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A member asked:
How long does it take for by vyvanse (lisdexamfetamine) to get out of your system?
2 doctors weighed in across 2 answers
Clinical effects or : drug screen? The time it takes to have a "clean" drug screen depends on whether urine or hair is being screened; chronicity of use, formulation & dose; & size, health, metabolism , intestinal & urinary pH of the user. In general, it shows up for 4.5 -5 days, but can show up for 7, if chronically used. If you have a prescription for Vyvanse, (lisdexamfetamine) take the bottle to your drug screen. .
Answered 10/20/2016
1.8k views
Half-life: Half-life is time required to drop current dose/level by 50%. We estimate it takes 5 half-lives to get something out of your body (~3.125%). Of course, this also depends upon your metabolism, health of liver & kidneys & other drugs. Check out http://www.drugs.com/pro/vyvanse.html which notes that lisdexamfetamine is a prodrug that's converted in body into active dextroamphetamine. 96% out in 120hr
Answered 12/21/2015
1.8k views
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