What it is used for

Hay fever and other allergies affecting the nose and eyes
Hives (urticaria)

Read our guides:

Off-label uses

Doctors sometimes prescribe a medicine for a condition it is not officially licensed for. This is called off-label use. It is legal and common when there is good evidence it helps, and your doctor should explain why they are suggesting it.

Itching from eczema or insect bites (it may help some people a little)

How it works

Loratadine blocks histamine, which the body releases during an allergic reaction. This reduces sneezing, itching, a runny nose and watery eyes.

Side effects

Like all medicines, Loratadine can cause side effects, although not everyone gets them. Many are mild and ease after the first few weeks.

Common side effects

headache
feeling tired
feeling sleepy (less than older antihistamines)

Tell your doctor or pharmacist if these bother you or do not go away.

Serious side effects

These are rare. Call 111 or contact your doctor straight away if you get:

a fast or irregular heartbeat
fits

Call 999 if you have signs of a serious allergic reaction, such as swelling of your lips, mouth, throat or tongue, or trouble breathing.

You can report any side effect to the Yellow Card scheme, run by the medicines regulator.

Stopping and withdrawal

Important safety information

Ask a pharmacist before taking it if you have liver problems or epilepsy.

Questions about your medicine?

A pharmacist can answer questions about your medicines for free, without an appointment. You can also ask your GP for a medication review. Check if you can get free prescriptions.