Sex: F
Age: 44.0
Side effects: I posted a rating earlier this week about feeling depressed, anxious and even suicidal while on this medicine. I have not taken the medicine for 3 days and the suicidal thoughts are completely gone. The last 2 nights I slept through the night instead of waking up numerous times. I am so glad I am off this medicine.
Time taken and dosage: 2 months10mg 1X D
Review: My brother-in-law has taken Singulair for quite a while now and has not had any bad side effects. So it does work for some people.

Sex: M
Age: 4.0
Side effects: Mood swings, lower frustration tolerance, easily saddened, throat clearing, humming, eye rolling, head turning
Time taken and dosage: 3 weeks7 mg 1X D
Review: We started our 4 1/2 year old son on Singulair per pedatrician suggestion due to seasonal asthma. Previously we treated him with a nebulizer (zoponex/pulmicort) as needed. Our pediatrician suggested Singulair as a daily remedy so we started him on it once the school year ended (first week of June). During the first two weeks we noticed some behavioral changes (easily frustrated, VERY emotional, intense play) as well as sporadic humming, mostly while he would be engaged in watching TV. When we would ask him why he was doing that he would say I dont know; it makes me feel better. This then led to a persistant throat clearing the following week and now, out of the blue, he has started repetitively turning his head as if he is looking at something next to/behind him. This is now happening in a wide range of environments (watching TV, playing, walking, during conversations). He says it makes his eyes feel better. Once the head turning began, and we looked at how these symptoms had developed, we determined that this could have something to do with the Singulair so we immediately took him off. It has been over a week now and he continues to repetitively turn his head, sometimes as many as 15-20 times a minute. Needless to say we are a bit concerned and are hoping that this decreases over time since these behaviors seem to result from his 3 week Singulair trial. Updates to follow.

Sex: M
Age: 15.0
Side effects: hyperactiity, depression,agression, mood swings, headaches,
Time taken and dosage: 5 years10mg 1X D
Review:

Sex: F
Age: 44.0
Side effects: I was not to tell any difference in my asthma. However, my thoughts and emotions were greatly affected. I have been having suicidal thoughts and even planning it. I have been having terrible mood swings. I snap at the least little thing. I am glad I finally realize its this medication.
Time taken and dosage: 2 months10mg 1X D
Review:

Sex: F
Age: 28.0
Side effects: None
Time taken and dosage: 3 years10mg 1X D
Review: I love this medication. I have been fortunate not to experience any side effects and have had lots of benefits. My asthma is never better than when I am on Singulair and it knocks out my allergies which are a main cause of my asthma. My mother had temporary depression when she started this medication but I never experienced that.

Sex: F
Age: 47.0
Side effects: weight gain, mood swings, manic behavior, nightmares, and anger
Time taken and dosage: 3 months5 mb 1X D
Review: great with allergies but the side effects are worse than the allergies.

Sex: M
Age: 50.0
Side effects: I have been unusually depressed - suicide thoughts - lack of mental acuity. Also, primary reason I took this was to get rid of a cough but I cough every time I breath cool air from air conditioning. Also experiencing breathlessness at times.
Time taken and dosage: 2 months 1X D
Review: I went online to see if my depression could be associated with any drugs I am taking. I also take blood pressure medicine (losartan) but have not had any problems with that in the past year.

Sex: F
Age: 46.0
Side effects: Immediately felt anxious, pounding in chest, and appox. 4 hours later my left arm was tingling. I felt fuzzy headed, not happy will not take another one again.
Time taken and dosage: 1 days5 mg 1X D
Review: Would like to know how long it takes to get the 5mgs out of my system.

Sex: F
Age: 43.0
Side effects: unusual weight gain, unexplained anxiety
Time taken and dosage: 4 months10mg 1X D
Review: While overall, the singulair increased my air flow at night to help me sleep better, I have experienced periodic bouts of anxiety for no reason. I have also had unusual weight gain in a short time (when usually pretty consistent)which I have seen mentioned at length on other sites, and is not a listed side effect. Please note too that the childrens formula contains aspartame which can lead to many of the side effects I see listed.

Sex: M
Age: 4.0
Side effects: NO SIDE EFFECTS WHAT SO EVER.
Time taken and dosage: 2 months4mg 1X D
Review: My 4yr old son suffered year after year with asthma, a terrible cough and chest infections. Each year would be worse than the other. He has been on 4mg once a day for the last 2 months and it has been the best 2 months of his life health wise. I have keept a very keen eye out for side effects and can honestly say, there are NONE. I will take him off Singulair in the summer months when there are no symptoms. But will put him back on when symptoms start up again. This drug has been a blessing for us I just wish it could be this way for eveyone else.

Sex: F
Age: 4.0
Side effects: wild mood swings; manic behavior; hysterical crying
Time taken and dosage: 4 days4 mg 1X D
Review: Our Ped. Prescribed Singulair for our daughter in addition to Zyrtec for constant allergies, post-nasal drip, and mucus. When a 4-y.o. comes to you and tells you that she had a freak out in school, you know that there are problems. Each night at home she would burst into tears hysterically and scream on the top of her lungs at the drop of a hat. The episodes would last about 20 minutes. The moment I stopped the meds, her behavior went back to normal. It did help her sinus issues, but the side effects were not worth it. Reading all of these comments makes me realize that I was not imagining this as my Ped. suggested. Thank you for your posts.

Sex: M
Age: 15.0
Side effects: irrability, focus on suicide, self harm, change in mood,nose bleeds
Time taken and dosage: 1 years10mg 2X D
Review: We have a 16 year old son, who has no history of depression or unhealthy ways of coping. Started a downward spiral, we did not know what was going on. He could not explain it,I dont knowTook him to counseling for help, they did not have an answer, or see something we couldnt. Read an article on singlair, and was outraged and shocked, never Knew there was a possible connection. Stopped the medication. Waited. THe next day, our son was back. Each day was brighter and brighter. Would not have believed it, unless lived it. Have it documented by counseling as well. Hoping to follow up with someone who can get the word out. Our sons life was saved, and we would like to help others. Thank you

Sex: F
Age: 23.0
Side effects: None
Time taken and dosage: 2 years10 1X D
Review: OMG, I can not believe all the bad things Im hearing about Singulair. I have been on this medication for two years for allergy season and it works wonderfully. When I got sick it took me a while to go to the doctor, which made my allergies even worse, but within the first week I started taking it I notice the difference. I breath better, I dont have any allergy symptoms and I sleep well at night. My bf has asthma and it works for him also. Are you sure you guys are not exaggerating? I work at a pediatrician office and most of our asthma and allergy patients are on Singulair and I have not heard any complains. The patients parents like this medicine.I know that every medication works different for everyone. Some medications work good for some people and for others they have nasty side effects but are you guys sure that yall dont have something else going on in your lifes that is making you guys depressed and act crazy!?.

Sex: F
Age: 50.0
Side effects: Emotional outbursts, flooding of thoughts, joint pain, racing heart, spaced out, insecurity and negative self talk, suicidal thoughts, hopelessness.
Time taken and dosage: 11 years2.5 MG 1X D
Review: Singulair did a great job on the asthma it was the other crazy side effects that took me over the edge. Used to be on 10 MG and am down to 2.5 and hope to be off of it soon. I spent thousands of dollars on therapy, counter balanced these side effects by taking more drugs: Adderall (ADD Drug) for the spaced out and inability to focus, VIOXX for the joint pain, bursitis and aches (until it was taken of the market), COUNTLESS natural remedies running me thousands of dollars. Currently I am detoxing and drinking Kangen Water. The Kangen water has been most beneficial for my breathing and detoxing whatever was giving me the asthma in the first place.

Sex: M
Age: 5.0
Side effects: Facial tics, body tics, very emotional, aggressive behavior
Time taken and dosage: 3 weeks 1X D
Review: While taking Singulair my son was 5 yrs old and became very emotional, he would cry at the drop of a hat over the smallest things. He also had sudden aggressive outbursts, which was not like him at all. He also developed several facial and body tics that soon became very severe to the point where he wasnt able to stop and couldnt function in normal daily activities. Within less than 24 hrs after taking him off of it we saw improvement of about 95%. I would not put any of my kids on singulair again, its not worth it to us!! I highly recommend that any parent considering giving it to their child weigh the benefits and side effects before giving singulair to them.

Sex: M
Age: 13.0
Side effects: My son has not had any of these side effects.
Time taken and dosage: 1 years10 1X D
Review: My son still has a post nasal drip cough but it is much better than it used to be. I wasnt aware of any of these side effects until a sticker appeared on his prescription this month.

Sex: M
Age: 5.0
Side effects: Aggression, Mood Swings, Depression, Suicidal talk, Hostility, Irrational, Not caring about consequences, uncontrollable rage
Time taken and dosage: 12 months4mg 1X D
Review: My son has been on this for a yr & we have noticed a tremendous change in him but we always blamed it on Zoepenex for his wheezing. I feel that the Singulair has controlled his asthma & allergies but we are about to seek help from a psychiatrist for his awful behavior. We started to read the side effects & are wondering if this is the problem. Met w/ his Asthma Dr. who says maybe & she recommended stopping it to see. We have decided to wait until the end of June when the pollen season ends. Its a catch 22, b/c if he wheezes off of it, then Zoeponex creates its own problems. Im scared to see him have an asthma attack but I am very worried about my family. This situation is affecting all of us. We cant take it anymore!! Will report back soon what happens. He was never like this before all of these meds.

Sex: F
Age: 36.0
Side effects: I took both Singulair and Accolate which is in the same class of drugs when they first hit the market. I experienced tingling in my legs, visual changes, and memory loss. Everything but the memory loss resolved as soon as I stopped the drug, the memory loss gradually improved over a year or so but Im convinced impacts me to this day. Clearly it wasnt worth the side effects, but the drugs made me 100% symptom free from my asthma.
Time taken and dosage: 1X D
Review:

Sex: M
Age: 3.0
Side effects: sore throat, vomiting, decreased appetite, increased aggression
Time taken and dosage: 5 weeks4mg 1X D
Review: My 3 year old son commenced on singulair as a trial to reduce the allergic rhinitis. Discussed with his doctor today regarding behavoural changes and possible side effects. He was not aware of behavioural changes with this medication. We agreed to stop the medication as I feel it is affecting his mood and at times uncontrollable rage. I also think is appetite has decreased. I do not believe this is age related.

Sex: M
Age: 50.0
Side effects: Moodiness, hostility, depression
Time taken and dosage: 2 years10mg 1X D
Review: Discontinued use today, would rather live with asthma symptoms.

Sex: M
Age: 5.0
Side effects: Heavy coughing if one dose is missed
Time taken and dosage: 30 days5mg 1X D
Review: Ive read many of the comments and it looks like my son will be one of the lucky ones. No mood changes, is doing great in school, sleeps well. The only anger problems we are facing is with our 2 yr. old who is not taking any meds. but has had a change in grandparents who watch him for us. So dont be so quick on the meds check who they may be exposed to. But I will take him off the meds for the summer so the body wont have long term effects such as the liver.

Sex: F
Age: 41.0
Side effects: Within days of starting Singulair granules: full-body edema (swelling), feverish for 18 hrs after taking med, sweating in sleep, weird dreams, poor sleep, legs so swollen they would ache, gained 1 lb week of fluid per week, asthma worse due to boggy tissues, muscle aches & stiffness. In the 2-3 days after stopping, all side effects are resolving and I have been peeing out this extra fluid endlessly.
Time taken and dosage: 21 days8 mg 1X D
Review:

Sex: M
Age: 47.0
Side effects: First year: Singulair with Nasonex - no notable side effects (6 month period). Second year: Singulair with Flonase generic - in 4th month of use I started waking up with feelings of depression that would not linger after I was awake. I can not be sure that the depression was caused by Singulair. I weaned myself off Singulair in a week and continued taking Flonase generic. A week later I noticed that my mental capacity had improved. While on Singulair I had difficulty in the evening getting motivated mentally to do anything, and also found it difficult to concentrate on complex tasks (computer programmer). The week after getting off Singulair I noticed a significant change. My mental capacity returned to normal (in the evenings: ability to focus on complex tasks, motivated to perform problem-solving tasks).
Time taken and dosage: 15 months10mg 1X D
Review: This is the second year I have been on Singulair. I wuuld start in February and take it til around August/September to treat tree and grass allergies. The first year I started in late March, but did not notice any side effects; I also used Nasonex; Singulair was not sufficient by itself to deal with my allergy symptoms. The second year I switched from Nasonex to a Flonase generic. Without Singulair and a steroid nose spray during my allergy season, I was unable to concentrate during the day (fuzzy, floating feeling from allergies, sinus pressure, etc), had to deal with sinus congestion, occasional sinus infections, frequent sore throat, cough, sneezing, physical fatigue, aches throughout body, and difficulty sleeping. Currently I am using the Flonase generic only. I still experience muscle aches throughout my body, physical fatigue, some sinus congestion, and sore throat, but have decided it is worth it to regain my ability to concentrate in the evening and feel motivated mentally throughout the day. Additional notes: I normally tend to have mild anxiety and difficulty sleeping, but do not experience significant feelings of depression without a cause.

Sex: F
Age: 20.0
Side effects: couldnt sleep!!!!!!!!
Time taken and dosage: 4 days10 mg 1X D
Review: It helped some of my congestion but I didnt really see much of a difference with the asthma. Never had problems sleeping at night, but on this medicine I did. I took it at night, and I couldnt sleep. Out of the 4 days I took it, I would get 3 or 4 hours of sleep every night. The 4th day I took it, I didnt sleep AT ALL and couldnt fall asleep during the day. I didnt take it the next night, and slept perfectly. I didnt wake up once during the night. Never taking it again

Sex: M
Age: 5.0
Side effects: NEGATIVE SELF-TALK, AGGRESSIVE BEHAVIORS, GENERAL NEGATIVITY, LISTLESSNESS, SLEEP HALLUCINATIONS FOR 2 WEEKS AFTER STOPPING DRUG - NORMAL KID NOW!
Time taken and dosage: 2 years04 MG 1X D
Review: MY SON IS 5YEARS OLD AND IS IN SAO PAULO BRAZIL , I CANNOT BELIEVE WHAT I AM READING,IT WORKED WITH THE RUNNY NOSE AND COLDS THAT HE WAS GETTING ONCE A TWO MONTHS,BUT ALL OF A SUDDEN MY SON IS MISBEHAVING IN SCHOOL, NOT STAYING IN HIS SEAT, HITTING OTHER CHILDREN, HE HAS NEVER BEEN LIKE THIS, I STARTED WORRYING ABOUT ADD OR ADHD, UNTIL THE THOUGHT CAME TO MY MIND THAT HE STARTED ACTING THIS WAY AFTER HE STARTED TAKING SINGULAIR, I AM DEFINATELY TAKING HIM OFF THIS MEDICATION!!!!DO NOT RECOMMEND THIS DRUG TO OTHER PARENTS. 5 YEAR OLDS THAT SUDDENLY AG AGGRESSIVE BEHAVIORS ARE INFLUENCED BY A DRUG!! YOU KNOW YOUR KIDS!! BELIEVE THE PARENTS WHO LOST THEIR CHILDREN AND LEARN FROM THEM. DOCTORS ARE NOT THE ALL KNOWING WHEN IT COMES TO YOUR CHILD - YOU ARE! THERE ARE ALTERNATIVES, FIND THEM!!!

Sex: F
Age: 60.0
Side effects: worked great for asthma, but then I began having leg cramps, at first mild, then severe, had to stop taking singulair
Time taken and dosage: 4 months10 mg 1X D
Review: Has anyone else experienced severe muscle cramps while on this medication? I am just wondering if others are having leg cramps.

Sex: F
Age: 21.0
Side effects: worsening of asthma, more frequent asthma attacks, mood swings, change in personality, depression, sleeping issues
Time taken and dosage: 1 months10 1X D
Review: My doctor prescribed this medicine for my allergies and asthma. Within 2 weeks my asthma worsened. I was having more frequent attacks and my overall breathing went down hill. The more I tried to sleep, the worse I felt. On top of that my moods began to change quickly and without much reason. There were multiple times I would snap and be verbally combative with my boyfriend with little or no prompting. Other times I suddenly felt very sad without being to pinpoint any reason and could not hold myself together. Crying bouts and inability to deal with fellow employees at my workplace sky rocketed. The mood swings and freakouts also contributed to more asthma attacks. Before taking Singular I had been aware that it had some negative side-effects in children. I had no clue that adults had also had problems with it.I have no doubt this medication works well for some people. According to the labeling most people can take this medicine and reap the benefits without negative side effects. For those of us that it does NOT help, its a very serious matter. I have discontinued use TODAY after my doctor realized something was wrong after the my last meltdown.

Sex: F
Age: 18.0
Side effects: Depression & Anxiety
Time taken and dosage: 3 years10mg 1X D
Review: Took Singulair on and off from age 13-16. I never really took the meds consistently until my sophomore year of high school. I was also depressed and anxious that year. I would break down crying twice a week to almost every day. I dont think it was 100% because of the medicine, but it may have contributed to the problem. I stopped taking it and the depression went away around the same time.

Sex: M
Age: 2.5
Side effects: Violent aggressive n mood swings for my 2.5 yr old like I had never seen before. Would advice parents take an informed decision before using this drug for little kids who dont even know what is happening to them and rely on parents for everything.
Time taken and dosage: 3 days 1X D
Review:

Sex: F
Age: 13.0
Side effects: Prevously took 5 mg on & off for 3-4 year, but when dosage was bumped up to 10 mg, had major depression, suicidal tendencies, lack of concentration, poor vision and trouble relating to family and teachers. After reading these reviews I am going off today & hope these side effects disappear.
Time taken and dosage: 3 months10 mg 1X D
Review:

Sex: F
Age: 22.0
Side effects: vivd dreams, minor drowsiness
Time taken and dosage: 5 months10 1X D
Review: Singulair has worked really well for me. It really helps to open up my airways. I take it in the evening, and I only experience minor drowsiness. The vivid and unusual dreams are actually really interesting, so they dont bother me at all. I think people need to realize that drugs will work differently in people, so not everyone will experience the nasty side effects. I love singulair and plan to keep taking it.

Sex: F
Age: 40.0
Side effects: HORRIBLE side affects - racing heart, severe anxiousness.lasting days after stopping! Probably did not take it long enough to notice any improvements to the asthma. HATED it - cant wait for the side effects to STOP.
Time taken and dosage: 2 weeks10mg 1X D
Review:

Sex: F
Age: 36.0
Side effects: Lethargy and depression. Immediately noticed difficulty focusing, low energy, and low mood. Weepy and sleepy for no good reason.
Time taken and dosage: 3 days 1X D
Review:

Sex: F
Age: 41.0
Side effects: I had fatigue; I took medication at night, but grogginess carries over into next day. Just wanted to sleep all day. Discontinued on 5th day.
Time taken and dosage: 5 days10 mg 1X D
Review:

Sex: F
Age: 55.0
Side effects: Drug was very effective with no side effects until about 3rd - 4th month when I realized I had become depressed, anxious, irritable, easily agitated, and easily angered with no to little motivation which was very atypical for me. Could not find a reason for it.
Time taken and dosage: 5 months10 mg 1X D
Review: Kept forgetting to pick up my refill so I rationed the remaining pills, taking one every couple days for a week and then went without for approx 5 days. By the 5th day having no singulair, I suddenly realized that I was back to normal with no depression, anxiety, etc. Will never take this drug again and hate to think what condition I could have been in had I continued on it any longer. So glad I found this out purely by accident. Am amazed at the very negative side effects and never suspected Singulair as the cause.

Sex: M
Age: 12.0
Side effects: eye and neck twitches
Time taken and dosage: 7 days5mg chewab 1X D
Review: My son just started taking this medicine last Thursday. So, its only been 7 days and yesterday and today I noticed he would turn his eyes all the way to one side or the other several times and then stop. I asked him if something was bothering his eyes and he said yes but he couldnt explain what the problem was only that he couldnt help it and couldnt keep from doing it. He was only supposed to take for a month to get through the spring pollen season here. But, Im not giving it to him anymore now that I realize the singulair is the problem. I asked him how long his eyes have been bothering him, he said it wasnt bothering when he went to the doctor, but now it is. Hes only 12 and has enough to deal with just being in middle school. He says hes been sort of embarrassed by the problem. I hope stopping the medicine will end the side effects.

Sex: F
Age: 38.0
Side effects: My 8 year old son has been on and off Singulair for approximately 3 years. As far as relieving symptoms of seasonal allergies and asthma, it does a great job. At times, he has a difficult time with concentrating in school, mood swings, eye and head tics / twitches, crying at night, worrying about his grades, etc. I have noticed when we get off Singulair for a week or so, these symptoms subside. Not sure what to do!! There has to be another drug out there that has the positive benefits as Singulair without these scary side effects!
Time taken and dosage: 3 years5 mg 1X D
Review:

Sex: F
Age: 3.5
Side effects: Within 24 hours, my even tempered 3.5 year old turned into crabby, crying, emotionally fragile child. He would melt down in tears and when asked what was wrong would say I DONT KNOW. He is usually very good at expressing himself, but since being on this, he is easily upset and confused.
Time taken and dosage: 4 days4 mg 1X D
Review: When he wakes in the morning, Im telling him he doesnt have to take this anymore. I had a bad feeling going into this.no reason why as I had never really heard anything about Singulair (positive or negative).I just had a bad feeling. I feel so terrible that my sweet boy has had such a difficult few days (major tantrums/meltdowns). Hes 3.5 and Im proud to say that I am always complimented on how lovely he behaves.not the last four days.poor sweet boy. I can only imagine its the medicine. He has only been able to express that he feels bad all over, but cannot pinpoint an exact location. He said he felt fragile and very sad for no reason at all.scary stuff.

Sex: M
Age: 36.0
Side effects: Vivid dreams but nothing horrible. I guess it all depends on what skeletons are in your closet.
Time taken and dosage: 1 months10MG 1X D
Review: Seems to work fine. my 6 year old daughter has taken it with no side effects. As with all new medication theres a bit of anxiety about taking it. I see alot of bizarre psychological issues on this board like aggression and even masturbation but those sound more like behavioraly issues. Ive never seen a drug force someone to do anything any. Can it make you irritable ? sure, some may but Ive seen no side effect from it yet.

Sex: M
Age: 6.0
Side effects: Angry, moody, tantrums, never happy, never smiling. Frustrated easily. Fighting constantly with sister and family.now even grandparents, aunt, etc.
Time taken and dosage: 3 years5mg 1X D
Review: My son has been on and off Singulair for years. When he was off in the summertime, I had my son back. After reading this site, I am thrilled to see that there might be a reason for this unbearable behavior. He does very well in school and this problem does not carry over there. So, I didnt attribute it to the meds. I am taking him off today and will be patiently waiting for a change!

Sex: M
Age: 8.0
Side effects: head twitches/tics
Time taken and dosage: 3 months 1X D
Review: My son starting taking Singulair on and off since January. I started giving it to him REGULARY the last week of January til about a month ago. What he experienced/now experiencing was/is head twitches. It was like a twitch to the side of his head, all day long for a month now. It was a ped on call that asked if he was taking singulair and said taht it was known to cause tics and twitches. He has been off for a month now and although the twitches has subsided they are still very-much-sothere. I plan to leave an update with hopes that I can help someone else out becuase I am claiming the victory over this medicine. To see my son go thru this has caused a major depression for me and has affected everything that I am involved in. But as I pray, I KNOW all will be well and that it will just take time for this drug to pass through his system. God Bless you all and I feel your pain.

Sex: F
Age: 30.0
Side effects: My 2yr. old has severe mood swings, temper tantrums, night terrors, insomnia,violent outbursts towards others.
Time taken and dosage: 1 years4mg 1X D
Review: Would not recommend use in children.

Sex: F
Age: 50.0
Side effects: none for me none for my daughter 11years
Time taken and dosage: 10 years5 mg 1X D
Review: before singulair my daughter had to use the nebulizer most winters, and had regular bouts of Bronchitis. I had serious sinus allergies. Weve both been very well since taking the medication

Sex: F
Age: 64.0
Side effects: None
Time taken and dosage: 11 years10 mg 1X D
Review: It has changed my life for the better. I can now breathe and be active, walk, play golf etc. I was steroid dependent prior to taking Singulair. It has been a miracle drug for me.

Sex: M
Age: 4.0
Side effects: mood swings, night terrors, nightmares, anxiety attacks, agressive behavior
Time taken and dosage: 4 days 1X D
Review: I actually left a comment back in December about my 3 yo taking the drug Singulair. I wanted to update, because I know that responsible parents are checking these sites hoping to learn more about the medicine!My son was actually diagnosed with post traumatic stress disorder after only being on this medication for FOUR DAYS! The hallucinations he experienced while on it kept him from sleeping in his own room for FOUR months, and we actually had to switch his room to a different room, completely redo the paint, covers, furniture, everything. It was a NIGHTMARE. Finally, four months later, he is returning to his old self. We actually have switched pediatricians because she again prescribed Nasonex after knowing everything we went through with Singulair.sure enough, the side effects are the same.Parents, please take caution. These are adult drugs they are giving to children.

Sex: F
Age: 45.0
Side effects: none
Time taken and dosage: 9 years10mg 1X D
Review: Have had severe asthma all of my life. I was on a ton of other old-school asthma drugs at very high doses before taking Singular. Now all I take is 10mg at night. I am symptom free.

Sex: M
Age: 7.0
Side effects: Son lost ability to concentrate. Screamed out nightly with night terrors. Normally an excellent student, but teacher called conference to discuss his lack of concentration.
Time taken and dosage: 1 months5mg 1X D
Review: Doctor told me it was absolutely not the singulair, but when I took him off the medicine he was back to my normal child.Took son to allergist and he concurred that he had heard about these side effects with singulair.

Sex: M
Age: 2.0
Side effects: my son has fever, swelling in the face, very irritable and most of all nightmares and trouble sleeping, also found trouble swallowing.
Time taken and dosage: 7 days4mg 1X D
Review: It does not help or has little effect, my son is two and he has suffered from nightmares and hyperactivity from day one. I would not recommend this drug to anyone with asthma. Today my son was diagnosed with a throat infection, needs ventolin again and GP told us to come off the SINGULAIR

Sex: M
Age: 6.0
Side effects: Easily angered, easily frustrated, horrible temper tantrums, PM restlessness, Bed wetting nightly, paranoid behavior, either loves something or more often HATES something - no middle ground ever
Time taken and dosage: 2 years5mg 1X D
Review: Wow,for 2 yrs.I was convinced my son had beh.probs.Hes the sweetest boy,very sensitive,but eas.angered. I have a Grad.Deg. in Clin.Soc.Work & my husb.is a Firefighter/Paramedic & not once did we consid.his Sing.He was very sick 2 yrs.ago when start.this rx & it was coupled w/liq.pred.& the nebulizer.His asth.& aller.improved signif.but we have dealt w/unbeliev.fits of rage involv.phys.aggres., daily I hate you,I wish I would die,I wish I was never born.He attends a very lov. nurt. Christian sch.& went from loving pre-k to fighting us on going.This year in K he was paranoid about kids not liking him & talking about him.We were very concern.cause his teacher whom we love stated that this is completely untrue & that he plays well w/oth.kids.At home we felt we were walking on egg shells daily.Hed be fine 1 min.& then complet.hateful the next.I kept thinking maybe hes tired from not sleep well at PM & there are no naps in K. He would easily take a 3 hr.nap at home on the wknds., again not normal. The bed wet.was improv.but then this yr it got worse sudd.& now looking back I realize it was when they uped his dose from 4mg to 5mg.We stopped Sing.on 3/16/10 & w/in 3 days he was a complet.diff child.Since 3/16 hes had only 1 temp.tant.& it was of norm.caliber for a 6 yr.old.He has been so sweet & goofy too.He warms our hearts daily.I cant believe there isnt more out there to educate peo

Sex: M
Age: 24.0
Side effects: Absolutely none. Allergic symptoms have decreased and my polyps have shrunk in combination with nasal spray therapy.
Time taken and dosage: 3 months10 mg 1X D
Review: A lot of people commenting here are doing what patients on a new drug often do: attribute every negative feeling and symptom theyre experiencing to a drug they recently started taking. Singulair did exactly what its supposed to do for me, with no side effects, and I will gladly continue taking it. Dont let the hypochondriac comments here discourage you from trying it.