohydrates Per Serving. 25 Vitamins And Minerals. Ideal For Stacking With On\'s Micronised Creatine Powder. | On Pro Gainer - 2. 38Kg-Double Chocolate