Clarinex Side Effects
Generic Name: desloratadine
Note: This page contains information about the side effects of desloratadine. Some of the dosage forms included on this document may not apply to the brand name Clarinex.
Not all side effects for Clarinex may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.
For the Consumer
Applies to desloratadine: oral syrup, oral tablet, oral tablet disintegrating
Along with its needed effects, desloratadine (the active ingredient contained in Clarinex) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur while taking desloratadine:Rare
- Anaphylaxis, such as, cough, difficulty swallowing, dizziness, fast heartbeat, hives, itching, puffiness or swelling of eyelids or around the eyes or face or lips or tongue, shortness of breath, skin rash, tightness in chest, unusual tiredness or weakness, wheezing
- dyspnea, such as, shortness of breath, difficult or labored breathing, tightness in chest, wheezing
- edema, such as, swelling
- pruritus, such as, itching skin
- tachycardia, such as, fast, pounding, or irregular heartbeat or pulse
- urticaria, such as, hives or welts, itching, redness of skin, skin rash.
Some side effects of desloratadine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:More common
- dry mouth
- dysmenorrhea, such as, difficult or painful menstruation
- dyspepsia, such as, acid or sour stomach, belching, heartburn, indigestion, stomach discomfort , upset or pain,
- fatigue, such as, unusual tiredness or weakness
- myalgia, such as, joint pain, swollen joints, muscle aching or cramping, muscle pains or stiffness, difficulty in moving
- pharyngitis, such as, body aches or pain, congestion, cough, dryness or soreness of throat, fever, hoarseness, runny nose, tender swollen glands in neck, trouble in swallowing, voice changes.
- somnolence, such as, sleepiness or unusual drowsiness
For Healthcare Professionals
Applies to desloratadine: oral solution, oral tablet, oral tablet disintegrating
Cardiovascular side effects of spontaneous nature reported during the marketing of desloratadine (the active ingredient contained in Clarinex) have included tachycardia and palpitations.
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 side effects have included elevated liver enzymes and bilirubin. Very rarely, hepatitis has been observed in clinical practice.
Gastrointestinal side effects have included dry mouth, dry throat, nausea, and pharyngitis.
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 side effects have included myalgia and influenza-like symptoms.
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