Used primarily as an antihistamine to relieve allergy symptoms such as sneezing, runny nose, and itching. It is also effective in treating allergic skin reactions like hives and eczema. Due to its antiserotonergic properties, it is prescribed to manage serotonin syndrome in certain cases. Commonly used off-label to stimulate appetite and promote weight gain, especially in underweight patients or those with eating difficulties. Has been utilized in the prevention of migraine headaches in both adults and children. Possesses mild anticholinergic and sedative effects, which can help with insomnia or as a calming agent in specific clinical situations.