Újhelyi, ZoltánGhaedi, Zahra2021-04-262021-04-262021-04-23http://hdl.handle.net/2437/307402The nasal drug delivery system are incredibly versatile and although the number of potential pharmacons to be employed are quite limited . Nasal drug delivery are incredibly easy to use and also do not intimidate the patient which has a beneficial effect on overall patient compliance33ennasal dosagenasal cavitybioavailability