What could be causing insomnia?

[Guest guest]

The past two nights one of my boys (who is 4 years old) has been having trouble

settling down to go to sleep.  Instead it sounds like a party is going on in his

room as he bounces on his bed for hours and not going to sleep until after 2am! 

We have not had this problem in two years since we first introduced melatonin.

 

Recent changes in their supplements/medicines have been the start of Neurontin

(building up slowly) and Biocidin.  Could either of these be causing this

problem?

 

Thanks, Dana