| abstract |
(57) [Problem] To provide a brain function improving agent comprising ondisaponin A, B, E, F, G or a mixture thereof. SOLUTION: This is a brain function improving agent containing ondisaponin A, B, E, F, G or a mixture thereof as an active ingredient, and is administered in the form of an oral administration or parenteral administration. Ondisaponin A, B, E, F, G or a mixture thereof has acetylcholine transferase expression in brain and NGF production promoting action, and is useful as a brain function improving agent. |