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A member asked:

Approximately how long should the effects of a 20 milligram adderall (dextroamphetamine and racemic amphetamine) last?

A doctor has provided 1 answer

1 day: The half-life of Adderall (dextroamphetamine and racemic amphetamine) is10 hours. So, after 24 hours, there wouldn't be left in your system.

Answered 6/24/2014

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Related Questions

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Can you tell me how long it takes 30mg Adderall (dextroamphetamine and racemic amphetamine) last?

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How long will 15mg of ir Adderall (dextroamphetamine and racemic amphetamine) last compared to the 15mg of xr.

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Is there withdraw associated with adderall (dextroamphetamine and racemic amphetamine)? If so, how severe are the symptoms, and for what length of time do they last?

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A member asked:

Been on Adderall (dextroamphetamine and racemic amphetamine) 25mg XR for over a year now it seems to make me very ill when in me an of don't last but three hours i on 50 mg XR a day?

A doctor has provided 1 answer

A member asked:

I'm taking 30xr Adderall (dextroamphetamine and racemic amphetamine) twice a day and it's not lasting as long. I feel like I need 3 a day to last me through the day. But isn't that a lot.

A doctor has provided 1 answer

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