The drug which blocks both H1 and 5ht2 receptor is
Phenoxybenzamine
Cyproheptadine
Ritanserin
Ondonsetron
Cyproheptadine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, sneezing, hives, and itching. It works by blocking a ceain natural substance (histamine) that your body makes during an allergic reaction. Refer kDT 7/e p170
General anatomy