HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member 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 ?

A doctor has provided 1 answer
Dr. Linda Callaghan answered

Specializes in Addiction Medicine

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.

Dr Minich agreed

Answered 7/22/2014

4.4k views

Thank

Related Questions

A member asked:

Ritalin LA makes me depressed. Ritalin IR makes my anxiety worse. Adderall ER and Vyvanse (lisdexamfetamine) make me depressed. Can't take Strattera. Wht cn i tk 4 Adhd?

7 doctors weighed in across 3 answers

A member asked:

I was diagnosed ADHD (inattentive) and take 50 Vyvanse (lisdexamfetamine) in the morning and up to 40 Adderall the rest the day. The crash is unbearable. What can I do?

14 doctors weighed in across 4 answers

A member asked:

Hello - I take Adderall and Vyvanse (lisdexamfetamine) daily. May I take a magnesium oxide/zinc sulfate/calcium carbonate supplement?

6 doctors weighed in across 2 answers

A member asked:

What are the long term effects of adderall, Vyvanse (lisdexamfetamine) and ritalin abuse?

4 doctors weighed in across 2 answers

A member asked:

Adderall 60 mg and eight hours later 60 mg Vyvanse (lisdexamfetamine) but do not hav ADHD my heart rate is 134 BPM I have a pressure headache?

8 doctors weighed in across 2 answers

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

I have ADHD and i take Adderall 5mg and it has no effect i recently got prescriped 20mg of Vyvanse (lisdexamfetamine) and it only works for 3 hours why is this hapenning?
If I normally take 30 mg of vyvanse, (lisdexamfetamine) will it be safe to switch to 20 mg adderall?
What are the main differences between Vyvanse (lisdexamfetamine) and Adderall? Is it safer for an adult to take Vyvanse (lisdexamfetamine) vs. Adderall ?
Ran out of adderall not gettin new script till tm, have left over vyvanse (lisdexamfetamine) from when i used to be prescribed before i switched, ok for me to take 1 day?
Why do I have withdrawal like symptoms from starting Vyvanse (lisdexamfetamine) after ending Adderall if I was only taking 20mg of Adderall a day and take 60 Vyvanse (lisdexamfetamine) now?

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.