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It depends on the half-life of the particular drug you are interested in and a persons age, sex, and general health. Drugs are metabolized by the liver, and older people, such as 70 year olds, metabolize drugs much slower than someone in their twenties. Furthermore, if you have a damaged liver, you will also metabolize drugs slower. The longer it takes you to metabolize the drug the longer it stays in your system.

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14y ago

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