Transdermal patch
Transdermal Patch
A Transdermal patch (pronounced: trans-der-mal patch) is a medicated adhesive patch that is placed on the skin to deliver a specific dose of medication through the skin and into the bloodstream.
Etymology
The term "transdermal" is derived from the Latin words "trans" meaning across, and "derma" meaning skin. The term "patch" is derived from the Old French "pache", meaning a piece or a patch.
Usage
Transdermal patches are commonly used in the treatment of various conditions such as chronic pain, nicotine addiction, hormone replacement therapy, and motion sickness. They provide 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.
Advantages
The main 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 a simple skin patch. This allows the patient to go about their daily routine without the need for multiple doses throughout the day.
Related Terms
- Topical medication
- Intravenous therapy
- Intramuscular injection
- Oral administration
- Controlled release
- Drug delivery
External links
- Medical encyclopedia article on Transdermal patch
- Wikipedia's article - Transdermal patch
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