If the asthma has been under control for several months at a certain dose of medicine, the dose may be reduced.

Most smokers are hooked on nicotine and crave a certain daily dose.

In certain doses it causes almost immediate death.

Some vaccines may not work as well during treatment with steroid medicine at certain doses.

So after a certain dose, taking more drug does not lead to higher levels of amphetamine in the bloodstream.

In some territories, such as the UK, only certain doses may be available.

Not until you get below a certain dose does the fog lift.

Both furosemide and salicylic acid are considered ototoxic at certain doses.

They are, therefore, taking a stand against the medical profession, a stand that comes down to accepting a certain dose.

The evidence supports putting someone on a certain dose of a statin.