All are cholinergic agents except I
Galantamine
Donepezil
Tacrine
Memantine
Refer kDT 6/e p 472,473 Donepazil, rivastigmine, gallantamine and tacrine are cholinergic drugs( due to inhibition of cholenesterase enzyme)useful for Alzheimer's disease Memantine is an NMDA blocker, used for Alzheimer's disease
Autonomic nervous system