ABSTRACT:
Transdermal drug delivery systems (TDDS) are dosage forms involves drug transport to viable epidermal and or dermal tissues of the skin for local therapeutic effect while a main function of drug is transported into the systemic blood circulation. The purpose of this research was to develop a matrix-type transdermal therapeutic system containing drug diclofenac with different ratios of hydrophilic (hydroxyl propyl cellulose) and hydrophobic (ethyl cellulose) polymeric systems polymeric systems by the solvent evaporation technique and by using Glycerol as plasticizer .Different concentrations of oleic acid and isopropyl myristate were used to enhance the transdermal permeation of Diclofenac. To improve characters of transdermal drug delivery system (TDDS) was emerged, which will improve the therapeutic efficacy and safety of drugs by specific sites within the body, thereby reducing both the size and number of doses. The present article reviews the selection of drug candidates and polymers suitable to be formulated as transdermal system, advantages, disadvantages of formulation design and the methods of evaluation. . In this review article the various aspects of pharmaceutical transdermal drug delivery system where compiled together and the target audience are specifically the M Pharm and B Pharm students so that their knowledge towards the subject concern can be enhanced and also at the same time can be motivated towards the publications.