Claritine - Medicine for allergy treatment

This article was medically reviewed by M.Pharm, Marko Tanaskovic on August 12, 2018. To read more about an author, click here.

Claritine is a medicine that contains an active substance called loratadine. It belongs to a group of medicines known as H1 antihistamines. It is used to treat allergic conditions, especially allergic rhinitis (inflammation of the nasal mucosa that is manifested by runny nose and sneezing) and hives (urticaria).


Although this medicine is used to treat allergic conditions allergic reaction to this medicine is also possible. Patients allergic to the active substance loratadine or other similar drugs (such as desloratadine) should avoid this drug.

Claritine should be avoided in patients with liver disease.

If you are planning to do a skin prick tests in the near future (within two weeks), you should stop taking this medicine before you get an allergy test.

If you are experiencing any symptoms of liver damage, such as:

  1. loss of appetite,
  2. jaundice (yellowing of the skin and eyes),
  3. nausea,
  4. vomiting,
  5. pain in the right upper abdomen
  6. or abdominal swelling

contact your doctor immediately.

Use during pregnancy and breastfeeding

Claritine can be used during pregnancy only if the benefit to the mother outweighs the risk to the child. There are insufficient safety data of using this medicine during pregnancy.

Claritine passes into breast milk therefore you should avoid breastfeeding while using this medicine.

How to use

The usual dose in patients above the age of 12 is one Claritine tablet or 10 mg once a day.

In children under the age of 12 years, the dose should be determined basis on body mass, as following:

  • For children whose body mass is greater than 35 kg, the usual dose is 10 mg (one tablet) once a day
  • For children whose body weight is less than 35 kg, syrup should be used instead of tablets, in a dose of 5 mg per day.

Claritine can be taken regardless of meals, because it is not affected by food in your stomach.

Swallow the tablet whole with a glass of water. Do not crush or chew the tablet, as this may change Claritine efficacy.

Use with other medicines (Interactions)

It should be avoided in combination with the following drugs:

  • Drugs used in the treatment of bacterial infections (antibiotics), such as:
    • erythromycin,
    • clarithromycin,
    • azithromycin (Hemomycin) and others. These drugs may increase the levels of Claritine in the blood, increasing the risk of side effects.
  • Drugs used in the treatment of fungal infections (antimycotics), such as:
    • clotrimazole,
    • fluconazole,
    • ketoconazole and others. These drugs may increase the levels of Claritine in the blood and cause side effects.
  • Drugs used to treat epilepsy, such as:
    • phenytoin,
    • phenobarbital,
    • carbamazepine, and others. These drugs may increase the levels of Claritine in the blood and cause side effects.
  • St. John's Wort.

Tell your doctor about all medications and herbal products you are taking.

Side effects

It may cause the following side effects:

  1. headache,
  2. dizziness,
  3. nausea,
  4. vomiting,
  5. dry mouth,
  6. fatigue,
  7. rapid heartbeat (tachycardia),
  8. high blood pressure (hypertension),
  9. hair loss (alopecia),
  10. fatigue,
  11. weakness,
  12. liver damage accompanied by jaundice (yellowing of the skin and eyes),
  13. allergy and others.

Tell your doctor if you are experiencing any side effects.

Information on this website are provided for educational purposes only and are not intended for medical advice, diagnosis or treatment.

If you have any concerns or questions about your health, you should always consult with a physician or other health-care professional.

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