Singulair and horror film

Singular has been recommended to my 3 1/2 year old son. I didn't feel good about it, so I declined and decided to look up possible side effects. Wow! I will NOT be giving it to him!
I have always been cautious on giving him antihistamines because prior bad side effects (which I never heard anyone else complain about).
When he was a few months old, he had cold like symptoms (runny nose, congestion, etc.) and was really suffering. I gave him the over-counter Pediacare and he could breathe better but he became something out of a horror film. He screamed constantly for over 48 hours and did NOT sleep a wink! Like a "crack baby" or something. (I assure you I am not exaggerating). I too became sleep deprived and crazed by his constant screaming, it took me some time to realize it was the meds. When I quit giving it to him, he became normal again. I decided I had to deal with the symptoms and not give him meds.
A year later, different medicine, I tried again. Same results.
When he was 2 1/2 we took a road trip from KY to KS. I thought I would try Benedryl, he had 2 older syblings that it benefited. NOT for him. He became "crazy" and screamed to the top of his lungs for the entire 12 hour drive. I vowed never again (for him or his family).
I have had success with Claritin in less than normal dosing. With no side effects. I have been assured, however, that Singular would work better for the symptoms. No thanks.
I feel really bad everyone this has effected negatively. I understand the side effects first hand.
I too have heard of the "antihistamine blocker" but don't know if it works.
I plan on trying a "nettie pot" (natural alternative) and have heard great allergy success stories. You can get them for about $5 at Walmart.
Hang in there parents! Do what you have to do for your child. Trust your instinks even over the Peditrician. I love Docs but YOU know your child. :)

I wrote an earlier post but I am now reading alot of your posts where you say your child experienced FEAR on Singulair. That is so interesting. When my son was on it for around 3 years he would never sleep alone in his own bed and he would have episodes every night that would last up to 3 hours at bed time because I would try to get him to sleep in his own bed, even at 8 years old. I thought he was possessed!!!! He would scream and fight me and I would literally have to hold him down to get him to stay in bed. It was horrible. I'm not sure how a hullicination would be described but maybe that was part of it. All I know is that he turned into a totally different child. It was something out of a horror movie. I eventually gave up and let him sleep in our bed cause it was exhausting. He would just make blood curdling screams and the terror in his eyes was horrific. Then the next morning he would be fine like nothing had ever happened.
Now that he is off of Singulair he will sleep in his own bed with the light off all night. It was an amazing turn around. He also told me he's not scarred anymore.. Who knew????? Has anyone else experienced anything like that with their child????