The document discusses several key concepts related to how drugs work in the body including: - Intended effects are the reasons for using a drug while unintended effects are side effects. Common side effects include nausea, changes in alertness, and dependence. - A drug's effects depend on factors like dose, tolerance, potency, route of administration, rate of absorption, distribution and metabolism. Higher doses can produce therapeutic or toxic effects. - Drug interactions can be additive, antagonistic, or synergistic. Pharmacokinetic factors like metabolism and elimination influence drug effects.

1. How and Why Drugs Work Chapter 5

4. Common Side Effects of Drugs (continued)

7. Dose-Response Curve

9. Potency vs. Toxicity Toxicity the capacity of a drug to do damage or cause adverse effects in the body Potency the amount of drug necessary to cause an effect

19. Adaptive Processes (continued)

21. Drug Dependence Physical dependence Psychological dependence