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A member asked:
I've taken 100 mg of vyvanse (lisdexamfetamine) yesterday at 9am and still can't sleep and it's after 4am the following day!!!!! help!!!!!!!
7 doctors weighed in across 2 answers
Overdose?: Vyvanse (lisdexamfetamine) is a stimulant with side effect of insomnia. If 100 mg was prescribed, the dose is unusually high and too much for you. If you took more than prescribed, you are lucky insomnia is all that's happened. Call prescribing doctor right away to review and advise. Best regards.
Answered 6/11/2017
2k views
Short act. stimulant: Doses above recommended dose of 70 mg can be used depending on severity of ADHD and patient's metabolic rate. If you have difficulty sleeping after 3-5 days, then you are most likely a SLOW metabolizer and need a shorter acting neurostimulant.
Answered 11/8/2016
1.3k views
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