Asenapine hydrochloride is primarily used in the treatment of psychiatric conditions, particularly schizophrenia and bipolar disorder. It functions as an antipsychotic agent, helping to manage symptoms such as hallucinations, delusions, and mood swings. The medication is administered sublingually, allowing for rapid absorption and effective action. It is often prescribed when other treatments have not been effective or are not suitable for the patient. Regular use can help stabilize mood and improve overall mental health, making it a critical component in the management of these chronic conditions. Patients are typically monitored for side effects and efficacy to ensure optimal therapeutic outcomes.