parenteral

As adjectives the difference between parenteral and parental

is that parenteral is administered by some means other than oral or rectal intake, particularly intravenously or by injection while parental is of or relating to a parent.

As a noun parental is

a person fulfilling a parental role.

As an adjective parenteral is

parenteral.

As adjectives the difference between injectable and parenteral

is that injectable is capable of being (or designed to be) injected while parenteral is administered by some means other than oral or rectal intake, particularly intravenously or by injection.

As a noun injectable

is a drug which is designed to be injected.

As an adjective parenteral

is administered by some means other than oral or rectal intake, particularly intravenously or by injection.

As an adverb parenterally is

in a parenteral manner.

As an adjective parenteral

is parenteral.

As a noun ceftizoxime is

a parenteral third-generation cephalosporin drug.