Asapiprant is primarily used in the field of medicine, particularly in the treatment of allergic conditions. It functions as a selective antagonist of the prostaglandin D2 receptor, which plays a significant role in allergic reactions and inflammation. By blocking this receptor, it helps alleviate symptoms associated with allergic diseases such as asthma and allergic rhinitis. Its application is also being explored in other inflammatory conditions, offering potential therapeutic benefits in managing chronic inflammatory disorders.