Source:http://linkedlifedata.com/resource/umls/id/C0202474
MSH: An alkaloid found in the seeds of STRYCHNOS NUX-VOMICA. It is a competitive antagonist at glycine receptors and thus a convulsant. It has been used as an analeptic, in the treatment of nonketotic hyperglycinemia and sleep apnea, and as a rat poison.,CSP: extremely poisonous alkaloid which causes excitation of the central nervous system by blocking postsynaptic inhibition of neural impulses.