| A | B |
| drug | substance other than food that changes the structure or function of your body or mind. |
| medicine | drugs that are used to cure or prevent diseases or other conditions |
| Over-the-counter medicine | medicines that are considered safe enough to be taken without a written order from a doctor |
| Prescription medicine | medicines that can be sold only with a written order from a doctor |
| vaccine | preparations of dead or weakened germs that cause the immune system to produce antibodies |
| antibiotic | medicines that kill or stop the growth of certain germs |
| penicillin | widely used antibiotic |
| side effect | any reaction to a medicine other than the one intended |
| tolerance | develops when the body becomes used to the effects of a medicine and needs greater amounts of the medicine to get the same effect |
| misuse | not taking or using medicines the way the doctor ordered |
| abuse | using drugs in ways that are unhealthy or illegal |