Drug Ratings for CLARITINAverage Rating: 2.1 (771 Ratings)
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Results are sorted by Date Rating Was Added Key to Ratings: 1=LOW (I would not recommend taking this medicine.) |
| RATING | REASON | SIDE EFFECTS FOR CLARITIN | COMMENTS | SEX | AGE | DURATION/ DOSAGE | DATE ADDED |
  | F M | | | | |||
| 1 | Allergies | Depression, hypertension, mood swings and headaches. | I only took the generic once from my father's which to prevent me from having allergies. It is prescribed to him also. When I took it along with the 5HTP, the generic Claritin counters the 5HTP which put me in rage, cursing and depression. Please do not take Claritin or any generics of it with the 5HTP as it will prevent the 5HTP to relax the moods. When that happens, side effects will occur fast. I am very unsatisfied with this. It was my parents' idea to have me take it and I was so blind until I found this. I know I respect my parents, but I don't only when they make stuff up. Good thing the people experienced this as well. For me, I have hypertension autism. This anger has never happened to me when I don't take Claritin. For such a long time if I tried to remember taking one as a child, it happened to me for the first time as of 2012. I have to be constant vigilant myself and my family. This will never happen again. | M | 22 | 1 days 10 1X D | 3/18/2012 | 1 | allergies | My child developed tics taking this med. It was horrible. They stopped when I stopped the medicine. | M | 7 | 3 months 1 teaspoon 1X D | 3/17/2012 | 2 | Allergies | unexpected weight gain, nightmares, irritability | I looked up claritin's side effects today because I can't figure out why I suddenly started gaining weight - while I"m not 100% sure it was due to the claritin, I'm highly suspicious. It was too unexpected - I've been the same weight for years. When I saw this site suddenly other things made sense - I've been really irritable, and I'm an easy going person. And I've had nightmares, really weird ones, and I don't normally remember any dreams. I thought it just was the day, or a full moon or solar flares, or something, but reading all the other comments I believe now its the claritin. I'm stopping it today. My allergies were not too bad, I'll take my chances with just getting through the next month or two until the pollen levels out. Thank you for this site! | F | 44 | 14 days 10mg 1X D | 3/9/2012 | 1 | allergies | My 3 year old son is just not himself and the only thing that has changed was the addition of this medicine. It's more than just a bad day. This little boy is usually so mild mannered and compliant, but today he has acted like a different boy. He has beeing irritable, can't focus, super hyper, and then come bed time he started to cry (which he doesn't do unless he's hurt) and he hasn't stopped for hours. I'm exhausted and I just want my sweet little boy back. | M | 3 | 1 days 5mg 1X D | 3/8/2012 | 1 | Allergies | Do not take this crap! I've been off Claritin for 4 days now and I'm an emotional wreck. Can't eat, sleep and I'm very tired. Experienced serious depression coming off the drug. I'm 5 days off and can't wait to get back to normal life. I've taken off work because I can't function each morning. It did nothing for me and should be banned from the FDA. I dont any other pills or vitamins and I'm a very happy person. The withdrawls are the worst and will make you regret taking it. Looking forward to getting back to normal in a few days!!!! | F | 29 | 2 years 10 | 3/6/2012 | 1 | Sneezing, itchy eyes | Dizziness, metal fog, depression (no history of), anger, inable to do complicated things, headach at times, feeling like there is no point in going on with life, unable to find a reason to get up to accomplish anything, restless. | Aweful! I feel like I want to crawl out of my skin to get away from this feeling. I hope it wears off soon! Its been 20 hrs into a 12 hr pill :-( | F | 29 | 2 days 10mg 1X D | 3/4/2012 | 1 | Cold symptoms | Loss of appetite,hot & cold,nervous,very edgy,fast heart rate,nausea,loss of appetite,felt like skin was crawling. | This crap should not be sold over the counter! Totally ruined my life for about a week.I thought I was dieing.I used the 24 hr variety.Check with your doctor before using and then still be very cautious,if any serious symptoms occur stop taking immediately.Took for 2 days only,but took 5 more days to start feeling better. | M | 47 | 2 days 10mg 1X D | 2/22/2012 | 2 | Allergies | None. | It didn't do anything for me. However, I'm reading all these side effects other people are mentioning and I'm scratching my head. Depression? Anxiety? Nightmares? Loss of sleep? Irritability? I've had sleep problems my whole life and I've had anxiety issues before, but I slept like a baby while on Claritin (taken right before bed as I find my allergies get worse at night) and I didn't feel any more keyed up than usual. But I would be as reluctant to claim Claritin helps you sleep or relax (which in my case I could, as I slept just fine and felt fine while taking it) as I'd be claiming it causes wild and immediate brain chemistry fluctuations. Upset stomach? Quite possible. Dizziness or headaches? Maybe. But confusion? Hysteria? Somebody even mentions "out of body" experiences. Wow. You'd think we're talking about LSD here. You know what else could be causing all these symptoms, besides Claritin? Anticipation. Catastrophic thinking. Hypochondria. Fearful thinking. All unhealthy behavioral patterns of people who are already prone to having emotional issues. I know someone who is afraid of elevators. Every time he even imagines himself in one he feels jittery, anxious, his palms sweat, he experiences wild mood swings, he even falls into a deep depression. But even he is reluctant to claim elevators per se are the CAUSE of all those symptoms. Just my 2 cents. Out of curiosity, I checked some other medications randomly. Not surprisingly, they all seem to cause "anxi | M | 38 | 5 days 10 MG 1X D | 2/10/2012 | 1 | itchy nose, sinus problems | This is what I found and I thought I am going nuts over the past month. I can't wait till this drug is out of my system! My body is in agony:( Claritin side effects Side effects of Generic Claritin cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Generic Claritin. More common side effects of Generic Claritin: May include dry mouth, fatigue, headache, sleepiness. Less common or rare side effects of Generic Claritin: May include abdominal discomfort or pain, abnormal dreams, agitation, anxiety, back pain, blurred vision, breast enlargement, breast pain, bronchitis, change in salivation, change in taste, chest pain, confusion, conjunctivitis (pinkeye), constipation, coughing, coughing up blood, decreased sensitivity to stimulation, decreased sex drive, depression, diarrhea, difficult or labored breathing, difficulty concentrating, difficulty speaking, discoloration of urine, dizziness, dry hair, dry skin, earache, eye pain, fainting, fatigue, fever, flushing, gas, general feeling of illness, hair loss, hepatitis, hiccups, high blood pressure, hives, hyperactivity, impotence, increased appetite, increased or decreased eye tearing, increased sweating, indigestion, inflammation of the mouth, insomnia, irritability, itching, joint pain, laryngitis, leg cramps, loss of appetite, loose stools, low blood pressure, memory loss, menstrual changes, migraine, | F | 48 | 3 months 10 MG | 2/8/2012 | 1 | Allergies | Fatigue,Muscle Pain,Headache,Stomach Upset | I would advise anyone not to take this medicine. It's not worth it! | F | 49 | 1 days 10mg 1X D | 2/7/2012 | 2 | colitis | Terrible nightmares, dry mouth, anxiety | GI drs now give Claritin for the type of Colitis I have & now on average I have nightmares 5 out of 7 nights | F | 46 | 3 months 30 mg 1X D | 2/6/2012 | 3 | Allergies | My son is 6 and has been having trouble with his behavor at school and always not following directions or being off task. I read some of the comments and some of the parents said that their child was angry and hit him/herself and I started to look back at my child and he does the same thing. He will hit himself and sometimes it's for no reason. I took him off of it this week and he has shown some improvement at school. And another parent said something about eating habbits I know my son can eat and sometimes he wouldn't want to eat that much and is always saying his tummy hurts. I never throught in would be his allergy medicine until I took him off of it and read some of these comments. So not ever using claritin again. Not for my son and not for me either. | M | 6 | 3 years 2ml 1X D | 2/1/2012 | 1 | Allergies | My anxiety did peak after the first 6 months. Wasn't sure if it was Claritin or not? Then after 4 years of use I noticed hair loss, lack of energy, yellow jaundiced skin and eyes and found out that I have all of the symptoms iron deficiency anemia. The only med I take is Claritin. I have been off of it for 4 days now. Seems like the Claritin was possibly taking a toll on my liver. Waiting for 2nd blood test results. High bilirubin levels on the first test. | M | 37 | 4 years 15MG 1X D | 1/28/2012 | 1 | Dry up congestion | Horrible!!!!! My 3 year old daughter, after only 2 maybe 3 days of claritin, completely changed. She complained of an upset stomach and therefore wasn't eating much which may have contributed to the horrible night of hallucinations about bugs in her room and water and bugs coming out of mud. She was completely awake so it wasn't night terrors. It was very scary for my husband and I. She seemed almost outside of herself. I will never ever give claritin to my children again. And thanks to claritin my daughter has a new found fear of bugs. And this happened to her at least 30 hours after her last dose. I'm sure it was the claritin because of the shocking similarities to other stories on this website. Thank god i found an explanation to what happened to my usually sweet little 3 year old. I feel a little embarrassed and ashamed for ever having given it to her. It has made me question giving my children any allergy and cold medicine | F | 3 | 2 days 1tsp I/day | 1/11/2012 | 4 | allergies in air | insomnia, anxiety other then that, has helped. Was getting closing feeling in throat due to seasonal allergies and it opens me up in 10 mins | F | 35 | 2 days 5mg | 1/7/2012 | 3 | Post nasal drip | I only start Claritin when I get the "drips", that annoying post nasal drip that starts to run down the back of one's throat. This results in a lot of "throat clearing" and mild coughing. However, as soon as I try to "withdraw" from the Claritin, I get a full-blown cold. My doctor says I should always take Claritin, but I prefer not. Any comments? Similar problems? | F | 59 | 10 1X D | 1/2/2012 | 1 | Allergies | My Child is almost 2 I gave her Claritin for allergies and she was a COMPLETELY different child!!!! I will not give this to my child anymore! She was angry, throwing things, nightmares, nervousness, restless, EXTREME mood swings she was VERY scared of everything in the mornings. I feel HORRIBLE thinking it was just her terrible 2's in full effect. I wouldn't reccomend Claritin to ANYONE for their children! | F | 2 | 1 years 1 tsp 1X D | 12/16/2011 | 1 | Sinus Issues | I was unable to sleep, experienced uncontrollable shaking in my hands, anxiety, rapid heart beat, gas pain, felt "out of it" all night." | This drug needs to have these side effects listed! I have never had a more sleepless night. I did not experience nightmares as others did, because I douldn't sleep! I am glad i found this site. I will be throwing away the children's Clariton I have, as well as the adult Clariton. BTY - my sinuses cleared up, but now I am at work and can barely stay awake. The trade off is not worth it! | F | 36 | 1 days 10mg 240mg 1X D | 12/12/2011 | 1 | sinus infection | I feel like I'm in a fog and very irritated with even the stupidest things. Weird thoughts and depression. I just don't feel the same on this medication | M | 17 | 2 days 10 | 12/9/2011 | 1 | Allergies | Depression, anxiety, joint pain, both knees hurt very badly. I'm in great shape so this was all very bizarre. Stopped, all symptoms went away, back to old self. Went to health food store, bought some Quercetin and allergies are under control. No side effects. | M | 35 | 1 years 10 | 12/5/2011 | 1 | alerigies | Side effects? None. This doesn't help with anything. I take claritin like candy. I was prescribed yesterday, so I took three. Nothing happened. I still have horrible allerigies today and so I took 7. THIS PILL DOES NOT WORK. | Took 7 claritin and nothing happened. | F | 15 | 2 days 1 1X D | 11/17/2011 | 1 | conjestion | massive anxeity, complete loss of sleep, racing dark thoughts, shallowing breathing, crying outbursts | DO NOT TAKE THIS SHOULD BE BANNED | F | 27 | 1 days 30mg 4X D | 11/15/2011 | 3 | Stuffy nose, watery eyes, sinusitus | Severe depression especially with the generic brands. Several medical doctors told me this was not a side effect related to Claritin but I am certain it is. I have a comprehensive knowledge of psychological conditions and earned a degree in this area. After taking each pill, I feel like I have been crying all day. Furthermore, I feel like I should continue crying the rest of the day. If I didn't have a solid grip on my emotions, I would definitely experience crying spells. However, this medicine is the ONLY medication that remotely controls my allergies so I have to take it. My allergies are so bad that I'd rather deal with the depression :-( | F | 25 | 3 years 10mg 1X D | 11/7/2011 | 2 | fluid in ears and sinuses | very tired, anxious, butterflies in stomach, troubles breathing, extreme dry mouth, body feels like its vibrating internally, cloudy vision, constant urge to urinate, laziness, dont feel like doing anything, light headed, careless, racing heart. | F | 18 | 3 days 20 2X D | 11/5/2011 | 1 | Alergies | THANK YOU, THANK YOU, THANK YOU!! I am so glad I found this site! I have made appointments with 3 doctors, ENT, Neurologist & Internist to try to find out what is wrong with me! I have not been the same and felt there was something seriously wrong with me since taking this medicine! I was thinking a brain tumor or something! I am a very patient happy person and when I started Claritin I became, angry, anxious, had terrible thoughts and dreams, I felt like I was going crazy! After reading all of these posts I realize I am not alone and now know where to start! THROW THIS CRAP AWAY AND DON"T LOOK BACK!! I would rather sniff and sneeze!! | Should be taken off the market! This is some seriously terrible stuff!! | F | 41 | 30 days 1X D | 10/31/2011 | 1 | sinusitis | New and worsening depression, loss of libido. | F | 58 | 60 days 10 mg 1X D | 10/25/2011 | 1 | allergies | I am so glad I found this site. I thought I was going crazy. My 10 year old son was on this for a week. I felt like someone had taken my boy away and replaced him. He was a constantly anxious, angry, depressed, obssessive-compulsive child. It was the scariest experience I have ever had. He was even hitting himself in anger. I will never use this medicine again. | M | 10 | 1 weeks 10 mg 1X D | 10/25/2011 | 1 | sinusitis | Severe joint pain, muscle aches, insomnia, shallow breathing, agitation, depression, gastric upset, gas. | I am generally very fit, healthy except for sinuses. On no other medications. Taking generic 24 hour loratadine (have never taken loratadine-D) once daily. It helped some for a while, not dramatically better though, nose still runs quite a lot. Last few weeks steadily worsening joint pain. First 1 knee, then the other, then the right shoulder. Ache all over. Hurt to walk, or even to breathe. Shoulder hurt too bad to lay on back. Insomnia - normally have slept much better. Can't draw a deep breath, chest constricted and tight. Agitation, negative thoughts, depression, feeling of hopelessness. Increasing constant gas and gut spasms, pain. 2 nights ago laying awake, suddenly remembered I'd been through this before on loratadine. Quit and it all went away. Worse this time. Quit 2 days ago, getting better already. Not worth taking this stuff, throw it away! | M | 53 | 2 months 10mg 1X D | 10/19/2011 | 1 | very bad suicidal thoughts and depression | F | 13 | 2 months 1X D | 10/7/2011 | 1 | Bad Allergies | I actually took the generic claritin from wal-mart. I have taken regular clarintin for years. The generic however made me SO SERVERLY DEPRESSED. I could not wait for it to clear my system.. it was horrible.. | F | 45 | 3 days 10 1X D | 9/27/2011 | 3 | Allergies | Irratibility, Depression | I took Claritin for seasonal allergies and it seemed to work fine when I took it occasionally. When I started taking it as a daily medication, it did not work at all to treat my allergies and left me feeling irratible and depressed all of the time. If you only need allergy medication occasionally, this is a great option. If you need it as a daily medication, I would suggest trying something else. | F | 28 | 3 years 10mg 1X D | 9/21/2011 | 1 | allergies | My son had horrible side effects from this drug. It gave him nervous ticks he couldn't control. They stopped when he was taken off the medicine. If you have kids, beware of this drug. | M | 7 | 1X D | 9/15/2011 | 1 | seasonal allergies | My 7 year old daughter is also on Lamictal. However we had a terrible summer when she was on Claritin. Anger, hitting, biting mom and dad. Thought it was Lamictal, but realized it was allergy season and put two and two together. It DOES control her seasonal allergy symptoms. However the BEHAVIOR side effects are not worth it. Poor thing. | F | 7 | 60 days 30 mg 1X D | 9/7/2011 | 1 | allergies | deep dark depression and suicidal thoughts that ended when I stopped the claritin, not Claritin D, just the plain claritin . | This was the worst drug experience that I have ever felt, the thoughts that I had were so dark, and I am not that kind of a person. very scary! | M | 38 | 7 days 1X D | 9/4/2011 | 1 | season allergies | My 3 yr old experienced anger, crying jags, couldn't sleep, hitting his sister, hyperactivity and yelling. We began to see these side effects approximately 1 hour after taking one tablet of the Children's Claritin (Grape flavor). | This was recommended as a daily medication for my son to avoid asthma attacks brought on by seasonal allergies. We will need to look for another medication, since these side effects have been undesirable. I would not recommend this medication for children, based upon our experience. Side note: My son has responded in a similar fashion to one asthma medication and had to be switched. | M | 3 | 1 days 1 tab 1X D | 9/3/2011 | 1 | Allergies | Pounding headache,extreme anger/sadness | I would never suggest that anyone take this pill. The funny thing is that many allergy drugs have the exact same active ingred..but something about claritin is different. The anger and sadness and despair that this pill caused is so scary. I would rather suffer from allergies any day before i risk taking this drug again. You could seriously hurt someone on this drug . never again ! | M | 42 | 10mg 1X D | 8/31/2011 | 4 | Allergies | No side effects at this point from Claritin. | It would be helpful to know whether all these comments are about Claritin or Claritin D. Something tells me they are about Claritin D. I took that once and was so drowsy that I never took it again. | F | 48 | 5 months 10mg 1X D | 8/20/2011 | 5 | allergies (stuffed up, sneezing) | N/A | I'm somewhat surprised by all these negative reviews! Not that I don't believe them, but I have been taking Claritin since I was a little kid, same with my whole family, and we never had side effects. The only effect has been near-immediate relief! I've recently been taking the dissolves-on-tongue variety which is quite convenient, and relief lasts at least 24 hours with one or two exceptions over the course of abt. 3 weeks. very satisfied. granted, in Canada this was OTC and only recently (last 10 years?) it has become otc in the U.S., and I think it may be a slightly different composition. but again, I have taken in both countries with similarly good effects. to lighten the mood in here, here's a little piece on sneezing that I found amusing! http://www.purematters.com/healthy-body/allergies/sneezing-why-a-nose-blows thanx. -steve | M | 27 | 21 days ? 1X D | 8/16/2011 | 4 | Seasonal allergies | Had to pee rather often for the first 3 days, then no side effects at all | Didn't clear up my allergies 100% but boy did it help- I'd say 60% of my symptoms are gone and I have serious allergies to everything green. No side effects aside from needing to pee a lot the first few days. | F | 22 | 20 days 1X D | 8/16/2011 | 3 | Inflamed Sinus, allergies | Claritin-D 24-hour. Irritability. Felt like I was on speed, which vastly improved my Fifa abilities but I wanted everyone to leave me alone. | M | 25 | 1 days 1X D | 8/15/2011 | 1 | Allergies | I started taking these pills (generic Walmart brand) just 3 days ago and it took only one day for my mood to completely change. I have never felt such rage, anger, uncontrollable mood swings, wanting to cry, and generally just feeling like I'm possessed or something. I didn't even correlate the two until on a whim I did a google search for claritin mood swings and found this site. I think if I would have continued taking this med I would have done some serious damage to my personal and business life because this newfound temper had me cursing and yelling like I've never done before. Please be aware and spread the word on this possible side effect. I wouldn't be surprised if someone hasn't seriously harmed another while taking this drug. We all thought Prozac was safe until people started getting suicidal on it, Claritin is no different. | I don't know why it seems some people can take claritin with no side effects and some become raging lunatics. I suppose the biochemistry of the brain is more sensitive than we expect. It's a shame I can't take this because my allergies are gone, but I'll deal with a runny nose any day and not this crazy feeling. I read that it takes 3 days to get back to normal. We shall see. | F | 27 | 3 days 10 1X D | 8/11/2011 | 1 | Sinus infection | Drowsy, Lethargy, confused anxious & depressed. Couldn't make it out of bed. Confused at work. Restless sleep. | Don't take it, throw it out! | M | 33 | 4 days 30 mg 1X D | 8/1/2011 | 1 | allergies | extreme, uncontrollable crying and hysteria, depression, personality change (gloomy, moody), dark or hopeless feelings, easily set off. Also experienced rapid and irregular heart beat, heavy breathing to try to bring heart rate down. Out of body, jittery, and complete loss of appetite for food and life | This drug has too many extreme side effects that obviously just do not mix well with certain constitutions. The effect after only 2 doses was bad enough that I underwent a complete personality change. I would recommend trying another allergy medicine. | F | 29 | 2 days 10 mg 1X D | 7/27/2011 | 1 | allergies | unconsolable, unreasonable, crying for hours at a time without reason, moody, etc.. | our sweet little 3.8 yr old became unstable crying often without cause; hyper shyness and embarrassed not understanding his feelings, scared and hyper needy....a night mare for the last week until we figured it out....calritin's no good for his system! | M | 4 | 7 days 5MG 1X D | 7/16/2011 | 4 | hay fever | Depression and pain in neck and shoulder | Works well for hay fever, but side effects most unpleasant. | F | 64 | 5 days 10mg 1X D | 7/5/2011 | 3 | Seasonal Allergies | Loss of Libido | I used to take Claritin twice a wee, but I recently started developing irritating hives in conjunction with my allergies. For this reason I started to take Claritin daily. For about two weeks now I have had no Libido. Let me put this in perspective, I am a 26 y/o male. I work out consistently 3 times per week. I did some research and found out that Claritin daily may be the cause of my low libido. I stopped taking doses yesterday, and I already feel more sexually aware. Works for the allergies though. | M | 26 | 6 years 10 1X D | 7/1/2011 | 3 | Seasonal allergies | Extreme irritability and anger. Crying for no reason, distracted, no concentration. | My son was recommended this by pediatrician. We could not figure out what happened to our normally well behaved 4 year old son. He was grouchy and defiant, would not listen, cried and threw temper tantrums. We were starting to think that there was something really wrong with him. Then I thought that I would try a day without the Claritin and what a difference. He will not be taking it again. | M | 4 | 10 days children's 1X D | 6/28/2011 | 2 | allergies | within 90 minutes of taking Claritin 24-hour (non-drowsy): tingling of mouth, numbness in hands, elevated heart rate/pounding heart, light headedness, tremoring | F | 31 | 1 days 10mg 1X D | 6/28/2011 | 1 | seasonal allergies | A GREAT sadness, depression, and "loss of self". I felt like I was going crazy! This has been the worst emotional roller coaster. I am shocked that there are no warnings on this product. Certainly looks like I'm not alone with these reactions. | Please report your side effects so others will have appropriate warnings. It did help my allergies though and lifted the haze, but not worth the depression. | F | 34 | 2 weeks 1X D | 6/28/2011 | 2 | Allergies | very very drowsy and doconnected. Can NOT concentrate at work, when someone talks to me, I don't notice it until two seconds after. I HATE claritin, I would recommend taking ANYTHING else BUT Claritin. | M | 24 | 3 days 1X D | 6/27/2011 | 3 | allergies | more deppressed than usual. | F | 38 | 8 days 10 mg 1X D | 6/21/2011 | 1 | running nose, stuffy head | I can't take Sudafed, so I was told Claritin had no side effects. My heart started racing! It was a scary experience. I won't take it again. | F | 46 | 2 days 1X D | 6/20/2011 | 3 | Allergies | Extreme depression, overwhelming sadness, suicidal thoughts, extreme fatigue | Claritin cleared my allergies right up. But on the days I took it I cried nonstop except while I was sleeping which was off and on all day. I forgot to take them for a few days, during which time my depression lifted. I took another pill today, and all my side effects came back and even worse as this time I had suicidal thoughts as well. (Keeping in mind I just suffered a personal loss that would make me more prone to depression, but I think the Claritin exacerbated those tendencies, because off of it, I am not nearly so weepy and definitely not suicidal.) | F | 41 | 7 days 10 1X D | 6/17/2011 | 3 | allergies | none that i had noticed....but now after reading others i'm wondering if my nightmares may be from claritin...they dont happen often but....anyway i LOVE having nightmares so i guess that's not a negative to me. | just does seem to do much at all truthfully..:( | M | 39 | 6 months 10mg 1X D | 6/15/2011 | 5 | Allergies | None so far. Seems like a lot of the side effects listed here are for Claritin D which has other ingredients in addition to loratidine. | Please be carefull when you post that you are posting about the right drug. Your misinformation may lead people not to take a drug they need. Palpitations, fatigue and mood changes are all indiciative of Claritin with the Decongestant in it not straight claritin. | M | 45 | 45 days 10mg 1X D | 6/10/2011 | 1 | Allergies | Extreme Mood changes, Anger, Behavior problems, frequent uncontrollable crying, extreme changes in personality. | DO NOT GIVE CLARITIN TO YOUR TODDLER OR CHILD!!! Our little one has extreme allergies and her pediatrician recommended claritin daily. At first the mood changes were slight, she seemed a little more hyper and anxious, but after awhile THE CHANGES WERE EXTREME! She has always been happy, outgoing, easy tempered, and NEVER cried for anything unless she was injured, then suddenly, with regular use of Claritin she was unrecognizable. Angry all of the time, wild mood swings, crying for no reason, contradictory for no reason. Honestly the difference was STAGGERING. We noticed the times she wasn't taking the medication frequently she was more mild tempered, and back to normal. These warnings are not made clear by the drug company or by the doctor. I can't stress enough, DO NOT GIVE THIS TO YOUR TODDLER OR CHILD!!!!!!! | F | 2 | 6 months 1X D | 6/4/2011 | 4 | Seasonal Allergies | Nightmares! | This is one of the strangest drug side-effects I have ever experienced. From the first night after I took my first 24 hour dose, I had the most creepy nightmares I ever had in my life. Second night, similar nightmares. Third night, the same. And it was very obvious that Claritin was the culprit. But I am experiencing exceptional relief from my allergies. I just need to decide if these nightmares are worth feeling better during the day. And I DO feel much better. Too bad this drug has such a strange side effect. | F | 50 | 10 days 10 mg 1X D | 5/18/2011 | 3 | head and chest congestion | Boost in energy than almost no sleep all night and restless with some sweating(room was 72 degrees) and frequent urination. | Forgot the cardnal rule for this crap and took it at 9 pm. Take this in the morning so you can maybe sleep at night. Works well knocking out allergy symptoms though. Chronic trouble sleeping is the FIRST side effect listed on WebMD so beware. | M | 34 | 1 days 24 hr 1X D | 5/18/2011 | 1 | vertigo | took it thinking it was going to help with vertigo-like symptoms, realized it was the claritin all along, heart-palpatations, vivid wild crazy nightmares/dreams, complete and total lack of concentration, gastrointestinal side effects, feel like i was in a fog for days, DO NOT TAKE THIS MEDICATION you will not feel normal for days | if you are a pot-smoker, recreational or anything along those lines i absolutely had the worst experience ever, been smoking off and on for years and never had a worse experience with taking an over the counter drug, watch out i do everything the natural way, took a doctors advice and the pharmaceuticals made everything worse | M | 21 | 5 days 10 1X D | 5/14/2011 | 2 | seasonal allergies | Feeling sad, unhappy, crying over things not usually bothered by, feeling "out of self", itchy eyes, aggressive. My son had similar, but more drastic, effects a year ago from Zyrtec, so I was careful to watch for side effects this time. Within 5 days he started exhibiting signs of depression and became argumentative at the tiniest little thing. Like other parents on this site, I was contacted by his school today about his behavior. Not everyone is effected the same way, but you definitely need to watch out for your children. | He had suffered terrible seasonal hayfever type allergies. Although it did seem to make him sleep easier at night, he still suffered from constant sneezing, stuffy nose, and itchy eyes all throughout the day. | M | 8 | 9 days 10mg 1X D | 5/10/2011 |