Instead, it works by building up in your muscles over time
Without sufficient protein, patients risk losing substantial muscle mass alongside fat tissue, which can reduce metabolic rate, impair physical function, and compromise long-term weight maintenance
Documented side effects are usually mild to moderate: Injection-site pain, redness, or bruising Flushing Increased heart rate Nausea or gastrointestinal upset Headache Urinary changes or a fishy body odor at higher choline doses Because these are compounded products, sterile technique, pharmacy sourcing, and formulation verification matter
Retatrutide Phase 2 RCT (human): Jastreboff et al., Retatrutide, a GIP, GLP-1 and glucagon receptor agonist, for type 2 diabetes, The Lancet , 2023 PubMed
Always follow the manufacturer's instructions or consult a healthcare professional for personalized guidance