Source:http://linkedlifedata.com/resource/umls/id/C0242956
MSH: Drugs that bind to nicotinic cholinergic receptors (RECEPTORS, NICOTINIC) and block the actions of acetylcholine or cholinergic agonists. Nicotinic antagonists block synaptic transmission at autonomic ganglia, the skeletal neuromuscular junction, and at central nervous system nicotinic synapses.,NCI: Natural or synthetic compounds inhibiting acetylcholine neurotransmitter action at nicotinic receptors, which are ionotropic receptors that form ligand-gated ion channels in cells' plasma membranes.