FREEZE-DRIED POLYMERIC NASAL INSERTS FOR ANTIHYPERTENSIVE DRUG DELIVERY

摘要

Objective: The aim of this study was to investigate the ability of polymers to form verapamil HCl nasal inserts. Methods: Theinserts were prepared by lyophilization technique using bioadhesive polymers as chitosan, sodium carboxymethyl cellulose, hydroxyl propyl methyl cellulose,sodium alginate and xanthan gum. The prepared inserts were characterized by different parameters as bioadhesion potential, wetting time, water uptake behavior, drug release and permeation. Results: Verapamil HClnasal inserts prepared with 2% chitosan polymer showed a good bioadhesive, water uptake and release within 6 hrs properties as well as the highest drug contents and permeation within 8 hrs. Conclusion: Nasal inserts could be a good alternative route to avoid the first pass metabolism of verapamil HCl. Keywords : Intranasal delivery, Verapamil HCl, Inserts, Lyophilization.