Clarinex Side Effects

Generic name: desloratadine

Note: This document contains side effect information about desloratadine. Some of the dosage forms listed on this page may not apply to the brand name Clarinex.

Some side effects of Clarinex may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

For the Consumer

Applies to desloratadine: oral solution, oral tablet, oral tablet disintegrating

Get emergency medical help if you have any of these signs of an allergic reaction while taking desloratadine (the active ingredient contained in Clarinex) hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have any of these serious side effects:

• fast, pounding, or uneven heartbeat;

• fever, flu symptoms;

• seizure (convulsions); or

• jaundice (yellowing of the skin or eyes).

Less serious side effects of desloratadine may include:

• dry mouth, sore throat, cough;

• muscle pain;

• drowsiness, tired feeling;

• nausea, diarrhea; or

• headache.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

For Healthcare Professionals

Applies to desloratadine: oral solution, oral tablet, oral tablet disintegrating

Cardiovascular

Cardiovascular side effects of spontaneous nature reported during the marketing of desloratadine (the active ingredient contained in Clarinex) have included tachycardia and palpitations.

Hypersensitivity

Hypersensitivity side effects of spontaneous nature reported during the marketing of desloratadine (the active ingredient contained in Clarinex) have included rash, pruritus, urticaria, edema, dyspnea, and anaphylaxis.

Hepatic

Hepatic side effects have included elevated liver enzymes and bilirubin. Very rarely, hepatitis has been observed in clinical practice.

Gastrointestinal

Gastrointestinal side effects have included dry mouth, dry throat, nausea, and pharyngitis.

Nervous system

Nervous system side effects have included somnolence and dizziness. Psychomotor hyperactivity and seizures have been observed in clinical practice.

An increase in the incidence of somnolence has been reported in clinical trials (n=1838) at doses of 10 mg/day and 20 mg/day (5.2% and 7.6%, respectively), compared to placebo (2.3%).

General

General side effects have included myalgia and influenza-like symptoms.

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