What is Serious Mass: Optimum Nutrition Serious Mass is a high calorie weight gainer which is also high in protein and when taken over time with regular resistance exercise and a balanced diet can help you gain mass and muscle, Who Needs Serious Mass: People with very active metabolism that struggle to gain weight; Athletes or anyone who has extremely high energy needs that can-not be met only with food What's in Serious Mass: 1200+ Calories, 50 Grams of high quality Protein and over 250 Grams of Carbohydrates per serving with 23+ Vitamins & Minerals, Creatine & Glutamine When to Consume: Use post-workout and/or between meals to add calories, carbs and protein to your healthy, balanced diet. Authenticity - SMS ON <space> 6 digit unique code on the pack to 57575 or visit our website Authenticateon.in to instantly check the authenticity of the product. Purity - The neck of the tub is sealed with an induction vented liner inside the cap. The product has a plastic shrink wrap seal around the cap (outside) for protection. Our Ingredients are imported from Europe. Blending is done at a world class facility in India. Country of Origin: India (Product designed in the USA). Manufactured for OPTIMUM NUTRITION, INC. By Tirupati Lifesciences at Tirupati Wellness LLP, Surajpur, Nahan Road, Paonta Sahib Dist. Sirmour- 173001 (HP).