医药 is a compound noun meaning 'medicine' or 'medical drugs' in a broad, general sense. It combines two characters: 医 (yī), meaning 'medical' or 'to heal', and 药 (yào), meaning 'drug' or 'medicine'. Together, they refer collectively to pharmaceuticals, treatments, and medicinal substances used in healthcare—not just pills, but also herbal remedies, injections, and other therapeutic agents.

This term is formal and commonly used in official, academic, or institutional contexts—such as '医药公司' (pharmaceutical company), '医药行业' (pharmaceutical industry), or '医药费' (medical expenses). It’s not typically used in casual speech to refer to a single pill or remedy; for that, people usually say 药 (yào) alone. 医药 emphasizes the systematic, professional domain of medicine rather than individual items or home remedies.