Antihistamine
Loratadine
Tablet or syrup
Quick Summary
Loratadine is a long-acting antihistamine taken once a day.
Allergic rhinitis
Hives
Medical Uses
Allergic rhinitis: Sneezing and itchy eyes.
Hives: Itchy rash.
How it's taken
Usually taken once a day.
Your doctor decides the right dose for you and how long to take it.
Your doctor decides the right dose for you. Follow their instructions and the label.
Common Side Effects
Headache
Sometimes.
Tiredness
Rarely.
Dry mouth
Sometimes.
Interactions
Few interactions
Generally safe.
Critical Warnings
Liver problems
Ask your doctor.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Loratadine: drug information(opens in a new tab) · MedlinePlus, US National Library of Medicine
- Loratadine (Clarityn): antihistamine that relieves allergy symptoms(opens in a new tab) · NHS