Retatrutide and Protein Intake

No retatrutide-specific protein recommendations exist. General obesity medicine guidance recommends higher protein intake (1.2–1.5 g/kg body weight or more) during significant caloric restriction to minimize lean mass loss. Retatrutide substantially reduces appetite, which can inadvertently reduce protein intake — deliberate protein prioritization is important.

Why Protein Matters During Retatrutide Treatment

Retatrutide produces significant appetite suppression through multiple receptor pathways. This reduces overall caloric intake, which is the primary mechanism of weight loss. However, reduced appetite can also reduce protein intake, which is critical for maintaining lean mass during caloric restriction. Adequate protein intake supports muscle protein synthesis and helps minimize lean mass loss.

General Protein Guidance During Weight Loss

General obesity medicine and sports nutrition guidance recommends higher protein intake during significant caloric restriction: typically 1.2–1.5 g/kg body weight per day, with some guidelines recommending up to 2.0 g/kg for those engaged in resistance training. These are general recommendations — no retatrutide-specific protein targets have been established.