efficaciously vs efficacious

efficaciously is not an adjective while efficacious is an adjective.

Word	Noun	Adjective	Verb	Adverb
efficaciously	No	No	No	Yes
efficacious	No	Yes	No	No

efficaciously (adjective)	efficacious (adjective)
	marked by qualities giving the power to produce an intended effect
	producing or capable of producing an intended result or having a striking effect

efficaciously (adverb)	efficacious (adverb)
in an effective manner