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Clarinex Oral Precautions and Side Effects


IMPORTANT NOTE: The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate or effective for you. Consult your healthcare professional before using this drug.

Table of Contents

Generic Name: DESLORATADINE SYRUP - ORAL
Pronounced: (des-lor-AT-uh-deen)

Clarinex Oral Side Effects

Throat discomfort, muscle pain, nausea, indigestion, loss of appetite, diarrhea, dizziness, fatigue, trouble sleeping, nosebleeds, or dry mouth may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Desloratadine does not usually cause drowsiness when used at recommended doses and under normal circumstances. However, be sure that this drug does not make you drowsy before engaging in activities that require alertness such as driving or using machinery.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur:

  • rapid or pounding heartbeat


Tell your doctor immediately if any of these rare but very serious side effects occur:

  • dark urine
  • yellowing eyes or skin


A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include:

  • rash
  • itching/swelling (especially of the face/tongue/throat)
  • severe dizziness
  • trouble breathing


This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Clarinex Oral Precautions

Before taking desloratadine, tell your doctor or pharmacist if you are allergic to it; or to loratadine; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of:

  • kidney disease
  • liver disease


Limit alcohol intake as it may intensify drug side effects.

This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.

This drug passes into breast milk. Consult your doctor before breast-feeding.

Clarinex Oral Medical Alert

Your condition can cause complications in a medical emergency. For enrollment information call MedicAlert at 1-800-854-1166 (USA) or 1-800-668-1507 (Canada).


CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.
Copyright 2007 First DataBank, Inc.

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