Microneedle Technology for Transdermal Drug Delivery: A Comprehensive Review

Microneedle technology is an innovative approach to transdermal drug delivery that addresses several limitations of traditional drug administration methods. By enabling minimally invasive, painless drug delivery through the skin, microneedles enhance patient compliance while maintaining drug efficacy and bioavailability. This review explores the underlying principles, various types, and fabrication techniques of microneedles, alongside their advantages and limitations. Current challenges, including material selection, scalability, and regulatory hurdles, are discussed. Applications across vaccines, systemic drug delivery, and cosmetic therapies highlight the transformative potential of microneedle technology in revolutionizing therapeutic strategies. Future advancements could further improve precision and broaden its clinical adoption.