immunosuppressant vs immunosuppressive

immunosuppressant and immunosuppressive both are nouns.

Word	Noun	Adjective	Verb	Adverb
immunosuppressant	Yes	No	No	No
immunosuppressive	Yes	Yes	No	No

As nouns, immunosuppressant and immunosuppressive are synonyms defined as:

immunosuppressant and immunosuppressive: a drug that lowers the body's normal immune response

Other synonyms of immunosuppressant include immune suppressant drug, immunosuppressive drug, immunosuppressor.

immunosuppressant (noun)	immunosuppressive (noun)
a drug that lowers the body's normal immune response	a drug that lowers the body's normal immune response

immunosuppressant (adjective)	immunosuppressive (adjective)
	of or relating to a substance that lowers the body's normal immune response and induces immunosuppression