Why do pharmacy students study chemistry, biology, and physiology?

Pharmacy students study chemistry, biology, and physiology because the treatment of illness with drugs encompasses a broad field of knowledge in the physical and biological sciences. A comprehensive understanding of these disciplines is essential for adequate pharmaceutical training and practice.1

• Chemistry: Since most medicinal compounds are organic chemicals, pharmacists must understand chemistry to grasp the relationship between a compound's chemical structure and its effects on the body. This knowledge is fundamental to the synthesis, standardization, and purification of drugs.21
• Biology and Physiology: These sciences are critical for understanding the mechanisms of drug action within living systems. Pharmacists must comprehend how drugs interact with the body's processes, including absorption, distribution, metabolism, and excretion—a field known as pharmacokinetics.23

By mastering these subjects, pharmacists are equipped to formulate correct dosage forms, ensure the efficacy and quality of medicinal products, and provide informed advice to patients and prescribers. This scientific foundation is vital for maintaining safety, as pharmacists must account for individual patient variations, such as age, genetics, and existing health conditions, which influence how the body responds to medication.13