Acetylcholinesterase inhibitors, of course! These include
ambinonium (Mytelase), physostigmine, neostigmine (Prostigmin,
Vagostigmin), galantamine (Razadyne, Reminyl, Nivalin),
pyridostigmine, Tacrin (Cognex), donepezil (Aricept), edrophonium
(Tensilon, Enlon, Reversol) and rivastigmine (Exelon), and
others.