Statistical optimization of a sustained-release matrix tablet of lobenzarit disodium.

The statistical optimization of sustained-release matrix tablets of lobenzarit disodium salt (LDS) was performed using the central composite experiment design 2(3) for three independent variables: the amount of polymer (Eudragit RS-PO) AP, the total volume of granulation solvent VS, and the amount of filler (microcrystalline cellulose) CE. The t90% was selected as the response variable. The response surfaces were performed from a statistical mathematical model. The optimal formulation was obtained for the variables (AP = 15 mg, VS = 60 microliters, and CE = 0).