Dermal patch

Dermal Patch

A Dermal Patch (pronunciation: /ˈdɜːr.məl pætʃ/) 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 "Dermal Patch" is derived from the Latin word derma meaning skin, and the English word patch, referring to a small piece of material affixed to another, larger piece to conceal, reinforce, or repair a worn area, hole, or tear.

Usage

Dermal patches are commonly used in the treatment of various conditions such as chronic pain, nicotine addiction (Nicotine patch), hormone replacement therapy, and prevention of motion sickness (Scopolamine patch).

Advantages

The main advantage of a dermal patch over other forms of drug delivery is that the patch provides 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.

Related Terms

• Transdermal patch
• Topical medication
• Drug delivery
• Pharmacokinetics
• Pharmacodynamics

External links

• Medical encyclopedia article on Dermal patch
• Wikipedia's article - Dermal patch

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