Understanding Medicine Expiry Dates and Storage Guidelines

We’re used to checking expiry dates on food — but did you know the same is just as important when it comes to your medicine cabinet? Whether it’s a prescription tablet, a liquid antibiotic, or an over-the-counter pain reliever, every medicine comes with an expiry date and specific storage instructions for a very good reason.

Let’s break down what those dates and guidelines really mean, and how following them can keep you safe and help your medicine work as it should.

What Does a Medicine Expiry Date Really Mean?

The expiry date is the final day the manufacturer guarantees the medicine will be fully effective and safe to use — as long as it’s been stored correctly.

After this date, the active ingredient may start to break down, meaning the medicine might not work as well — or at all. In rare cases, degraded ingredients could even cause harm.

It’s not worth taking the risk, especially when the alternative is a fresh, safe supply.

What Happens if You Take Medicine After the Expiry Date?

It depends on the medicine, how far past its expiry it is, and how it’s been stored. For example:

• Some tablets may simply lose potency slowly.
• Liquid medicines can spoil or grow bacteria once opened.
• Antibiotics like liquid penicillin or reconstituted amoxicillin are especially risky — they break down quickly and must be discarded after a set number of days.
• Injectables or eye drops can become contaminated, posing a serious infection risk.

In all cases, if in doubt — throw it out. Better safe than sorry.

Storage Matters: Why the Right Conditions Are Crucial

Even before the expiry date, medicine must be stored correctly to maintain its quality.

Most medicines should be kept:

• In a cool, dry place (typically below 25°C unless stated otherwise)
• Away from direct sunlight or damp (so not your bathroom cabinet!)
• In their original packaging, which protects from moisture and light

Some products, like certain insulin vials, probiotics, or eye drops, need refrigeration. Always read the label or ask your pharmacist if you’re unsure.

Opened vs Unopened: Is There a Difference?

Yes — many medicines have a much shorter shelf life once opened. For example:

• Antibiotic suspensions may only last 7–14 days after mixing.
• Eye drops are typically safe for 28 days after opening.
• Creams and ointments may become less effective or contaminated over time.

Always check the label for “use within” instructions and write the date of opening directly on the packaging when possible.

Safe Disposal of Expired Medicines

Don’t throw medicines in the bin or flush them down the toilet. Take any expired or unwanted medicines back to your local pharmacy, where they can be safely disposed of. This protects the environment and keeps medicines out of the wrong hands.

In Summary

Expiry dates and storage guidelines aren’t there for show — they’re essential for keeping your medicine safe, effective, and reliable. Always check dates, store correctly, and don’t hesitate to speak to your pharmacist if you’re unsure.

Taking medicine safely means more than just the right dose — it means knowing when to take it, where to keep it, and when to let it go.