The short answer
- Expired Nurofen tablets: one dose is very unlikely to be harmful, but they may be weaker. Replace the pack.
- Liquid capsules and children’s syrups degrade sooner; don’t use them past expiry, and use syrups within the period stated after opening.
- Return expired medicines to a pharmacy rather than binning or flushing them.
What the expiry date actually means
An expiry date is the last date the manufacturer guarantees the product contains at least the labelled amount of active ingredient (usually 90–95% or more) and meets all quality standards, if stored as directed in its original pack. It’s based on stability testing and set conservatively. Most ibuprofen tablets have a shelf life of 2–3 years from manufacture.
After that date, nobody has tested the product, so nobody can tell you how much ibuprofen is left. That uncertainty is the main reason to replace expired medicines.
What the research shows
The US Shelf Life Extension Program (SLEP) tested military stockpiles of medicines kept in ideal warehouse conditions. A 2006 analysis found that about 88% of the lots tested could have their expiry extended by at least a year, many by several years, because they still met potency standards. Ibuprofen tablets are generally stable.
That doesn’t translate perfectly to home: bathroom cabinets are warm and humid, blister packs get opened, and bottles are left in hot cars. Heat and moisture speed up breakdown, and a degraded tablet may also crumble or discolour.
Which expired medicines matter most?
| Product |
After expiry |
| Nurofen, generic ibuprofen tablets |
Probably weaker; low risk; replace |
| Nurofen liquid capsules (gel) |
Capsules can soften or leak; replace |
| Children’s Nurofen or Panadol syrup |
Don’t use; follow the “use within” date after opening |
| Paracetamol tablets |
Probably weaker; replace |
| Antibiotics |
Don’t use: weak antibiotics may fail and drive resistance (see expired doxycycline) |
| Insulin, GLP-1 pens |
Don’t use |
| Adrenaline auto-injector |
Replace before expiry; in an emergency, use an expired one if it’s all you have |
| Glyceryl trinitrate (angina spray/tablets) |
Replace; tablets lose strength once the bottle is opened |
| Eye drops |
Discard 28 days after opening, regardless of expiry |
How to make medicines last until their expiry date
- Keep them in the original pack, below 25 °C, away from the bathroom and kitchen steam.
- Don’t leave painkillers in the car or a hot handbag.
- Check the medicine cabinet once a year and return anything expired.
- Write the opening date on liquids, eye drops and creams.
More on storage and disposal is in our guide to taking medicines correctly.
Frequently asked questions
I took expired Nurofen. What should I do?
Nothing special: watch whether it relieves your pain, and replace the pack. If you took more than the recommended dose, that matters more than the expiry date; ask a pharmacist or poisons centre.
How long is Nurofen good for after the expiry date?
There is no official answer. Tablets stored well may retain most of their strength for some time, but there is no way to know for your pack, so replacement is the advice.
How long is amoxicillin good for after it has been mixed?
Reconstituted amoxicillin suspension is usually good for 7–14 days, often refrigerated, depending on the brand. Discard any left over after the course or after the date on the label.
Can expired medicines become toxic?
Rarely. The often-quoted example is old tetracycline formulations from the 1960s that caused kidney damage after degrading; modern formulations differ, but it’s one reason antibiotics shouldn’t be used past expiry.
Sources and further reading
CanforaMedicine Guide
