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What is the purpose of a transdermal patch in medication administration?

  1. To thin mucus for easy removal

  2. To decrease swelling and inflammation

  3. To relieve pain

  4. To deliver a specific dosage of a drug through the skin

The correct answer is: To deliver a specific dosage of a drug through the skin

Transdermal patches are specifically designed to deliver a specific dosage of medication through the skin. This allows for consistent and controlled release of the medication over a period of time. Options A, B, and C do not relate to the purpose of a transdermal patch and are incorrect. Thin mucus, decrease swelling, and relieve pain are not achieved through the use of a transdermal patch.