Antihistaminic

An antihistaminic is a type of medication used to treat allergies. It works by blocking the action of histamine, a chemical released by the body when it is exposed to an allergen. This helps to reduce or prevent the symptoms of an allergic reaction. Common symptoms of allergies include sneezing, itching, runny nose, and watery eyes. Antihistaminics can also be used to treat other conditions, such as hives, itching, and motion sickness. There are several different types of antihistaminics available, including first-generation, second-generation, and third-generation antihistaminics. Different types of medications can be used to treat different symptoms. For example, second-generation antihistaminics are more effective at treating itching and hives than first-generation antihistaminics.