A 26-year-old female asked:
Disclaimer

i know vyvanse (lisdexamfetamine) is a routine drug. can i take an additional dose one day without my routine being messed up?

1 doctor answer
Dr. Johanna Fricke
49 years experience Developmental and Behavioral Pediatrics
Not a good idea if : you already have insomnia ! 70 mg. of Vyvanse (lisdexamfetamine) is the maximum adult daily dose. It lasts 12-14 hours. If you are feeling helpless/hopeless, please tell your psychiatrist. Discuss your treatment regimen & request a referral to a psychologist for Cognitive-Behavioral Therapy ASAP. Also, see your primary doctor to rule out medical causes of or contributors to your insomnia & depression . Take care.
Answered on Jan 24, 2015
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A 26-year-old female asked:
Dr. Paul Grin
Dr. Paul Grin answered
35 years experience Pain Management
It will for 2 days: Average half-life is about 8 hours. It takes approximately 6 half lives for a drug to be eliminated from your system. 8*6/24=2 days. The vyvanse (lis ... Read More
A 46-year-old female asked:
Dr. Edward Kuhnley
44 years experience Child Psychiatry
If Vyvanse (lisdexamfetamine) helps up: until a certain time, such as 2-5 PM but then symptoms return and interfere with function, then prescriber may add a short-acting amphetamine such as ... Read More
A 27-year-old female asked:
Dr. Jane Steiner
42 years experience Psychiatry
Not impossible, but,: This will definitely require conversation with your doctor. Vyvanse (lisdexamfetamine) should last longer than 4 hours. From the dosing you suggest i ... Read More
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