This question has also been asked and answered here: How long does Adderall stay in your system?
14 Aug 2011
The half life of Adderall is about 10 hours.
This means that every 10 hours, half of the previous amount of Adderall in the body disappears.
For example, if you took 10mg of Adderall at 12AM (midnight), at 10AM 5mg of Adderall will be left in your body. At 8PM, 2.5mg will be left, and so forth until there is 0mg left in your body.
As a rough guide it takes about 5.5 half lives for a drug to be out of your system. For adderall then it would take just over 2 days for a dose to be out of your system.
(5.5 x 10 = 55 hours - which is just over 2 days)
2 Dec 2013
Generally speaking, Adderall & it's similar meds by Shire & GlaxoSmithKline i.e. Dextrostat, Dexedrine, etc. is 72 hrs. for urine. It's effects last long... roughly 4 to 6 hrs. w/ a T-1/2 or half-life of roughly 10 to 14hrs. Meaning 50% of it's biological activity is 10 to 14hrs. However, many factors determine the longevity of said drug in ur system. For example: Ph Levels in the stomach & urine affect how fast or slow the body eliminates Adderall. Moreover, aside from tolerance (which can be acquired by no fault of ur own) there is a factor that sometimes escapes ppl. = the body is a remarkable piece of work and ur LIVER learns to break down the drug faster the longer one is on it- that goes for a lot of meds tho. So, if u take Adderall for a yr. then, yes, ur liver will become acclimated to it. Thus, faster elimination. Also the drug's metabolites vary in amount of time in ur system.
When testing for drugs- some tests also screen for metabolites... i.e. Xanax has 1 of many, Alpha-Hydroxy etc. These metabolites also allow ppl, to know what u may have took. So, again- GENERALLY SPEAKING: 72hrs. Best wishes, Nootropic CX-717.
- Adderall Information for Consumers
- Adderall Information for Healthcare Professionals (includes dosage details)
- Side Effects of Adderall (detailed)
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