What are the common side effects of Clarintin-D?

Some common side effects of Claritin-D are dizziness, restlessness, nervousness, anxiety and headache, according to MedicineNet. More serious side effects include hives, difficulty breathing, swelling, rash and wheezing, notes MedlinPlus. Claritin-D is a brand-name medication that includes loratadine and pseudoephedrine.

Patients who experience serious side effects of Claritin-D, such as difficulty swallowing, should stop using the medication and immediately contact their physician for advice, warns MedicineNet. Claritin-D is an over-the-counter medication used to treat symptoms of allergies and the common cold. Symptoms Claritin-D treats include itchy eyes, runny nose and sneezing, notes MedlinePlus. Claritin-D works by blocking the action of an allergic reaction trigger called histamine.