Characterization and Compatibility Studies of Different Rate Retardant Polymer Loaded Microspheres by Solvent Evaporation Technique: In Vitro-In Vivo Study of Vildagliptin as a Model Drug

Figure 8

FTIR spectrum of (a) pure drug Vildagliptin, (b) Eudragit RL, and (c) formulation VF13, respectively.

(a)

(b)

(c)