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Opto Mass Gainer! Each serving contains a whopping 40 grams of protein and enriched with essential amino acids (EAAs), branched-chain amino acids (BCAAs), glutamine and creatine, providing comprehensive support for muscle growth and recovery. This formula is loaded with nutrient-dense calories derived from high-quality, fast, medium, and slow-digesting proteins and healthy fats and added vitamins and minerals to deliver a nutrient-dense blend.

Mass Gainer

$49.99