| A | B |
| lethal | causing death |
| Food and Drug Administration | agency that checks to be sure drugs are safe |
| ibuprofen | drug used to relieve fever, pain, and inflammation |
| pain | signal from your body that something is out of balance |
| body | the kind of processes that all drugs change |
| tolerance | what you develop for a drug when you require stonger doses to ge the desired effect |
| testing | way to learn a drug's effects and side effects before people use it |
| interactions | what can happen when drugs are mixed |
| Reye's syndrome | an illness aspirin has been known to cause in children |
| antibiotics | drugs used to prevent bacteria from dividing |
| antagonist | a drug that prevents the action of another drug |
| effective | when a drug does what it says it will do |
| antihistamines | contained in cold medicines |