Abstract A number of analogues of GABA or β-alanine containing 4, 4-diphenyl-3-butenyl (DPB), benzhydryl ethyl ether (BEE), or benzhydryl propyl ether N-substituents have been synthesized and tested as inhibitors of synaptosomal GABA uptake. Whereas the N-DPB and N-BEE analogues of GABA are markedly less potent than GABA itself as inhibitors of GABA uptake, N-methylation of these analogues resulted in increased potency and ...