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Review: Claritin side effects

In this review, we analyze Claritin side effects by the time on the drug, gender and age (0-60+) of the people who have side effects while taking Claritin. The review is based on 22,738 people who have side effects while taking Claritin from FDA and social media, and is updated regularly.

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What is Claritin

Claritin (latest outcomes from 24,198 users) has active ingredients of loratadine. It is often used in allergies.

Other drugs that have the same active ingredients (loratadine): Claritin Hives Relief, Claritin Reditabs, Claritin Hives Relief Reditab, Alavert, Loratadine, Children's Claritin, Loratadine Redidose.

On Jan, 29, 2015: 22,738 people who reported to have side effects when taking Claritin are studied


Most common side effects over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
DizzinessHepatic Function AbnormalWeight IncreasedLeukocytoclastic Vasculitis (inflammation of small blood vessels (usually post-capillary venules in the dermis), characterized by palpable purpura)Dyspepsia (indigestion)Fatigue (feeling of tiredness)DepressionPain
Dyspnoea (difficult or laboured respiration)Drug IneffectiveEmotional DistressTubulointerstitial Nephritis (a form of nephritis affecting the interstitium of the kidneys surrounding the tubules)Mitral Valve Incompetence (inefficient heart valve)Osteoporosis (bones weak and more likely to break)Emotional DistressNausea (feeling of having an urge to vomit)
Loss Of ConsciousnessAlanine Aminotransferase IncreasedCognitive Disorder (mental health disorders affects learning, memory, perception, and problem solving)Chest PainDepressionRotator Cuff Syndrome (a spectrum of conditions affecting the rotator cuff tendons of the shoulder)Gastrointestinal Disorder (functional problems of gastrointestinal tract)Dyspnoea (difficult or laboured respiration)
Palpitations (feelings or sensations that your heart is pounding or racing)Aspartate Aminotransferase IncreasedHypersexualityDiarrhoeaAcute Myocardial Infarction (acute heart attack)Drug Exposure During PregnancyScarAnxiety
Nausea (feeling of having an urge to vomit)Liver Disorder (liver diseases)Liver Disorder (liver diseases)Muscle Spasms (muscle contraction)AnxietyCardiac DisorderDry SkinFatigue (feeling of tiredness)
Malaise (a feeling of general discomfort or uneasiness)Malaise (a feeling of general discomfort or uneasiness)Hyperphagia (an abnormal appetite for food)VomitingTricuspid Valve Incompetence (inefficient heart valve)Coarctation Of The Aorta (narrowing of the part of aorta)Attention Deficit/hyperactivity DisorderHeadache (pain in head)
Condition AggravatedDecreased Appetite (decreased appetite occurs when you have a reduced desire to eat)Impulse-control DisorderDepressionWeight IncreasedAortic Stenosis (obstruction to the outflow of blood from the left ventricle into the aorta)Sleep DisorderDepression
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)Headache (pain in head)Psychotic DisorderDyspnoea (difficult or laboured respiration)Tachyarrhythmia (disturbance of the heart rhythm in which the heart rate is abnormally increased)Persistent Foetal Circulation (baby's blood does not need to pass by the lungs)Arthralgia (joint pain)Dizziness
VomitingNeutrophil Count Decreased (less than normal number of neutrophil a type of blood cell)Pathological GamblingAsthmaArteriospasm Coronary (spasm of the large- or medium-sized coronary arteries)Gastrooesophageal Reflux Disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)Visual Acuity Reduced (reduced clearness of vision)Anaemia (lack of blood)
Pruritus (severe itching of the skin)DiarrhoeaMajor Depression (a mood state that goes well beyond temporarily feeling sad or blue. it is a serious medical illness that affects one's thoughts, feelings)Abdominal PainNausea (feeling of having an urge to vomit)VertigoColitis Ulcerative (inflammation of colon with ulcer)Vomiting

Most common side effects by gender * :

Nausea (feeling of having an urge to vomit)Fatigue (feeling of tiredness)
Dyspnoea (difficult or laboured respiration)Dyspnoea (difficult or laboured respiration)
Chest PainDepression
Fatigue (feeling of tiredness)Nausea (feeling of having an urge to vomit)
Headache (pain in head)Chest Pain
DizzinessDrug Ineffective
DepressionHeadache (pain in head)
Drug IneffectiveAsthenia (weakness)

Most common side effects by age * :

Hypospadias (an abnormal condition in males in which the urethra opens on the under surface of the penis)CryingHeadache (pain in head)Nausea (feeling of having an urge to vomit)Nausea (feeling of having an urge to vomit)Nausea (feeling of having an urge to vomit)Nausea (feeling of having an urge to vomit)Nausea (feeling of having an urge to vomit)
Maternal Drugs Affecting Foetus (chemical affecting the baby before birth taken by mother)Pyrexia (fever)DepressionPainFatigue (feeling of tiredness)Chest PainFatigue (feeling of tiredness)Dyspnoea (difficult or laboured respiration)
Premature BabyVomitingDyspnoea (difficult or laboured respiration)Pulmonary Embolism (blockage of the main artery of the lung)AnxietyDepressionChest PainDizziness
Foetal Growth Retardation (a baby in the womb fails to grow at the expected rate during the pregnancy)AggressionAnxietyChest PainDepressionAnxietyDepressionFatigue (feeling of tiredness)
Apgar Score LowDrug IneffectiveFatigue (feeling of tiredness)Cholelithiasis (the presence or formation of gallstones in the gallbladder or bile ducts)PainHeadache (pain in head)PainAsthenia (weakness)
Pregnancy NosCoughChest PainCholecystitis Chronic (long lasting infection of gallbladder)Chest PainFatigue (feeling of tiredness)AnxietyChest Pain
Jaundice Neonatal (yellowing of skin in neonate)Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)Nausea (feeling of having an urge to vomit)AnxietyPulmonary Embolism (blockage of the main artery of the lung)PainDyspnoea (difficult or laboured respiration)Fall
Neonatal Apnoeic Attack (episodes where breathing stops temporarily in neonate)Somnolence (a state of near-sleep, a strong desire for sleep)Inflammatory Bowel DiseaseDyspnoea (difficult or laboured respiration)Dyspnoea (difficult or laboured respiration)Drug IneffectiveArthralgia (joint pain)Cough
Pyrexia (fever)Psychomotor Hyperactivity (feelings of extreme restlessness)Drug IneffectiveDepressionHeadache (pain in head)Back PainHeadache (pain in head)Pain
Agitation Neonatal (people with depression, obsessive-compulsive disorder, post viral fatigue syndrome, schizophrenia, bipolar i disorder)Insomnia (sleeplessness)Crohn's Disease (condition that causes inflammation of the gastrointestinal tract)Fatigue (feeling of tiredness)Arthralgia (joint pain)Arthralgia (joint pain)Hypertension (high blood pressure)Myocardial Infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)

* Some reports may have incomplete information.

Browse Claritin side effects from A to Z:

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Comments from related studies:

  • From this study (22 minutes ago):

  • Added estradiol taken orally 5.5 weeks ago*, and gingival hyperplasia began 4 weeks ago. All other meds/vits had been ongoing for a long time before that.
    Previously, estradiol was taken vaginally and is "non-systemic", therefore.


  • From this study (6 days ago):

  • L4/L5 fusion 7/13
    Interferon alpha injections and riboviran and sovaldi pills for HepC 8-2014 to 10-2014. HepC free since treatment


  • From this study (2 weeks ago):

  • He has taken Claritin for about two months now. He can hardly eat without having stomach pain and nausea. I'm wondering if its from taking Claritin for so long. I notice when I take him off for a few days, he gets a little better but when I give it to him, he starts hurting the next day.


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  • Living with chronic pain while battling with psychological disorders. (1 response)
    I have had back problems since 2004. I have been on pain management since 2007. A year ago I was diagnosed with Fibromyalgia. Not only does fibromyalgia cause deep wide spread pain, it also makes me feel lethargic, fluish, and greatly effects my daily life. I also have some psychological conditions as well. Mostly due to a traumatic event experienced as a child.
  • Oxybutynin chloride and chest pain
    A urologist prescribed Vesicare (and Estrace cream) early in 2013 for urge incontinance. When hospitalized for cellulitis (never had it before) in May (2013), I took lots of I-V Clindamycin. The hospital had Ditropan on their formulary, and the urologist switched to it (it was cheaper)--and I continued taking Oxybutynin throughout the summer (2013).

    Before 2013, I had had rare episodes of chest pain (not proven angina) no more than once a year. While on Vesicare and Dipropan, the frequency of chest pain increased to once a month, then once a week, then twice a week, then every other day (by late summer). In July I had a treadmill-EKG (with radioisotope) in USA and my family-practice-physician said it was normal and that my chest pain is NOT heart-related. He took me off Indocin and I have since quit taking Meloxicam and aspirin (no NSAIDs now). I returned to where I live overseas in early August and continued to have chest pain with increasing frequency. In the city where I live, it is too hot in the summer, and too cold in the winter. I saw an American doctor (overseas) in mid-August and my heart rate was irregular (I've never been told THAT before). My blood pressure is usually perfect, but this time my diastolic BP was the lowest it's ever been (about 50). My EKG was said to be normal (except slow rate). My normal pulse is about 60. The doctor said the low diastolic blood pressure was my body's way of helping me "beat the heat," and she suggested I lower the dosage of Oxybutynin from 15 mg daily to 10 mg daily--at least until the summer heat abated. [She was concerned about possible synergistic effect of anti-histamine (Claritin) and anti-cholinergic (Oxybutynin).] Having no return of urologic symptoms (which were severe a few months ago), I have since lowered the dosage of Oxybutynin from 10 mg daily to 5 mg daily.

    I am 68 (had total thyroidectomy in 1978, 3 C-sections in the early 1980's, and two total knee replacement surgeries in 1998 and 2007). I had elevated anti-TPO in 2012 and a new dx of auto-immune thyroiditis early in 2013 (but 98% of my thyroid tissue was removed in 1978).

More reviews for: Claritin

On eHealthMe, Claritin (loratadine) is often used for allergies. Find out below the conditions Claritin is used for, how effective it is, and any alternative drugs that you can use to treat those same conditions.

What is Claritin used for and how effective is it:

Other drugs that are used to treat the same conditions:

Studies of common Claritin drug interactions:

Browse Claritin drug interactions with drugs from A to Z:

NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

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DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

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