Gutt symptoms and conditions

can someone please tell me how long it took for their child's thought to return to normal? My son has stopped singulair four days ago after reading this website. I had ruled out everything but could not find out what was wrong. After putting in his symptoms and that he took singulair i couldn't believe that I found it matched. He had stopped taking it for a month and had started back up on it. Please respond to a nervous mother of an eight year old who was a happy child who now had thoughts of knifes and scary thoughts

i had posted back a few weeks about my daughters situation on singulair well she has been off of the medication now for 3 and 1/2 weeks now and just starting last night she seemed to be a different child she has been on the med for about 14 months she is doing better in school not wanting to fight me on everything. now she is eating great which is scary when your child goes 3 weeks not eating due to being afraid.she was sent to mental health and the doctor said he had never heard of a reaction to singulair and she could go back on it we said it was not going to happen they said it was her being bull headed which we knew different.we were almost to the point where the doctor wanted to admit her to a physic unit . we had her off the med and within 1 week she started eating little by little we just about have her back to where she was.we video taped her having her fits and showed the dr. he just stated she is a handful. we let her see the tapes the other night she started to cry and asked what was wrong with her and we explained nothing baby it was the medicine that was making you do that and now everything is going to be ok .this is the 3rd time she has quit eating in 1 yr and we could not pin point it well now we think we know it was the medicine.they put her on zyrtec we only give it to her as needed not on a daily basis.