Lisdexamfetamine
"My 7 year old son started Vyvanse about 3 weeks ago.  The first day he took a 30 mg dose which made him like a zombie all day and absolutely manic all night.  He literally stayed up all night and ran up and down the hall and talked incessantly.

At the end of my rope at 7 am I paged his doctor.  We lowered the dose to 15 mg.

He seemed initially to do better on the 15mg and was doing well in school.  He became more aggressive and started having OCD behaviors of constantly washing his hands (I counted 30 times in an hour) and crying and staying up all night.  Last night he stayed up until 4:30 am and I was at my wits end.

So today his doctor is switching him to another medication but we may try it in a combination."