Patch

Patch (medicine)

A patch in the field of medicine refers to a method of delivering medication or other therapeutic agents through the skin. This method is also known as transdermal delivery. The patch is typically adhered to the skin and the medication is absorbed through the skin over a period of time.

Types of Patches

There are several types of patches used in medicine, including:

• Nicotine patch: This type of patch is used to help people quit smoking. It delivers a steady dose of nicotine through the skin to help reduce cravings for cigarettes.

• Fentanyl patch: This patch is used to deliver a powerful opioid painkiller for people with chronic pain conditions.

• Estrogen patch: This patch is used to deliver estrogen to women who are undergoing menopause or who have had their ovaries removed.

• Contraceptive patch: This patch delivers hormones that prevent pregnancy.

Advantages and Disadvantages

The use of patches in medicine has both advantages and disadvantages.

Advantages

• Patches provide a steady, controlled release of medication.
• They can be used when oral medication is not feasible or desirable.
• They are easy to use and non-invasive.

Disadvantages

• Some people may have skin reactions to the adhesive used in the patch.
• The medication may not be absorbed as well in some people, particularly those with certain skin conditions.
• Patches must be applied correctly to be effective.

See Also

• Drug delivery
• Pharmacokinetics
• Pharmacodynamics

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