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Zyrtec and Zyrtec

Compare Side Effects

% of total side effects reported by users. DISCLAIMER: ALL DATA PROVIDED AS-IS. Data Source: openfda.gov.
Side EffectZyrtecZyrtec
DRUG INEFFECTIVE4.7% 4.7%
FATIGUE3.2% 3.2%
NAUSEA3.1% 3.1%
HEADACHE2.9% 2.9%
OFF LABEL USE2.6% 2.6%
DYSPNOEA2.4% 2.4%
PAIN2.3% 2.3%
DIZZINESS2.2% 2.2%
PRURITUS2.1% 2.1%
DIARRHOEA2% 2%
SOMNOLENCE2% 2%
PRODUCT USE ISSUE1.8% 1.8%
VOMITING1.7% 1.7%
ANXIETY1.6% 1.6%
INSOMNIA1.6% 1.6%
RASH1.6% 1.6%
MALAISE1.5% 1.5%
URTICARIA1.4% 1.4%
ARTHRALGIA1.4% 1.4%
COUGH1.4% 1.4%
ASTHENIA1.3% 1.3%
FEELING ABNORMAL1.3% 1.3%
DEPRESSION1.3% 1.3%
FALL1.2% 1.2%
PAIN IN EXTREMITY1.2% 1.2%
THERAPEUTIC RESPONSE UNEXPECTED1.2% 1.2%
PRODUCT QUALITY ISSUE1.2% 1.2%
PYREXIA1.2% 1.2%
SINUSITIS1.1% 1.1%
HYPERSENSITIVITY1.1% 1.1%
ASTHMA1% 1%
ABDOMINAL PAIN1% 1%
WEIGHT DECREASED1% 1%
CHEST PAIN1% 1%
PNEUMONIA1% 1%
BACK PAIN1% 1%
WEIGHT INCREASED1% 1%
INCORRECT DOSE ADMINISTERED0.9% 0.9%
HYPERTENSION0.9% 0.9%
ABDOMINAL PAIN UPPER0.9% 0.9%
CONDITION AGGRAVATED0.9% 0.9%
INJECTION SITE PAIN0.8% 0.8%
PARAESTHESIA0.8% 0.8%
DRUG DOSE OMISSION0.8% 0.8%
CONSTIPATION0.8% 0.8%
MUSCLE SPASMS0.8% 0.8%
OEDEMA PERIPHERAL0.7% 0.7%
DECREASED APPETITE0.7% 0.7%
MYALGIA0.7% 0.7%
TREMOR0.7% 0.7%
HYPOAESTHESIA0.7% 0.7%
ERYTHEMA0.7% 0.7%
MIGRAINE0.6% 0.6%
DEHYDRATION0.6% 0.6%
FLUSHING0.6% 0.6%
VISION BLURRED0.6% 0.6%
GAIT DISTURBANCE0.6% 0.6%
HYPERHIDROSIS0.6% 0.6%
ALOPECIA0.6% 0.6%
PULMONARY EMBOLISM0.6% 0.6%
PRODUCT USE IN UNAPPROVED INDICATION0.6% 0.6%
GASTROOESOPHAGEAL REFLUX DISEASE0.6% 0.6%
DRUG HYPERSENSITIVITY0.6% 0.6%
CHEST DISCOMFORT0.6% 0.6%
OVERDOSE0.6% 0.6%
URINARY TRACT INFECTION0.6% 0.6%
BLOOD PRESSURE INCREASED0.6% 0.6%
DRUG INEFFECTIVE FOR UNAPPROVED INDICATION0.6% 0.6%
ABDOMINAL DISCOMFORT0.6% 0.6%
BRONCHITIS0.6% 0.6%
PALPITATIONS0.6% 0.6%
NASOPHARYNGITIS0.6% 0.6%
DYSGEUSIA0.5% 0.5%
WRONG TECHNIQUE IN PRODUCT USAGE PROCESS0.5% 0.5%
CONTUSION0.5% 0.5%
HYPOTENSION0.5% 0.5%
HEART RATE INCREASED0.5% 0.5%
WHEEZING0.5% 0.5%
LOSS OF CONSCIOUSNESS0.5% 0.5%
CHILLS0.5% 0.5%
DYSPEPSIA0.5% 0.5%
INAPPROPRIATE SCHEDULE OF DRUG ADMINISTRATION0.5% 0.5%
CONFUSIONAL STATE0.5% 0.5%
INJURY0.5% 0.5%
MEMORY IMPAIRMENT0.5% 0.5%
DRY MOUTH0.5% 0.5%
ANAEMIA0.5% 0.5%
OROPHARYNGEAL PAIN0.5% 0.5%
BLOOD GLUCOSE INCREASED0.5% 0.5%
DEEP VEIN THROMBOSIS0.5% 0.5%
DYSPHAGIA0.4% 0.4%
PERIPHERAL SWELLING0.4% 0.4%
MUSCULAR WEAKNESS0.4% 0.4%
RHINORRHOEA0.4% 0.4%
ABDOMINAL DISTENSION0.4% 0.4%
EXPIRED PRODUCT ADMINISTERED0.4% 0.4%
INJECTION SITE ERYTHEMA0.4% 0.4%
DRUG ADMINISTERED TO PATIENT OF INAPPROPRIATE AGE0.4% 0.4%
CEREBROVASCULAR ACCIDENT0.4% 0.4%
DRUG EFFECT INCOMPLETE0.4% 0.4%

New treatments are found every day. View current Zyrtec research studies and Zyrtec clinical trials


Top 5 Zyrtec Reported Side Effects

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Top 5 Zyrtec Reported Side Effects

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Patient Forum

Recent Comments and Reports

Bad gastritis or abdominal pain; had to get into tub with hot shower on my belly;never had a worse experience or pain; thought I was going to die; malaise; moderate ear pain

Does Zyrtec inrease blood sugar levels? I have been taking 10m a day for 10 days and have notices symptoms of high blood sugar, when tested it was in the high 100's. Has anyone heard of this side effect?

Have you had him checked for P.A.N.D.A.S which is a syndrome related to strep throat. One major symptom can be sudden onset of Tourette's. ALso can cause OCD, depression, and other psychiatric conditions. My son has it. SOme doctors don't believe in

I have a 12 year old son who took Zyrtec for year-round allergies. He now has tourettes syndrome and westrongly feelthe Zyrtec played a role in this health issue. I started searching the web for info regarding

I have had and am having a bad reaction to Zyrtec. My eyes are inflamed and my throat is sore. Lips are swollen. My tongue is white. I will be forced to go to the Emergency at the hospital.

I have Type 2 Diabetes, when taking my level in the morning I noticed my level was elevated, and the only thing I had ingested was a Zyrtec pill about 2 hours prior? Could the pill be the cause?

I took one dose and experienced a bout of pancreatitis. I suffer from chronic pancreatitis and know what most of my 'triggers' are.....never thought a simple allergy medication would cause such a problem, I think I would rather suffer allergies than

I took Zyrtec for a week and while it does solve my allergy issues, it makes me a raving lunatic. Severe aggression, mood swings, and nightmares are the norm for me n this medicine. I would not recommend it if you are taking any a

Started on Zyrtec on the suggestion of my dermatologist for treatment of hives. Rash that resulted from the Zyrtec a MILLION times worse than the original hives. Had the same reaction to Seldane.

Does anyone know if taking large amounts of Zyrtec and Xyzal cause viral infections in the Sinuses or throat? Thanks Carmalite

Does Zyrtec inrease blood sugar levels? I have been taking 10m a day for 10 days and have notices symptoms of high blood sugar, when tested it was in the high 100's. Has anyone heard of this side effect?

I have a 12 year old son who took Zyrtec for year-round allergies. He now has tourettes syndrome and westrongly feelthe Zyrtec played a role in this health issue. I started searching the web for info regarding

I have had and am having a bad reaction to Zyrtec. My eyes are inflamed and my throat is sore. Lips are swollen. My tongue is white. I will be forced to go to the Emergency at the hospital.

I have Type 2 Diabetes, when taking my level in the morning I noticed my level was elevated, and the only thing I had ingested was a Zyrtec pill about 2 hours prior? Could the pill be the cause?

I took Zyrtec for a week and while it does solve my allergy issues, it makes me a raving lunatic. Severe aggression, mood swings, and nightmares are the norm for me n this medicine. I would not recommend it if you are taking any a

Started on Zyrtec on the suggestion of my dermatologist for treatment of hives. Rash that resulted from the Zyrtec a MILLION times worse than the original hives. Had the same reaction to Seldane.