| A | B |
| drug | any chemical which affects chemical reactions inside our cells |
| medicines | drugs used to treat or prevent disease |
| antibiotics | kill bacteria |
| painkillers | egs aspirin, ibuprofen, paracetamol |
| recreational drugs | drugs not used medicinally |
| legal stimulants | caffeine, nicotine |
| illegal stimulants | cocaine, ecstasy, speed |
| legal depressants | alcohol, anaesthetics |
| illegal depressants | cannabis, heroin |
| illegal painkiller | heroin |
| hallucinogens | make you imagine things that aren't really there |
| all hallucinogens are | illegal |
| egs of hallucinogenic drugs | cannabis, solvents, LSD |
| phase 1 lab tests on | animal and human cells |
| phase 2 lab tests on | live animals |
| phase 1 clinical trials test | a small group of healthy volunteers |
| phase 2 clinical trials test | a small group of patients with the disease |
| phase 3 clinical trials test | a large grooup of people with the disease |
| most drugs are | addictive |
| cigarette smoke contains | nicotine, tar, carbon monoxide = bad |
| tar | a sticky, poisonous substance containing cancer causing chemicals |
| carbon monoxide | a poisonous gas which reduces the amount of oxygen carried in the blood |
| smoking can cause | premature birth |
| alcohol | slows down reaction times |
| organs affected by too much alcohol | the liver, kidneys and brain |
| the most dangerous illegal drugs are classified as being | class A |
| the least dangerous drugs are classfied as being | class C |
| cocaine comes from | the coca plant |
| some drugs, like ecstasy are synthetic which means they are | man-made |
| alcohol increases the chance of having an accident | because it increases time taken to react |