medicate vs medicine

medicate is not a noun while medicine is a noun.

Word	Noun	Adjective	Verb	Adverb
medicate	No	No	Yes	No
medicine	Yes	No	Yes	No

As verbs, medicate and medicine are synonyms defined as:

medicate (noun)	medicine (noun)
	the learned profession that is mastered by graduate training in a medical school and that is devoted to preventing or alleviating or curing diseases and injuries
	punishment for one's actions
	(medicine) something that treats or prevents or alleviates the symptoms of disease
	the branches of medical science that deal with nonsurgical techniques

medicate (verb)	medicine (verb)
treat medicinally, treat with medicine	treat medicinally, treat with medicine
impregnate with a medicinal substance