ACHE and amnesia: Pretreatment with quercetin significantly potentiated the efficacy of donepezil, evidenced through the improved cognitive memory in scopolamine-induced amnesia rats, which could have been due to the reduced levels of AChE and Aβ1–42 as well as elevated glutathione level, decreased lipid peroxidation, and reversal of neuronal damage in the treated groups [110].