Table 1: Effects of rivastigmine and vitamin D3 on brain Ach levels with ±SEM in all studied groups.


Parameters Groups Acetylcholine (Ach) (umol/mg protein)

Control 5.52 ± 0.23
Alzheimer's group 0.31 ± 0.01 *
Rivastigmine group 5.16 ± 0.22 **
Cholecalciferol group 4.8 ± 0.31 **
Rivastigmine + cholecalciferol group 5.44 ± 0.42 **

*significant difference from control group.
**significant difference from Alzheimer's group.