My 5 year old daughter takes Concerta in the a.m. and recently started clonidine at night. She has never been a good sleeper, and had such trouble falling asleep. She takes 1 pill about 1 hour before bed, and is knocked out within an hour. This solved that problem. However, she still wakes up every night around 1 am and has trouble getting back to sleep.
But, the clonidine certainly worked for her sleep latency issue.
Good Luck 
Hi there.Yes you are both right.My nephew is on it for both,to counteract the motortics for the adderallxr and it does wonders for him for sleep.It really is not helping much to calm him down with his adderall xr 5mg.
it stopped the motor tics.Oh he is on 0.1.mg of clonidine 1/2 tab in the morning and the other half at bedtime.Now we have to find a solution for the daytime again.His neuro is thinking about trying him on Celexa with the Adderall Xr in the morning.I will post that on another topic.I hope that I have helped.Always pm me if you have anymore questions about the clonidine.
Tj