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Is adderall 20mg stronger than vyvanse 50mg?

This question has also been asked and answered here: Adderall vs Vyvanse - What's the difference between them?

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15 Nov 2011

In my own experience, what immediately comes to me to say is the Vyvanse. I'm on Vyvanse 70mg. BUT here are the differences: Adderall is instant release and lasts a shorter amount of time than the Vyvanse. I'd say the Adderall lasts about 4-6 hours tops (just regular Adderall, not Adderall XR). Vyvanse is a very long-acting med that stays in your system anywhere from 8-12 hours. So, you'd have to take 20mg of Adderall 3 times a day every 4 hours to equal 50mg of a one time morning dose of Vyvanse. Make sense?

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Jefer27 15 Nov 2011

yes thanks for commenting HPoole u summed it up..

HPoole 15 Nov 2011

No problem, friend!

Polynieces 2 Oct 2014

Anybody who has had a RNGB "gastric bypass" know this: Vyvanse is essentially an extended release medication. Works for about two (2) hours because the part of the stomach-- the duodenum, that releases acids, enzymes to activate XR medications-- is absent from the process. When Vyvanse works it's a very good medication but ask for immediate release medications (Adderall) for example. Although I'm going to ask my new doctor if I can take Adderall as booster.

14 Nov 2011

No. I'm going to answer your other question more thoroughly than this though. Give me a few minutes. :)
-B

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