A study was recently published which demonstrated that Vyvanse (lisdexamfetamine dimesylate) works up to 14 hours in adults with ADD/ADHD.
In this study, measurements of adult ADD/ADHD symptom control were taken at 2 hours post medication, and were found to be effective all the way to 14 hours after the medication was taken.
This can be important for adults with ADD/ADHD who need to have good symptom control throughout the day – to take care of many responsibilities through the day, including family and work responsibilities.
Based on this study – the FDA has allowed for a labelling change for Vyvanse – so that the product monograph allows for documentation of the 14 hour duration of Vyvanse in adults.
I’m curious to hear adults’ experiences with Vyvanse. Does it last up to 14 hours for you? Does it take 2 hours to start working? Please share your comments below.