Unused Latanoprost: Practical Guidance for Safe Use and Storage

If you have some unused latanoprost eye drops, you might wonder what to do with them. Maybe you stopped treatment sooner than expected, or maybe your prescription changed. Whatever the reason, it’s important to handle leftover medication the right way.

Latanoprost is commonly prescribed for glaucoma to reduce eye pressure. Keeping it effective means storing it properly—usually in the fridge before opening, then at room temperature once opened—and watching expiration dates carefully. Using expired or improperly stored drops won’t deliver the benefit you need and could even cause irritation.

Is It Safe to Use Expired or Unused Latanoprost?

Many people hold onto eye drops past their expiration date, but that’s not a great idea with latanoprost. The potency can fade, and bacterial contamination risk grows once you open the bottle. If your drops look cloudy, change color, or cause irritation, it’s best to stop using them immediately.

Also, avoid sharing your eye drops with others—even family members. Eye infections spread easily, and medications should be for your eyes only.

What Should You Do with Leftover Drops?

Don’t toss unused latanoprost down the drain or flush it. Proper disposal helps protect the environment and prevents accidental use by others. Check if your local pharmacy has a take-back program—many do and will safely dispose of leftover medications for you.

If no take-back options exist near you, seal the drops in their original packaging and throw them in the trash where kids and pets can’t reach. Labeling the bottle as “expired” or “unused eye drops” helps avoid accidental use.

Finally, if you’re unsure about how to handle your unused medication, ask your pharmacist or doctor. They can give advice tailored to your location and health needs. Taking care of unused latanoprost properly keeps you safe and ensures your glaucoma treatment stays effective when you need it most.