QUALITY BY DESIGN APPROACH FOR THE DEVELOPMENT AND OPTIMIZATION OF CETIRIZINE HYDROCHLORIDE EMULGEL: FORMULATION, CHARACTERIZATION, AND IN VITRO EVALUATION
Emulgels combine the formulation attributes of emulsions and gels and are increasingly investigated as topical drug delivery systems because their rheological and release properties can be tuned through excipient selection. Cetirizine hydrochloride is a second-generation H1-antihistamine that is often used orally. Usin...