Question: how long does it take for your body to get used to vyvanse?
Answer: The peak effects are reached in approximately four hours. When Vyvanse is used in the treatment of ADHD, differences in behavior have been noted two to 12 hours after taking a dose. When Vyvanse is used to treat BED, it may take up to 12 weeks before a reduction is seen in the number of binge days per week.