Hello hope43q. Vyvanse is an amphetamine. Adderall is amphetamine-dextroamphetamine. They are both controlled substances and used to treat ADHD. Vyvance, the dose is given once per day, whereas Adderall can be split up to 3 times per day. The maximum dose for adults taking Vyvance is 70mg per day. Whereas the maximum dose for adults taking Adderall is 60mg per day. How do they compare? Depends on the person taking either one of these drugs. The severity of ADHD differs from one person to another. They both are successfull in thier treatment of ADHD. Best wishes,pledge
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