Serious Mass by Optimum Nutrition (ON)


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  • Benefit – High calorie weight gainer which also helps in muscle building and approx 1,250 calories per serving (2 Scoops)
  • 50 grams of protein per serving and over 250 grams of Carbohydrates per serving
  • 25 Vitamins & Minerals plus Creatine & Glutamine
  • When to consume – between meals, after weight training, before going to bed
  • Authenticity – SMS us your 6 digit unique code on the pack at 57575 or visit our wesite to instantly test the authenticity of the product
  • How to prepare – Using an electric blender to add fresh or frozen fruits, peanut butter, nuts & other calorie dense foods to boost your weight gain potential – 2 scoops per 710 ml in milk or water
  • On all the protein tubs you will find blue ink jet printing listing a manufacturer date, expiration date and batch code. There may be slight difference with the actual product and the images displayed
  • ON Serious Mass 12 LBs pack is formulated and designed in the US but now as part of the Make In India initiative
  • Manufactured in India, in a facility that is ISO 14001 & 22000 certified and Inspected & Approved by Food Safety Standard Authority of India. Whey Imported from US


Optimum Nutrition

Additional information

Weight N/A

Chocolate, Vanilla


12 Lb (5.5kgs), 3 Lbs (1.36kgs), 6 Lbs (2.7kgs)