neurochemical
[ noo r-oh-kem-i-kuh l, nyoo r- ]
/ ˌnʊər oʊˈkɛm ɪ kəl, ˌnyʊər- /
adjective
of or relating to neurochemistry.
(of a drug or other substance) affecting the nervous system.
noun
a drug or other substance that affects the nervous system.