Fig. 5From: Optimized chronomodulated dual release bilayer tablets of fexofenadine and montelukast: quality by design, development, and in vitro evaluationResponse surface and contour plots illustrating a–d effect of fexofenadine HCl (FXD), sodium starch glycolate (SSG), and sodium bicarbonate (SB) on disintegration time (DT); e–h effect on drug release (DR); and i–l effect of montelukast sodium (MTK), hydroxypropyl methylcellulose (HPMC), and magnesium stearate (MS) on drug release (DR)Back to article page