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Shawnee, OK
A 17-year-old male asked:

when i take vyvanse (lisdexamfetamine) why does it take 3 hours for me to feel the effect and when i was on adderall i felt the effects right away ?

1 doctor answer2 doctors weighed in
Dr. Linda Callaghan
Addiction Medicine 53 years experience
Different onset.: There is an extended release Adderall which works like vyvanse (lisdexamfetamine). Some adderrall are short-acting and you can feel the effects sooner.

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Similar questions

VT
A 30-year-old female asked:

Is Vyvanse (lisdexamfetamine) stronger than adderall?

4 doctor answers13 doctors weighed in
Dr. Yash Khanna
Family Medicine 57 years experience
Vyvanse (lisdexamfetamine) &adderall: Vyvanse (lisdexamfetamine) is longer acting as compared to Adderall it lasts for 14 hours.It has less side effects.Vyvanse (lisdexamfetamine) is 100%d amphetamine, Adderall is conbination of four different amphetamine based drugs.
A 42-year-old member asked:

What is the difference between Adderall and Vyvanse (lisdexamfetamine) for add?

2 doctor answers5 doctors weighed in
Dr. Glen Elliott
Child Psychiatry 43 years experience
Delivery form: Both a amphetamine (amp). Adderall is a blend of d-amp (50%) and d, l-amp (50%). Vyvanse (lisdexamfetamine) is called a prodrug: it is d-amp linked to an amino acid. It is inactive till it gets in the body, where an enzyme cleaves the molecule, releasing d-amp. That means a very different release pattern, and it is the longest acting oral stimulant. Some like one, others the other. Both can be effective.
A 33-year-old member asked:

Could you give me more information about Adderall versus vyvanse (lisdexamfetamine)?

1 doctor answer3 doctors weighed in
Dr. Glen Elliott
Child Psychiatry 43 years experience
Sure.: Adderall xr has a two-hit delivery system, one kicking in 20-30 minutes after taking it and then again 3 1/2 to 4 hours later. Vyvanse (lisdexamfetamine) is a prodrug that is inactive till it gets into the body and is broken down into lysine and amphetamine. That means effects start up much more slowly (1-2 hours) and taper off much more gradually. Side effects and benefits are about the same.
Franklin, TN
A 21-year-old male asked:

Vyvanse (lisdexamfetamine) and Adderall no longer very effective, even with dose increases. It worked great a year ago. So, what now?

3 doctor answers7 doctors weighed in
Dr. Robert Killian
General Practice 28 years experience
Psychiatry: This question is impossible to answer in this type of forum . Your mental health expert will have your diagnosis and history and will have other options if you are no longer getting the appropriate relief from your symptoms.
Satsuma, AL
A 17-year-old female asked:

Why won't my physician let me try Adderall instead of my perscribed vyvanse (lisdexamfetamine)? I've heard Adderall is a more effective psychostimulant.

1 doctor answer1 doctor weighed in
Dr. Alan Ali
Dr. Alan Ali answered
Psychiatry 32 years experience
Adderall (dextroamphetamine and racemic amphetamine): Is vyvanse (lisdexamfetamine) not working?. What is the dose?.
Dr. Alan Ali
Dr. Alan Ali commented
Psychiatry 32 years experience
Provided original answer
If on 50mg., there is still room for adjustments, as per your doctor's advise.
Apr 28, 2013

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Last updated Jul 22, 2014
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