I have a 9 year old son who's been treated for allergy-induced as...

I have a 9 year old son who's been treated for allergy-induced asthma for several years. About 2 years ago he was put on Singulair and it seemed to help quite a bit. I eventually weaned him from it and he did really well until about 2 months ago, when he had a bout of allergy/asthma. His ped put him back on Singulair and started albuterol, along with the Flonase he was already taking. Just over the past 2-3 weeks we've noticed a complete change in his demeanor. He normally is a bright, loving, sweet kid who excells in much of what he does. Lately that has all changed. The first big red flag was seeing him hit himself when asked to do something more than once (ie make his bed). He'd hit himself and call himself stupid. He went from that to saying he just "needs to go away". And finally admitted that he wants to kill himself sometimes. Has a "plan" and everything. I read some of the reports similar to the ones here and took him off both the Flonase and Singulair. His moodiness increased and even went toward mania in the two days that followed removing the med. 5 days after stopping the meds, he leveled out considerably and also had an asthmatic attack that night. Sounds to me like the "levels" of meds dropped at that point. We are now 1 1/2 weeks past stopping the meds and things are returning to normal, though he is still struggling somewhat. He also has exhibited physical "tics" - throat clearning, sniffing, rubbing his chin on his chest, head shakes, shoulder shakes, etc. on and off since first being put on Singulair. Those have escalated with the other symptoms. And he's also complained of achy legs. I wonder if there is any way to report these issues and have them taken seriously.