<prompt> Oral and topical drug for nasal decongestion is -PhenylephrineHistamineMethoxamineDopamine  <response>: Ans. is a i.e., Phenylephrine Phenytephrineo It is selective alpha 1 agonist.o Topically it is used as nasal decongestant and in eye for producing mydriasis when cycloplegia is not required,o It is also a part of oral nasal decongestant preparations. 