Free online courseIntroduction to Pharmacology

Course Description

Understanding how medicines affect the body and how the body handles medicines is a core skill for anyone studying or working in healthcare. This free online course in pharmacology is designed to help you build a strong, practical foundation for safer decisions and clearer clinical reasoning, whether you are preparing for exams, supporting patients, or refreshing key concepts for professional growth.

You will explore the two pillars that shape most drug-related questions in real life: pharmacokinetics and pharmacodynamics. That means learning to think through how a drug is absorbed, distributed, metabolized, and eliminated, and how these processes influence onset, duration, and intensity of effect. In parallel, you will strengthen your grasp of how drugs produce their effects at receptors and tissues, why potency and efficacy are different ideas, and how characteristics such as lipid solubility can change behavior in the body.

The course connects these principles to major body systems frequently encountered in practice and study, including autonomic, neurological, cardiac, respiratory, and gastrointestinal contexts. Instead of memorizing isolated facts, you will develop a structured way to reason about medication effects, predict common outcomes, and spot patterns that recur across drug classes.

To reinforce learning, the experience includes knowledge-check questions focused on key definitions and mechanisms, such as distinguishing what the body does to a drug versus what a drug does to the body, and identifying processes like conversion of active compounds into inactive forms. By the end, you should feel more confident interpreting pharmacology terminology, approaching test-style questions, and applying foundational concepts to everyday healthcare scenarios.