The attached video explains Cholinergic drugs which are medications that inhibit, enhance, or mimic the action of the neurotransmitter acetylcholine. Following the video you can learn everything about the topic. Timeline: 0:10:cholinergic neuron 1:47:cholinergic receptors 4:20:types of agonists 4:38:direct acting cholinergic agonsists 6:42:indirect acting cholinergic agonsists 9:51:cholinergic adverse effects