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Optimum Nutrition Serious Mass is a high-calorie, high-protein vegetarian weight gainer powder delivering 1200+ calories, 50g protein, and 24 essential vitamins and minerals per serving. Designed for those with fast metabolisms struggling to gain mass, it supports muscle recovery and growth when combined with resistance training. Manufactured in India with imported European whey proteins and certified for quality and safety, itβs your ultimate post-workout and between-meal nutrition boost.








| Manufacturer | Manufactured for OPTIMUM NUTRITION, INC. By Tirupati Wellness Pvt. Ltd. |
| Country of Origin | India |
| Item model number | 1115238 |
| Product Dimensions | 25 x 15 x 15 cm; 750 g |
| ASIN | B09QXTRNW6 |
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