Table 1: Composition for core tablets with various molar ratios of vinpocetine and citric acid (unit : mg).

Vin : citric acid1 : 01 : 1/31 : 2/31 : 11 : 4/31 : 6/31 : 7/3

Vinpocetine15.015.015.015.015.015.015.0
Citric acid02.745.488.2210.9616.4419.2
Lactose70.1769.2568.3467.4366.5164.6963.77
Mannitol140.33138.5136.68134.85133.02129.37127.53
HPMCK4M7.57.57.57.57.57.57.5
PVPK29–3215.015.015.015.015.015.015.0
M.S.2.02.02.02.02.02.02.0