Chemistry aids doctors in understanding the chemical composition, structure, and properties of medicines, allowing them to determine how a drug interacts with the body. Through studying chemical reactions, solubility, stability, and metabolism, doctors can predict a drug’s effectiveness, potential side effects, and appropriate dosage. Knowledge of chemical bonding and molecular structure helps in designing drugs that target specific receptors or enzymes, optimizing therapeutic outcomes while minimizing harmful effects. This understanding ensures that medications are safe, effective, and tailored to individual patient needs.