What should you do if a Mounjaro injection leaks or you are unsure the full dose was given?

If your Mounjaro injection for weight loss leaks or you suspect the full dose wasn't delivered, do not redial the dose or inject again to avoid overdose risks. Check the dose window: if it shows the [-0] icon, the full dose was given even if a drip appears at the needle tip, which is normal. Contact your doctor or prescriber right away for advice - do not skip your next scheduled dose without guidance.

Never repeat the dose: Redialling or injecting extra risks side effects; wait for professional advice.
Verify the window: [-0] icon confirms full delivery; a small leak post-injection is common and doesn't mean failure.
Seek help promptly: Contact your doctor, clinic, or private prescriber if unsure.
Prevent future issues: Hold pen steady for 5-10 seconds, use a new needle, rotate sites (abdomen, thigh, upper arm).

This text has been fact-checked for accuracy by Sorin Romaniuc, Pharmacist at medino.