What delivery mechanism do oral medications use?

Oral medications primarily operate through a systemic delivery mechanism. When a medication is taken by mouth, it is absorbed in the gastrointestinal tract, typically through the lining of the stomach or intestines, and then enters the bloodstream. Once in the bloodstream, the drug is distributed throughout the body, allowing it to exert its effects on various organs and systems.

The systemic route is crucial for medications that need to have a wide-reaching effect, such as pain relievers, antibiotics, or medications for chronic conditions. By contrast, local delivery mechanisms target a specific site (such as topical medications for skin conditions), while inhalation methods are used for direct delivery to the respiratory system. Oral medications are distinct in that their absorption and effect are realized throughout the entire body, making the systemic mechanism essential for understanding their pharmacokinetics and therapeutic action.