The study results show that the alcaloid-rich extraction proved to be the superior AChE inhibiting agent; its activity was nearly 4-fold higher than that of the most active Huperzia serrata extraction with the IC50 value of 12.61 (9.83 - 16.16) µg / ml, whereas the fractions as well as the total extract did not provide any BuChE inhibition activity and alcaloid-rich extract showed weak ability (IC50 at 76.67 (64.78 - 91.84) µg / ml).