How retatrutide compares to tirzepatide and semaglutide Direct head-to-head Phase 3 data between retatrutide, tirzepatide, and semaglutide does not exist yet (TRIUMPH-5 is the closest trial currently running in the diabetes population)
A journal article in The Journal of the Endocrine Society featured the case of a 31-year-old female with obesity who bought semaglutide from a compounding pharmacy and injected the drug incorrectly at 2.5mg/0.5mL, ten times the amount prescribed
Individual metabolic differences may influence response time, though the relationship between baseline characteristics and onset of effects requires further study
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However, comparing the two directly, some research suggests that Semaglutide GLP-1 may offer a slight edge in overall weight reduction percentages