What is the primary function of a transdermal patch?

The primary function of a transdermal patch is to provide a controlled release of medication through skin absorption. These patches are designed to deliver medication directly into the bloodstream via the skin, allowing for a steady and consistent release of the active ingredient over an extended period. This method is particularly advantageous for medications that need to maintain stable blood levels, minimizing peaks and troughs in drug concentration that can occur with other forms of administration, such as oral intake.

Transdermal patches are commonly used for various therapeutic applications, including pain management, hormone replacement therapy, and smoking cessation, making them an effective and convenient alternative to more invasive routes. By bypassing the gastrointestinal tract and the first-pass effect of the liver, the transdermal route can improve the bioavailability of certain medications, providing better therapeutic outcomes for patients.