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A member asked:

I took a vyvanse (lisdexamfetamine) dose at 10:15am this morning and it was 40mg how long will it last and when should i be able to fall asleep?

A doctor has provided 1 answer
Dr. Alan Ali answered

Specializes in Psychiatry

Vyvanse (lisdexamfetamine): It is long-acting & can last up to 12 hours.

Answered 2/15/2013

5.3k views

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Related Questions

A member asked:

I just started taking Vyvanse (lisdexamfetamine) 30mg and im having trouble sleeping. Would it be ok to take ZzzQuil at night so i can sleep???

6 doctors weighed in across 2 answers

A member asked:

I take 30 Mg of vyvanse, (lisdexamfetamine) I take it at 8:00 a.m and by 8:30 I am sleepy so I sleep, how am I sleeping on this? Am I on the wrong medications for ADHD?

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A member asked:

How long should I wait to drink alcohol after i take 30mg of vyvanse (lisdexamfetamine)? I took my daily 30mg dose of Vyvanse (lisdexamfetamine) at 11:30am this morning.

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A member asked:

I take 210mg of Vyvanse (lisdexamfetamine) every morning per my doc. I tolerate this dose no problem, why does it worry ppl?

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A member asked:

What are the specific things I should be looking for with a dose of 210mg Vyvanse (lisdexamfetamine) every morning?

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People also searched for:

Taking 40 mg vyvanse (lisdexamfetamine). I can tell the meds wear off late afternoon but at night I can't fall asleep? Is the medicine not completely out of my system?
Why is it not safe to take ZzzQuil to fall asleep at night once you've had Vyvanse (lisdexamfetamine) during the day??
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