How to Dispose of Insulin Pens

The US Food and Drug Administration (FDA) lists auto-injectors, including insulin pens, as sharps. It describes them as syringes filled ahead of time with liquid medicine, made to be injected by the user. Arkansas's health department also lists insulin pens as sharps in its 2026 flyer. Boston's public health commission names GLP-1 medicines that come in syringes among the sharps its drop-off sites take. A pen needle is a sharp too: California's legal definition and the Maine and Texas environmental agencies all list pen needles as sharps.

This page does not name any brand of pen and does not give any advice about medicine. For your own pen, read the instructions that came with it. They are the only source for that exact device.

What to do with a pen body after its needle is off is not covered by the state pages we read. Check the instructions for your pen and your local rules.

1. Right after the injection, put the used pen needle, or the whole auto-injector pen, into a sharps container. The FDA says to do this right away to cut the risk of needle sticks.
2. Do not recap, bend or break a needle used by someone else, the FDA says.
3. When the container is about three quarters full, seal it.
4. Follow your state and county rules for the full container. Use the sharps disposal finder to see your state's rule.

Some states ban sharps from the trash. See sharps container disposal for the list.

We read these pages on October 6, 2026 and noted what each one says. A dash means the page does not say.

No page told people to put a used pen loose in the trash.

The FDA says to carry a small travel sharps container when you leave home. Public bins are not everywhere. In a 2022 survey of California's 30 commercial airports, 18 answered. Of those, 11 said they had some sharps disposal, and only 6 of 13 survey replies said they had bins in more than half their restrooms (Zhang and others, 2022).

Rules differ. Hennepin County in Minnesota says its drop-off sites do not take unused medicine inside sharps, such as prefilled pens. Boston's public health commission says its syringe drop-off sites take used or unused sharps, including medicines that come in syringes, at no cost. So ask your drop-off site before you bring a pen that still holds medicine. Medicine drop boxes are for medicines, not needles. Where to get a sharps disposal container explains how to find one, and sharps mail-back programs explains shipping it.