During phase one of drug trials the medication is administered to healthy volunteers in a controlled setting. These volunteers undergo regular, timed testing, particularly blood tests, to see how fast the drug is eliminated from their body.
Once you know the half life of the medication you can make determinations of how often the drug has to be taken.
laserbronson t1_j47auav wrote
Reply to How do drug trials determine dosage time limits for medications? by dante662
During phase one of drug trials the medication is administered to healthy volunteers in a controlled setting. These volunteers undergo regular, timed testing, particularly blood tests, to see how fast the drug is eliminated from their body. Once you know the half life of the medication you can make determinations of how often the drug has to be taken.