Which of the following is a common form of drug administration?

Oral administration is considered one of the most common forms of drug administration due to its convenience, ease of use, and widespread acceptance among patients. Many medications are formulated in pill, tablet, or liquid forms that can be easily swallowed, making this route particularly practical for both short-term and long-term therapy. This method allows for self-administration, which can enhance patient compliance with treatment regimens.

While topical application, transdermal patches, and inhalation aerosols are also valid and effective routes for delivering medication, they are often used in specific clinical scenarios or for particular types of medications. For example, topical application is useful for localized treatment, transdermal patches provide a steady release of medication through the skin, and inhalation is primarily utilized for respiratory conditions. In contrast, the oral route is versatile and suitable for a vast array of drug classes, making it the most commonly utilized method.