Ritanserin is primarily used in research settings to study its effects on serotonin receptors, particularly the 5-HT2A and 5-HT2C subtypes. It has been investigated for its potential therapeutic applications in conditions such as anxiety, depression, and sleep disorders, due to its ability to modulate serotonin activity. Additionally, Ritanserin has been explored for its role in managing symptoms of schizophrenia, particularly in addressing negative symptoms and cognitive impairments. Its influence on serotonin receptors also makes it a valuable tool in understanding the pathophysiology of various psychiatric and neurological disorders.