The NSW Poisons Information Centre said about 5000 children were hospitalised due to household medicine poisonings every year.

The situation is worse for under fives, with children aged one to three most at risk.

The Return Unwanted Medicines program is calling on people to inspect their cupboards and drawers, identify expired medicines and take them to a pharmacy where they can be disposed of properly.

It said people should avoid putting unwanted medicines in the bin or pouring them down the sink as it could cause environmental damage.

A spokesman said getting rid of expired medicines and storing unexpired medicines around the home out of the reach of children was important.

“Storing expired medicines might seem trivial but it poses a potential health risk to you and your family.”

“The expiration date printed on the medicine bottle or label is the last date that the manufacturer guarantees its full potency and safety.

“Expired medicines may be less effective or hazardous due to a change in chemical composition or a decrease in strength.”

Once opened liquids, pills and creams are subject to air exposure which slowly degrades the medicine.

The Poisons Information Centre said children had also been poisoned at home from swallowing eucalyptus and other oils, batteries and laundry and cleaning products.