Sppech symptoms and conditions

My son was 4 when he started singulair chewable tablets for children for his allergies (winter and spring) he took it for 2 months and then we started noticing that he started to stutter/ stammer. His sppech was not like before. He would also make facial expressions like he is trying to force the words out with his eyes looking up. He also became excessively sensitive and emotional. He would cry over anything. He appeared depressed. Then I decided to look into his medication. I looked at a few websites and found other parents had complained about similar side effects - then one smart parent noted that singulair chewable tablets for kids contained large doses of ASPARTAME ! It was clearly labeled on the medication by Merck but to my shock it meant that I was giving my son with each tablet the equivalent of 5 cans of diet coke worth of aspartame ! Turns out aspartame is one of of the most horrendous things to anyone. If you visit websites about the subject you will be shocked at what the popular diet soda sweetner causes. Apparently it was the culprit. I took him off the medication immediately and his speech became normal within a couple of weeks. The same smart parent noted in her posting that she/he had given their child a split adult dose of singulair - since IT DOES NOT CONTAIN ASPARTAME ! apparently they put it in the children dose as a sweetner since it is chewable.... may be worth a try since the medication was very effective with the allergy symptoms - but for me I am gonna have to try to find an alternative...