Sooner or later almost everyone misses a dose — the mistake isn't missing it, it's handling it wrong. The right move depends on how close you are to your next scheduled dose and which drug you're on, and the one universal rule is simple: never double up.
Why this isn't a one-size-fits-all answer
Missed-dose guidance for GLP-1 medications depends on two things: how long it's been since the missed dose, and which specific medication you're on (weekly injections and daily injections follow different logic). Getting this wrong matters in both directions — taking a dose too close to your next one risks compounding side effects, while skipping a dose incorrectly can disrupt your titration progress or blood sugar control. This guide covers the general framework; always confirm the specific rule for your medication with the patient information that comes with your prescription or with your pharmacist, since exact windows vary by drug and are stated precisely in official labeling.
The general framework for weekly injections
For once-weekly medications (semaglutide, tirzepatide), the general pattern used across the class is: if you're still within several days of your missed dose, take it as soon as you remember and then resume your regular weekly schedule from that new date, or return to your original schedule — this specific detail varies by drug. If too much time has passed before you remember (generally getting close to your next scheduled dose), the typical guidance is to skip the missed dose entirely and take your next dose on the regularly scheduled day, not doubling up. The exact day-count threshold differs between medications — this is precisely the kind of detail to check against your specific medication's patient information rather than assume.
The general framework for daily injections
For once-daily medications (liraglutide), missed-dose guidance is generally more time-sensitive given the shorter half-life — typically involving a same-day catch-up window, with guidance to skip and resume the normal schedule if too much time has passed, again without doubling up.