How will the quantity of drug influence its effectivity?

Question

How will the quantity of drug influence its effectivity?

Answer 1

well, you'll have to be more specific. what drug are you talking about exactly? but with most drugs the answer is the same, if you increase the dose the drugs effectiveness is increased as well, until eventually the dose becomes too much for the body to handle and you o.d. on the drug.

Answer 2

The efficacy of a drug is the maximal response that the drug can produce.  This will depend on the quantity, or dose of that drug.  Taking any more will NOT result in a more effective drug. Taking less WILL result in a smaller effect.