Same molecule, same titration schedule, same missed-dose window — sold under two names for two different approvals. The dosing math doesn't change; the box it ships in does.
Mounjaro and Zepbound are both tirzepatide, made by Eli Lilly, on the identical weekly titration schedule with the same 4-day missed-dose window. Unlike Ozempic and Wegovy, the milligrams themselves don't even differ — only the approved use does.
Per Mounjaro and Zepbound (tirzepatide) prescribing information, Eli Lilly. Not medical advice — dosing and any brand switch should be confirmed with your prescriber.
Per official prescribing information · not medical advice — confirm changes with your prescriber
Same 4-day window, same titration steps either way. Pick your brand name once — nothing else about the schedule changes.
If your prescriber moves you from Mounjaro to Zepbound or back, your dose stage and shot history carry on.
Every reminder and window is checked against Eli Lilly's official labeling — not a generic rule of thumb.
One email at launch · free trial · no credit card