| A | B |
|---|
| medicines | drugs that are used to treat or prevent diseases or other conditions |
| drugs | substances other than food that change the structure or function of the body or mind |
| vaccine | a preparation of dead or weakened pathogens, which are introduced in the body to stimulate an immune response |
| analgesics | pain relievers |
| side effects | reactions to medicine other than the one intended |
| additive interaction | medicines working together in a positive way |
| synergistic effect | interaction of two or more medicines that results in a greater effect than when the medicines are taken alone |
| antagonistic interaction | antagonistic interaction |
| substance abuse | any unnecessary or improper use of chemical substances for nonmedical purposes |
| illegal drugs | chemical substances that people of any age may not lawfully manufacture, possess, buy, or sell |
| illicit drug use | the use or sale of any substance that is illegal or otherwise not permitted |
| overdose | a strong, sometimes fatal reaction to taking a large amount of a drug |
| psychological dependence | psychological dependence |
| physiological dependence | a condition in which a user has a chemical need for a drug |
| addiction | a physiological or psychological dependence on a drug |
| marijuana | plant whose leaves, buds, and flowers are usually smoked for their intoxicating effects |
| paranoia | irrational suspiciousness or distrust of others |
| inhalants | substances whose fumes are sniffed or inhaled to achieve a mind-altering effect |
| anabolic-androgenic steroids | synthetic substances similar to the male hormone testosterone |
| psychoactive drugs | chemicals that affect the central nervous system and alter activity in the brain |
| stimulants | a drug that increases the action of the central nervous system, the heart, and other organs |
| euphoria | a feeling of intense well-being or elation |
| depressants | a drug that tends to slow the central nervous system |
| narcotics | specific drugs derived from the opium plant that are obtainable only by prescription and are used to relieve pain |
| hallucinogens | drugs that alter moods, thoughts, and sense perceptions including vision, hearing, smell, and touch |
| designer drugs | synthetic substances meant to imitate the effects of hallucinogens and other dangerous drugs |
| drug-free school zones | an area within 1,000 feet of a school and designated by signs, within which people caught selling drugs receive especially severe penalties |
