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. 2021 Sep 10;13(9):1443. doi: 10.3390/pharmaceutics13091443

Figure 1.

Figure 1

Robust design space of formulation development for metformin HCl layer with an optimal setting. Since the design space explorer function of the mixture design does not appear as a triangular area, the design space function of MODDE was used, and the optimal setting was displayed on the basis of the analysis result.