Abstract
A topical o/w cream containing tretinoin microspheres was prepared. Gelatin microspheres of tretinoin were prepared using coacervation method. These microspheres contained about 50% w/w tretinoin. The particle size range of microspheres was between 90-150 µm. In vitro drug release from microspheres and a cream formulation was studied. It was shown that drug release from microspheres followed Higuchi kinetics of release. However, drug release from the cream formulation followed zero order release profile.
Keywords
Topical cream Zero order release Coacervation Gelatin Microspheres Microencapsulation Tretinoin All-trans-retinoic acid
Copyright
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