2007-02-05 05:11:14 · 4 answers · asked by andrew b 1 in Science & Mathematics ➔ Medicine
It has a half life of about 4-6 hours.
PS- Half life is roughly the duration of action of drug.
2007-02-05 05:16:50 · answer #1 · answered by toietmoi 6 · 1⤊ 0⤋
In healthy humans, the elimination half-life of Biaxin (clarithromycin), that has been taken at a dose of 500 mg every 8 to 12 hours, is about 7 to 9 hours.
That means that the drug and all its active metabolites will clear or, be eliminated from your body, by 50% in 7 to 9 hours.
The clinical standard for "out of your body" is 5.5 times the half-life. so using 9 as the elimination half-life, the total time would be 49.5 hours or about 2 1/2 to 3 days.
This is a quick and rough way to determine a first order chemical reaction elimination rate; and is simple kinetics.
Drugs often have many active metabolites which must be considered.
2007-02-05 05:54:29 · answer #2 · answered by John 1 · 1⤊ 0⤋
Say you take the pill 4 times a day, that means 1 tablet every 6 hours. In that case the pill stays in your system 6 hours, which is why you have to take another one after 6 hours.
They have these pills you take 1 tablet a month, you only take 1 a month because it stays in your system for a month.
2007-02-07 18:48:40 · answer #3 · answered by angeliquedesjardins 3 · 0⤊ 0⤋
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2016-05-28 08:13:33 · answer #4 · answered by Anonymous · 0⤊ 0⤋