Salbutamol Delivering Transdermal Dosage Form Based on Osmo-Regulatory Principle

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Abstract
A transdermal drug delivery system of Salbutamol was developed which released the drug following zero order kinetics. The designed system essentially based on trilaminated matrix concept. The delivery of drug from the system affected by osmotic phenomenon where sodium chloride was used as an osmogent. To establish the desired release rate polyethylene glycol 4000 (PEG 4000) was used as channelising agent in rate controlling membrance of cellulose acetate. The designed systems exhibiting zero-order release rate, were studied for the in-vitro skin permeation. The product which was having skin permeability rate 115 mcg/hr/cm2 was selected for the in-vivo evaluation. The forced expiratory volume (FEV1) and drug plasma concentration were monitored periodically. The study revealed that designed osmoregulatory transdermal drug delivery system of Salbutamol could be used successfully with improved therapeutic response and holds promise for the clinical studies.

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