PURPOSE: To provide an neutropic drug having high activity and low toxicity as compared with known drugs. CONSTITUTION: The medicament useful for improving the recognition functions (attention, learning and memory) lost by an attack, cerebral damage, nerve degeneration stage (Alzheimer disease, AIDS) and senile dementia is prepd. by using 2,6-dimethyl-3,5-bis[(2'-propoxy)ethoxycarbonyl]-4-(2'- fluorophenoxyphenyl)-1,4-dihydropyridine. The compd. has high resistance enzyme activity and high activity to the formulation of passive avoidance response and has a distinct antiamnesia action.
NEUTROPIC DRUG