Which term refers to medication that is absorbed through the skin or mucous membranes?

Transdermal refers to a method of drug delivery where medication is absorbed directly through the skin or mucous membranes into the bloodstream. This method is particularly useful for providing a continuous and controlled release of medication over an extended period, minimizing fluctuations in drug levels and enhancing patient compliance. Transdermal patches and gels are common forms of this delivery system, allowing for medications such as hormones, pain relievers, or smoking cessation agents to be delivered effectively without the need for injections or oral administration.

In contrast, oral delivery refers to medications taken by mouth, which are then absorbed through the gastrointestinal tract. Parenteral administration encompasses various methods including injections that deliver drugs directly into the bloodstream or tissues, bypassing the digestive system. Inhalation involves taking medications into the respiratory system, typically for targeting the lungs (e.g., asthma medications), but does not involve absorption through the skin or mucous membranes. Each of these methods has its distinct mechanisms and routes of administration, but transdermal specifically highlights the absorption through skin and mucosal surfaces.