Loratadine, sold under the brand name Claritin among others, is a medication used to treat allergies. [4] This includes allergic rhinitis (hay fever) and hives. [4] Detailed dosage guidelines and administration information for Claritin (loratadine). Includes dose adjustments, warnings and precautions. Loratadine is used to treat allergy symptoms, including runny or stuffy nose, sneezing, watery eyes, and itching of the eyes, nose or throat. This medicine is available as an over-the-counter (OTC) product. This product is available in the following dosage forms: Claritin® Tablets are a non-drowsy, physician recommended OTC allergy medicine that provides powerful relief from allergy symptoms for 24 hours. The Claritin® family of products provides proven allergy relief from symptoms such as runny, itchy nose, sneezing, itchy, watery eyes and itchy throat that lasts all day- without causing drowsiness. Claritin is an antihistamine used to treat the symptoms of allergies, such as sneezing, watery eyes, and runny nose. Learn about side effects, interactions and indications. Claritin (loratadine) is an antihistamine used to treat allergy symptoms. Claritin blocks the action of histamine, a substance in the body that initiates allergic symptoms like itching, sneezing, runny nose, and allergic skin rashes. Discover how Claritin can help manage your allergy symptoms with fewer side effects like drowsiness. This article explores its uses, effectiveness, and how it compares to other antihistamines. Learn about loratadine (Claritin) usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Overview: Loratadine is an antihistamine that is taken to help treat allergy symptoms, such as a runny nose, itchy or watery eyes, sneezing, or an itchy nose or throat. Common side effects may.