Name four common routes for and description of drug administration methods?

Four common routes for drug administration include:

1. Oral: Medications are taken by mouth and absorbed through the gastrointestinal tract, convenient for self-administration.
2. Intravenous (IV): Drugs are delivered directly into the bloodstream via a vein, allowing for rapid onset of action and precise control of drug levels.
3. Intramuscular (IM): Medications are injected into a muscle, providing a slower absorption rate compared to IV, suitable for depot formulations.
4. Topical: Drugs are applied directly to the skin or mucous membranes for localized effect, minimizing systemic absorption and side effects.