Out-of-date medicines

Most of us would never consider eating food past its sell-by date, yet we use out-of-date medicines -without realising they could make us ill.

A survey published last week by Lloyds Pharmacy estimates there are more than 40 million out-of-date prescribed medicines and almost as many over-the-counter medicines in British homes

'There is an expiry date on every medicine, pill and plaster for a reason. Many medications contain preservatives which halt the growth of bacteria. Once it passes its use-by date, these become less effective and bacteria can start to grow.

do deteriorate with age, however, most people will suffer no ill results - although the older the medicine the greater the risk that they will. If someone has just taken a paracetamol a few days after the use-by date they should not panic.'

Use the list below to help make your medicine cupboard safer.

NASAL SPRAYS

Typical shelf life: Three months once opened; if sealed, two years, as long as stored below 30c in a cool area out of direct sunlight.
Health risk if exceeds shelf life: Sinus infection.

CHILDREN'S PAINKILLERS

Typical shelf life: In a bottle, three years; in a sachet, two years. Must be stored below 25c. If not shaken before use could lead to overdose.
Health risk if exceeds shelf life: Nausea.

ANTISEPTIC CREAMS

Typical shelf life: When stored below 25c, three years.
Health risk: Skin irritation.

NIT PRODUCTS

Typical shelf life: 18 months.
Health risk: Headlice become resistant and infestation increases.

EYE DROPS

Typical shelf life: Throw out four weeks after opening. Will keep for three years if unopened, but must be stored below 30c.
Health risk: Eye infection.

HEARTBURN REMEDIES

Typical shelf life: Liquids, two years unopened or six months after opening. Tablets can be kept for two years.
Health risk: Nausea.

Storing medicines incorrectly can be just as bad.
'A use-by date is relevant only if the medicine has been stored under ideal conditions, typically cool and dark with the lid closed,'