Acrivastine is primarily used as an antihistamine to alleviate symptoms associated with allergic conditions. It is effective in treating hay fever, allergic rhinitis, and chronic urticaria by blocking the action of histamine, a substance in the body that causes allergic symptoms. The medication helps reduce symptoms such as sneezing, itching, runny nose, and watery eyes. Due to its rapid onset of action, it is particularly useful for providing quick relief from acute allergic reactions. Acrivastine is often preferred for its non-sedating properties, making it suitable for individuals who need to remain alert and focused during the day. It is typically administered orally in capsule form and is available over the counter in many regions.