4 doctors weighed in:
How long will a Vyvanse (lisdexamfetamine) stay in your system for if you only take one?
4 doctors weighed in

Dr. Johanna Fricke
Pediatrics - Developmental & Behavioral
1 doctor agrees
In brief: 12-14 hours
Vyvanse (lisdexamfetamine) is dosed once a day, in the am. Because the lysine has to be cleaved from the mixed amphetamine salts, its onset of action is about 2 hours after taking it.
Plan your dose according to the time of your first academic class or your work. On urine drug testing it shows up as amphetamine; student athletes have to show an empty prescription bottle to the coach.

In brief: 12-14 hours
Vyvanse (lisdexamfetamine) is dosed once a day, in the am. Because the lysine has to be cleaved from the mixed amphetamine salts, its onset of action is about 2 hours after taking it.
Plan your dose according to the time of your first academic class or your work. On urine drug testing it shows up as amphetamine; student athletes have to show an empty prescription bottle to the coach.
Dr. Johanna Fricke
Dr. Johanna Fricke
Thank
Dr. Jon Ahrendsen
Family Medicine
1 doctor agrees
In brief: Variable
Vyvanse (lisdexamfetamine) tends to stay in the system longer than many other adhd drugs.
But exactly how long it will stay active will vary somewhat from person to person, and even from time to time in the same person. Factors such as meals and the ph of the urine affect the metabolization of the drug.

In brief: Variable
Vyvanse (lisdexamfetamine) tends to stay in the system longer than many other adhd drugs.
But exactly how long it will stay active will vary somewhat from person to person, and even from time to time in the same person. Factors such as meals and the ph of the urine affect the metabolization of the drug.
Dr. Jon Ahrendsen
Dr. Jon Ahrendsen
Thank
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