The document discusses 50 substances, presented in the following seven categories: narcotics, depressants, stimulants, hallucinogens, cannabis, alcohol, and steroids. Drug category profiles describe the level of physical and psychological dependence accompanying use of the drug, how the drug is used (oral, smoked, injected, sniffed), and the duration (in hours) of the drug's effect. The profiles include a brief definition of each category, possible effects, symptoms of overdose, withdrawal syndrome, and indications of possible misuse. The document also includes brief profiles for eight commonly abused substances: alcohol, marijuana, inhalants, steroids, crack, cocaine, ice, and hallucinogens. The profiles include "street" names for the drugs, reasons why they are used, and some, but not all, of the actions and side effects of these drugs.