Fig. 2From: Optimized chronomodulated dual release bilayer tablets of fexofenadine and montelukast: quality by design, development, and in vitro evaluationFTIR spectrum of a fexofenadine HCl and sodium starch glycolate, b montelukast sodium and HPMC E 5 LV, c fexofenadine HCl and Eudragit S100, and d montelukast sodium and Eudragit S100Back to article page