The Endocrine Society, whose members include scientists and physicians dedicated to hormone research and treatment for hormone-related conditions, says studies have shown that weight loss medications like semaglutide and tirzepatide improve body composition by reducing excess body fat and increasing the proportion of lean body mass
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[DOI] [PMC free article] [PubMed] [Google Scholar] 53.Padayatty S.J., Katz A., Wang Y., Eck P., Kwon O., Lee J.H., Chen S., Corpe C., Dutta A., Dutta S.K., et al
This delay is actually responsible for much of the medication's weight loss benefit, though it produces temporary discomfort as your digestive system adapts
This includes GLP-1 patches. In its 2026 communication on unapproved GLP1 drugs, the FDA noted that unapproved versions of GLP1 drugs, including those sold online, may carry risks because their quality, potency, and sterility cannot be verified
Instead, take your missed dose as soon as you remember, then resume your normal weekly schedule