Which of the following medications is used for the treatment of allergies?

Claritin is the correct choice because it is an antihistamine specifically designed to relieve allergy symptoms such as sneezing, runny nose, and itchy or watery eyes. Antihistamines work by blocking the action of histamine, a substance in the body that causes allergic symptoms, making Claritin effective for treating conditions like hay fever and other allergies.

Ciprofloxacin, although a useful antibiotic, is not indicated for allergies but rather for treating bacterial infections. Clarithromycin is also an antibiotic and is typically used to treat respiratory tract infections and other bacterial conditions, not allergies. Pantoprazole is a proton pump inhibitor used in the treatment of gastrointestinal conditions such as gastroesophageal reflux disease (GERD) and is not related to allergy treatment. Therefore, Claritin stands out as the appropriate medication for managing allergy symptoms.