Oral donepezil reduces hypersensitivity after nerve injury by a spinal muscarinic receptor mechanism.
Clayton BA, Hayashida K, Childers SR, Xiao R, Eisenach JC. Oral donepezil reduces hypersensitivity after nerve injury by a spinal muscarinic receptor mechanism. Anesthesiology. 2007 May; 106(5):1019-25.