Why does tirzepatide stop working?

This site does not hold a citation that measures tachyphylaxis or a date when tirzepatide stops working for a person. The trial windows it does hold are SURMOUNT-1 at 72 weeks (2,539 adults without diabetes; up to 20.9% mean weight loss on 15 milligrams), SURMOUNT-OSA at 52 weeks, and SURPASS-2 at 40 weeks against semaglutide 1 milligram. SURPASS-CVOT compared cardiovascular events in 13,299 people and did not report a stopped-working analysis. Missed doses, a change in diet, and a research-chemical vial that is not Mounjaro or Zepbound are common non-drug reasons a response can look weaker. Those belong with a clinician, not a percentage this FAQ will invent. Full record at /compounds/tirzepatide.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of glp-1 and metabolic peptides. Semaglutide, tirzepatide, retatrutide, and the rest of the incretin and glucagon receptor family.