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A member asked:

If i fail a ua for amphetamines because i've been taking vyvanse (lisdexamfetamine) without a perscription, will they be able to conform i was only using vyvanse (lisdexamfetamine)?

1 doctor answer1 doctor weighed in
Dr. Kathy Robinson
Family Medicine 33 years experience
Probably not: Drug screens show up generic amphetamines. It will just show up as amphetamine on drug screen. Please do not take amphetamines with a prescription. It could be very dangerous.
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Last updated Nov 21, 2014

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