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is used for ADHD
. It is an addictive drug. ADHD patients also predisposed to develop addiction. Due to these reason vyvanse should be taken under physician supervision only and in prescribed doses.
Apart from that dose also depend on weight of the patient. Many time medicines stop working due to development of tolerance. To prevent development of tolerance give drug holidays atleast once in a week.
Wish you all the best.
Dr Ashish Kumar Mittal