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Mm honestly it depends on the persons shape/body. I'm 57ish and 150ish pounds and 1, 25mg Adderall lasts about 7-10ish hours.

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17y ago
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12y ago

The half-life for amphetamines is 10-14 hours. ..so around 20 hours. Depending on your metabolic rate. More time for extended-release (Adderall XR)

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14y ago

it should be out in about 11 hours

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Q: How long does it take for a 20 mg adderall xr to get out of your system?
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