Neoclarityn is an antihistamine medication that helps relieve symptoms of allergies such as hay fever and allergic rhinitis. The active ingredient in Neoclarityn is desloratadine, which works by blocking the action of histamine in your body, reducing symptoms like sneezing, itching, and runny nose. Neoclarityn is suitable for adults and children over 12 years old who need relief from allergy symptoms.