Claritin-D 12 Hour Side Effects

Please note - some side effects for Claritin-D 12 Hour may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Side Effects of Claritin-D 12 Hour - for the Consumer

Claritin-D 12 Hour 12-Hour Sustained-Release Tablets

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Claritin-D 12 Hour 12-Hour Sustained-Release Tablets:

Coughing; dizziness; drowsiness; dry mouth; excitability; fatigue; headache; loss of appetite; mild stomach upset; nausea; nervousness; sleeplessness; sore throat; thirst.

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; difficulty urinating; fast or irregular heartbeat; mental or mood changes; seizures; severe dizziness; uncontrolled shaking or tremor.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

Side Effects by Body System - for Healthcare Professionals

Nervous system

Nervous system side effects of loratadine have included headaches in approximately 7% of treated patients. Loratadine has not been shown to cause significant drowsiness, sedation, or impair psychomotor skills.

Nervous system side effects of pseudoephedrine have included nervous system stimulation, resulting in tremor, anxiety, and nervousness. Insomnia has been reported in up to 30% of pseudoephedrine-treated patients. Headache, somnolence, and dizziness have also occurred in patients receiving pseudoephedrine.

Cardiovascular

Cardiovascular side effects of loratadine have included at least one report of syncopal episodes, premature ventricular complexes, and a prolonged QT interval.

Pseudoephedrine causes vasoconstriction which generally does not produce hypertension, but may be problematic for patients with preexisting hypertension. Arrhythmias may be produced in predisposed patients. Rarely, pseudoephedrine has been reported to cause coronary artery spasm and chest pain.

Adverse effects which have been reported during therapy with loratadine and pseudoephedrine included dizziness, syncopal episodes, palpitations, ventricular arrhythmias including torsades de pointes, cardiac arrest, and cardiac death.

Gastrointestinal

Gastrointestinal side effects have included anorexia and gastric irritation in approximately 5% of patients treated with pseudoephedrine. Dry mouth, nose, or throat have occurred in up to 15% of patients. Gastrointestinal effects of loratadine have been rare and included nausea and dry mouth. A few cases of mechanical upper gastrointestinal tract obstruction have been reported with Claritin-D 24 Hour tablets (brand of loratadine-pseudoephedrine), primarily in patients who have difficulty swallowing tablets or in whom there is upper gastrointestinal tract narrowing or abnormal esophageal peristalsis. Ischemic colitis has been reported.

Hypersensitivity

Hypersensitivity side effects of pseudoephedrine have included reports of fixed drug eruptions.

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