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I was told there is no way Singulair could cause sleep problems with my child, so I've kept giving it to my 2 year old, who has horrible itching and allergies. But I finally gave up last night and started to google the drug and found this page. I'm taking him off it immediately. He can't sleep has horrible dreams and says he sees things at night. He sees birds and they scare him. At first I thought it was a phase, I can't believe all this trouble could be the drug.
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I am an adult female and took Singulair for about a week. Note that I am usually a happy person with little or no regular anger or anxiety.

I was told to take it at night which led to sleep problems and odd anxiety filled awake periods. I decided to move to morning doses and my head was cloudy, I was having helpless feelings and thoughts and had unusual anger levels. I still had to use my inhaler as often as before although I had a generally better feeling in my chest.

I am not going to take this medicine again and am going to figure out an alternative...
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I have had allergy shots since I was a kid. I've tried ALL the meds out there. Singulair is the only one that provides relief from the terrible, terrible pressure in my sinuses and nose. We're talking migraine-level pain that lasts for days and often weeks, and that radiates throughout my body. I've noticed an occasional moodiness that wears off after a few hours, but most of the time I'm actually much, much happier--I am pain free after years of suffering. One important thing to note: I am a small adult, so my doctor put me on the pediatric dose, and it's more than sufficient. So maybe lower doses could help some people who don't like the side effects of Singulair.

I just wanted to share my experience to let people know that for some people, Singulair is a good or even great solution. It might result in unacceptable side effects for others, but I thought I'd give the story of someone who is very grateful that this medicine exists. I feel like I can give my family and my job the energy they deserve and demand.
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I came to this message board seeking info about Singulair withdrawal symptoms . Now, I am concerned about the affects of my son having taken it since he was 2. He is now 6 1/2. He is having terrible temper tantrums that go on for 2 hours and very angry. He won't know what set him off and what happened during his rages. We have also been having problems in school with behavior...mostly depressed-like, tired, and not willing to do his work. We have always had times of behavior problems with him, but since he started Singulair so early it is hard to remember if behavior issues started when he started Singulair.
Does anybody have any info in regard to coming off the Singulair after prolonged use? It seems the rages were increased for about 3-4 weeks after stopping singulair cold turkey.
FYI...I also had serious problems with Zyrtec..I noticed that immediately after first dose and I never put him back on it!! Very bad drug!!
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mayes

edited by moderator***web addresses not allowed
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Oh my Gosh!!! Reading all these experiences blows me away. I have experienced the same thing with my 3 yr old son. I never thought it would of been his medication. He was diagnosed with asthma at 2 yrs old. Last October his pediatrician prescribed Singulair. I would give it to him now and then, not frequent. In March he began having frequent Asthma attacks and his pediatrician asked if I had been giving him his Singulair. I stated not frequent only when he had attacks. He advised to start giving him his tablet once a day especially during Allergy season.(April-July) After about a week of taking this medication, he became a demon child. He was very grouchy, he was very mean to his 10 yr old brother and others. He wouldn't want his brother to speak to him or even look at him every morning. It was horrible. I didn't know what to do. His brother would get sad because I would tell him not to speak or look at his little brother when he would be in his bad mood. Some nights the little one wouldn't want to sleep. He would turn on his TV after we all went to sleep. I would wake up from noise in his room about 2-3 am and he would be wired up with his eyes wide open like he was hypnotized. He would be watching tv and playing basketball. He would talk to himself in the room. He would cry and have a kicking tantrum when I tried to make him sleep. I would be up with him for 2 hours before he would finally go to bed only because I forced him and fell asleep with him. I also noticed that sometimes he would cry in his sleep as if he were having a bad dream. I was not getting any sleep because I was worried about what he can get into up alone at night. I finally took him to the doctor to talk to him about his behavior and he stated that my son was fine, normal, but only had a behavioral problem that I had to deal with. He advised to take the TV out of his room and didn't think he should have a TV in his room. I thought well, I have a little brat on my hands that I have to deal with.

Well, after his bottle of Singulair finished and after 2 months of taking them. We watched him suffer with his horrible attitudes, mood swings and bad physical behavior. I thought why was I punished with such a troublesome child? It was really bad. I was going to start to see a psychologist myself. His prescription ran out and I didn't get it filled. I kept forgetting to call in the prescription. After about 2 weeks he started to settle down and not be as grouchy. It has been 2 months now and he stopped with all his fits, he doesn't cry in his sleep and he doesn't treat his brother that mean any more. He even sleeps through the entire night. I just thought God answered my prayers. I was speaking with my friend who is a nurse and she was following up with my experiences with my son. She had told me a story about her son and that he was on some medication called Singulair that she noticed her son acting strange and she looked it up and saw all the negative side effects. She stopped having her son take it immediately. When I heard the name of the medication, I was shocked. I realized that was the same medication my son was taking when he became so different. I told her this was the same medication my son was taking during that 2 month period when he had the severe behavioral problem. She was equally shocked because she didn't think to ask if he had been taking any medicaitons. We were both shocked today when we talked. I am never going to give my son that medication either. I am also going to call his pediatrician and tell him that my son does not have the behavioral problem he was insinuating, but he had one as a severe side effect from the drug he prescribed to him.

I would have never known if it weren't for my friend sharing her experience with me and looking it up on the internet and finding this website. That is why I too must share and let others know that this drug SINGULAIR is Horrible and I just hope it did not do permanent damage to my little boy. He is still moody, just not as severe. It is tollerable now.
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wow i am in shock. i had my 3 year old boy on singulaire for a month and his behaviour was crazy!!!!! reading this gives me goos bumbs. and i just start him again on it because his breathing problem.
i don't want to go through the same behavoiur problems again. i have to stop this medication..
Those doctors have no ideea about this???
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My 15 yr old daughter has been taking singulair every morning for a year now but last nov she switched to nite cuz her Dr says that i was just wasting my $ as this drug only works at night. 2 weeks ago she complained of having nightmares for that week. weekend came no sleep for 4 straight nights. as days went by she became very confused, paranoid, depressed, anxiety attacks and worst part her in a catatonic state.
What a nightmare seeing her in this insane condition. Someone should do something fast before anybody else experiences this and worse......death!
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My daughter is 5& 1/2 and gets croup a lot so she was put on Singulair. She has been on it for 3 weeks and the last 2 weeks she has not been herself, very angry at me her dad and her sister, I would ask her to do something and she wouldn't listen, throw temper tantrums while we were out. Today I just said to my Dad it has to be the tablets she's on. After reading everything that has been written I would like to thank you all for the posts. It is really great to hear what other parents have been going through so you know its not in your head and also it is great to get an adults take on what Singulair dose to them so you know what it could be doing to your child and how they may be feeling.. It has let me make an educated decision. Thank you
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Jen - what does your son take now? We are in the same boat on all these allergy meds for my now 4 year old.
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I know this is long, but for parents wondering if Singulair is the source of behavior problems with your child, please read.

My brother (born 18 years after me) was diagnosed with asthma at the age of two, and the doctors put him on Singulair initially. His asthma definitely improved, but his behavior changed significantly. I read quite a few posts about patients becoming edgy and moody or even having suicidal thoughts, but that's not what happened here. He just became...wild. He couldn't focus. He was bouncing off the walls. He would do things even though you specifically told him not to. And yes, I'm sure the fact that he is two was a contributing factor, but I find it ironic that all these typical two year old behaviors happened right at the time he went on this medication, and when my mom took him off the medication, he changed back to his usual happy, obedient, eager-to-please self. My mom took him off the medication, as stated prior, and his asthma did go away after about two weeks without any significant recurrence. We have noticed that when he gets allergies or a cold it usually hangs on a bit longer, probably because of the asthma, but the Singulair was not right for him and so after only a few months, it was time for it to go.

My son is three and last winter he was diagnosed with asthma. I gave it to him just for about two weeks, but had to stop because I was noticing some odd behavior, similar to my brother's behavior when he was younger. Nothing too extreme, but it was enough to make me think that the cold he was battling could be combatted without the help of Singulair. He recovered just fine in about two weeks and also did not repeat those strange behaviors after I took him off of it. Now over a year later, allergy season is in full swing, and once again, he has a constant cough that the doctor said is a result of his underlying asthma problem. I've had him on Singulair for a week now, and just like before, the behavior problems are back - but worse. Today, he was such a chatterbox. He normally is very talkative, but today it was beyond his usual chattering. It was as if he couldn't control himself. His eyes also seemed very glazed over, and he did things that he typically does not do. For instance, in the bath tub this morning, he took a cup and filled it up with water and very enthusiastically chucked the water out of the cup onto the bathroom floor...repeatedly! He never does this, and is actually very good about trying not to spill or make big messes. Of course I was upset and asked him why he did that and he started crying uncontrollably. A little later, he was going to the bathroom and I heard the toilet flush about five times right in a row. I came in to see him stuffing his fist down the toilet and flushing it to see if it would suck his hand down. Normally he thinks the toilet is very gross and does not like to touch it, so this was definitely a behavior that is NOT typical for my boy. Later, I found him standing on the dresser in his room trying to jump off. Never does this, either. Instead of playing with his trains on his train table, he was throwing them as hard as he could at the window. (There are several more, but these are the ones that baffled me the most.) All of these things were enough to nearly make me lose my mind, and this was just all in one day! Like I said above, it was as if he could not control himself, and I am convinced it is the result of the Singulair. Tomorrow I think I am going to go to the doctor and ask for something else besides the Singulair because it seems to me that this drug is just not a good one. Especially after watching my brother go through pretty much the same thing, I feel very strongly that Singulair causes big problems.

Good luck to everyone trying to find answers...I will never recommend Singulair to anyone!
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I was recently prescribed with singulair and took a tablet yesterday. I felt an immediate change in my mood like my emotions were amplified. I have a toddler who is very active and his normal curiosity pushed me over the edge very easy. I was in abit of a rage and it was very weird. After a day has past and the med is out of my system, I felt better again. Like a switch was turned off and I am responding normal again. 

For those with children and those who feel mood changes, I truly believe it is due to singulair and to consult with your doctor. For me, I will report it to my doctor and stop it right away. The side effect is too scary just to get a relief from allergies!
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OMG,,my 2 year old has been on singulair for almost 3 months now, the reason that got me to further investigate is the fact that his appetite is out of control and he's gained soooooooooooooooooo much weight withing the last couple of months. After reading the above pots, it hit me that he's been constantly complaining from most of the mentioned above ESPESICIAlly the stomache ache. Thankyou soo much for all the input but sth MUST be done to get this drug off the counter!!!

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          I too have suffered with my chldren on singular. I have twin girls age 5. For months now my home life has been turned up side down. It was like over night they turned into into demons. They began fighting with each other, not listening to me, calling me names and hitting.  I am mad at the fact i was not warned odf these side effects. It has torn my world apart.  After realizing that this isn't my imagination and many others have suffered simular things I am stopping this medication for good!

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I was on Singulair twice the second time ,was on Chantix for quitting smoking, by second month my moods were VERY erratic, and considered swerving my truck into oncoming traffic ...to see what it was like(?!)...I mentioned to doc , who was NO good to me, said he never heard any reactions to ths drug...I weaned off on my own, and went w/ Zertec(generic) every other day...it works and symptom free
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