European Journal of Biomedical and Pharmaceutical Sciences

TRANSDERMAL DRUG DELIVERY SYSTEM: A REVIEW

Gauri M. Paratkar* and Sameer Shafi

ABSTRACT

Transdermal patches are designed to deliver a therapeutically effective amount of drug across the skin membrane. In order to deliver therapeutic agents through the skin for systemic effects, the great physicochemical, morphological and biological properties of the skin are taken into consideration. An advantage of a transdermal drug delivery route over other types of medication delivery such as oral, topical, intravenous, intramuscular, etc. is that the patch provides a controlled release of the medication into the patient, usually through either a porous membrane covering a reservoir of medication or through body heat melting thin layers of medication embedded in the adhesive. Transdermal drug delivery offers controlled release of the drug into the patient, it enables a steady blood level profile, resulting in reduced systemic side effects and, sometimes, improved efficacy over other dosage forms. The main objective of transdermal drug delivery system is to deliver drugs into systemic circulation through skin at predetermined rate with minimal inter and intra patient variations.

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