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Retatrutide builds on everything tirzepatide does and adds the glucagon receptor component
Mechanistic Insight Interestingly, only ~52% of the improvement in insulin resistance (HOMA2-IR) appears attributable to weight loss, pointing toward an additional GIP-mediated metabolic effect with tirzepatide
Additionally, during adipogenic differentiation, Liraglutide suppressed the mRNA expression of GSK-3/ more effectively than insulin, despite similar protein levels
Sano Mary et al
Fatigue is specifically listed as a common adverse reaction (occurring in 5% of patients) in Wegovy clinical trials, though it is less prominently featured in Ozempic labeling
