what does the "half-life" of a drug mean?!


Question: What does the "half-life" of a drug mean?
Answers:

"The duration of action of a drug is known as its half life. This is the period of time required for the concentration or amount of drug in the body to be reduced by one-half..."

http://sonet.nottingham.ac.uk/rlos/biopr…



How long it will take for your body to use up half of it.
They don't tell you how long it takes for it to completely be used up because once half of it is gone, it takes the same time for half of that remaining half to be used up. Then the same with that half of that quarter that's left. And so on until it's all gone.




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