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A drug's half-life is the time it takes for the amount in your blood to fall by half; it sets how often a medicine is dosed.
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After a dose, the level of a drug in the blood rises, then falls as the body clears it.
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Half-life explains dosing frequency, missed-dose rules and how long effects and side effects last after stopping.
A drug's half-life is the time it takes for the amount in your blood to fall by half; it sets how often a medicine is dosed.
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