This document discusses self-medication and its risks and advantages. It notes that self-medication involves using drugs or medicines without advice from a healthcare specialist. Some advantages of self-medication include time-saving, convenience, and usefulness for mild illnesses. However, risks include adverse drug reactions, wrong dosage, wrong medication, disease aggravation, drug interactions, and drug incompatibility. The document also discusses pharmacology basics, routes of drug administration, and several herbal medicines approved by the Department of Health in the Philippines.