Transdermal systems are medical devices designed to deliver medication through the skin. They typically come in the form of patches that adhere to the skin's surface, allowing for a controlled release of drugs into the bloodstream over time. This method can improve patient compliance and provide a steady dosage, reducing the need for frequent oral medications. These systems are often used for pain management, hormone replacement, and smoking cessation. Common examples include nicotine patches for quitting smoking and hormonal patches for contraceptive purposes. Transdermal systems offer a non-invasive alternative to traditional drug delivery methods.