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A 32-year-old member asked:

is it ok to hav 180 mg of vyvanse (lisdexamfetamine) in a day?

2 doctor answers8 doctors weighed in
Dr. Lisa Rankin
ADHD and Autism 25 years experience
NO!: The max dose of vyvanse (lisdexamfetamine) is 70 mg a day which is way below 180. A dose that high would not be prescribed and suggests the medication is knowingly being used improperly. Doses that high can have serious cardiac and neurologic effects. If doses of 70 mg do not help with focus and concentration than another med should be tried and another diagnosis considered.
Dr. Alan Koenigsberg
Psychiatry 42 years experience
No.: In my practice, I have patients with adhd who require a very wide range of doses. Some respond well to small doses of stimulants like Adderall or vyvanse, (lisdexamfetamine) and some others who need very large doses. Some patients have bowel absorption problems because of obesity surgery, and need larger doses to have an adequate amount in their brain. Talk to your doctor carefully and don't experiment.

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Similar questions

MT
A 39-year-old member asked:

What is the maximum does of Vyvanse (lisdexamfetamine) that is allowed per day?

4 doctor answers11 doctors weighed in
Dr. Kevin Olson
Family Medicine 34 years experience
Maybe 70mg: 70 (seventy) is the maximum daily dose. But this med is a stimulant and can cause heart and blood pressure issues. It should not be increased by more than 10(ten) mg. A week.
Middletown, NJ
A 31-year-old female asked:

Why does my Vyvanse (lisdexamfetamine) not seem to be affective after taking a couple days off? I would think it would at least b as helpful as the last time i took it

1 doctor answer2 doctors weighed in
Dr. Glen Elliott
Child Psychiatry 43 years experience
Great question!: Vyvanse, (lisdexamfetamine) like all stimulants, should work the first day you take an adequate dose. It differs from other stimulants in last longer; perhaps in your case, there is a bit of build-up, so you "right dose" doesn't happen until a day or so after you start. If you've used other stimulants and had a similar response, though, that would not be the explanation.
A 32-year-old member asked:

If a person has taken three 70 mg Vyvanse (lisdexamfetamine) in three days how long would it take to get out of your system?

1 doctor answer3 doctors weighed in
Dr. Elizabeth Finley-Belgrad
Child Psychiatry 34 years experience
Within 24hrs: The t1/2 or half life of vyvance-that is the length of time it takes 1/2 of the medication dose to get out of the body. This means the effect of the medication can be up to 14 hrs for some people. If you take the medicatio in the morning, you should have no more thatn a subclinical -or very small amount remaining in you body the next morning.
tx
A 21-year-old female asked:

Can you take 3 Vyvanse (lisdexamfetamine) 30mg pill a day? Like one at 7am next one at 2pm next one at 8pm ? It only last 4 hours for me and then i get tired after.

1 doctor answer2 doctors weighed in
Dr. Jane Steiner
Psychiatry 43 years experience
Not impossible, but,: This will definitely require conversation with your doctor. Vyvanse (lisdexamfetamine) should last longer than 4 hours. From the dosing you suggest it sounds like it must last more like 6 or 7 hours. I would worry about it keeping you awake almost all night this way. You could try to take a larger dose, it is possible it might last longer.Usually even plain Adderall will last at least 4 hours.
A 17-year-old female asked:

Help! i took a prescription Vyvanse (lisdexamfetamine) at 9pm instead of 7am. This has never happened. Its now 5am. I get out of school at 3pm. Can i stay awake all day?

1 doctor answer5 doctors weighed in
Dr. Pamela Pappas
Psychiatry 42 years experience
Vyvanse (lisdexamfetamine): Do you mean that you stayed awake all night? If so, you may get sleepy later, but you can probably still stay awake for school.

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Last updated Dec 4, 2019
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