Missing a dose of Trulicity is not dangerous, and the fix is straightforward: if there are at least 3 days (72 hours) before your next scheduled dose, take the missed dose as soon as you remember. If fewer than 3 days remain, skip it entirely and take your next dose on the regular day. The key rule is to never take two doses in the same week.
The 72-Hour Rule
Trulicity is a once-weekly injection, which means you have a wider window to catch up than you would with a daily medication. The cutoff point is 72 hours before your next scheduled dose. Here’s how it works in practice:
- 3 or more days until your next dose: Take the missed dose now. Then resume your regular weekly schedule as planned.
- Fewer than 3 days until your next dose: Skip the missed dose completely. Take your next dose on the normal day.
So if you normally inject on Monday and realize on Tuesday that you forgot, go ahead and take it. But if you don’t remember until Friday or Saturday, skip that dose and just inject on Monday as usual.
Why You Should Never Double Up
Taking two doses too close together raises the risk of side effects, particularly nausea and vomiting. Trulicity works by mimicking a gut hormone that slows digestion and signals fullness. Doubling the dose amplifies those effects in ways your body isn’t prepared for. The FDA prescribing label is explicit: do not double doses to make up for a missed one.
If you accidentally take two doses in the same week, contact your doctor. Too much Trulicity can cause significant nausea and vomiting that may need medical attention.
What Happens to Your Blood Sugar
A single missed dose is unlikely to cause a dramatic spike in blood sugar, but you may notice some changes. Trulicity’s effects taper gradually, so missing one week doesn’t mean the medication vanishes from your system overnight. Still, you might feel hungrier than usual or notice your blood sugar readings creep up slightly.
During the gap, paying attention to portion sizes and eating more fiber-rich vegetables can help offset the temporary loss of the appetite-suppressing effect. If you’re using Trulicity for type 2 diabetes and you monitor your blood sugar at home, checking more frequently during the missed week gives you a clearer picture of how your body is responding.
Changing Your Injection Day
If your current schedule isn’t working and you keep forgetting doses, you can permanently change the day of the week you inject. The only requirement is that at least 72 hours have passed since your last dose. For example, if you’ve been injecting on Wednesdays but Saturdays fit your routine better, just make sure your last Wednesday dose was at least 3 days ago before injecting on Saturday. From there, Saturday becomes your new weekly day.
Setting a recurring phone alarm or linking your injection to a consistent weekly habit (like a specific morning routine) helps prevent missed doses in the first place.
Missing Multiple Doses
One missed dose is easy to manage on your own. Two or more consecutive missed weeks is a different situation. When you’ve been off Trulicity for two weeks or longer, reaching out to your prescribing doctor is the best next step. They may want to adjust your dose, especially if you were still in the process of titrating up to a higher strength. Restarting at the same dose after a longer gap can sometimes increase nausea, so your doctor may recommend easing back in at a lower dose before stepping back up.