Can you reuse a Mounjaro pen needle?
No, you cannot reuse a Mounjaro pen needle when using the pen for weight loss injections in the UK. Mounjaro KwikPens are multi-dose for four weekly doses, but each time you must attach a new sterile needle to avoid infections, blocked needles, pain, or bacterial risks. After injecting, safely remove and dispose of the used needle in a UK sharps bin, then recap the pen for storage until the next dose.
- Needles are single-use only: Designed for one injection to prevent infections, dulling, pain, and blockages.
- Pens are multi-dose: Reuse the same KwikPen for 4 weekly Mounjaro doses for weight loss, but always with a fresh needle each time.
- Safe disposal: Twist off the needle, cap it, and put it in a sharps bin from your pharmacy; never bin loose needles.
This text has been fact-checked for accuracy by Sorin Romaniuc, Pharmacist at medino.