1.   Cancer drugs often have unpleasant side effects, such as nausea and loss of hair.

2.   Every new drug has to pass a series of rigorous safety checks before it is put on sale.

3.   I had been told that the new drug had side-effects.

4.   If taken in small doses, the drug has no harmful effects.

5.   In a prison, drugs sometimes have to be used to control aggression.

6.   The doctor set my mind at rest by explaining exactly what effect the drug would have on me.

7.   The drug can have side effects such as headaches and sickness.

8.   The drug has first-order kinetics only at lower serum levels.

9.   The drug has powerful side effects.

10.   The drugs had no effect.