
Do not use any other over-the-counter cold, allergy, or sleep medication without first asking your doctor or pharmacist. If you take certain products together you may accidentally take too much of a certain drug. Read the label of any other medicine you are using to see if it contains an antihistamine or decongestant.

Clarinex helps relieve seasonal and indoor allergy symptoms, as well as chronic hives and itching. It works by blocking histamine -- a chemical in the body that causes sneezing, itching, and irritation when you come into contact with something you're allergic to. Clarinex does not, however, help clear nasal passages. Common side effects, while rare, include nausea, sore throat, and dry mouth.

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise.

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