This report is for all products sharing this active ingredient. For more details, please use our Workbench for research on individual brands like Zyrtec.
The quarterly trend chart illustrates changing levels of adverse events over time. Results from both the FDA Adverse Event Database (FAERS) and adverse events extracted from social media by Druginformer are plotted side-by-side for easy comparison.
The proportion of people completing user reviews who complained about a side effect.
The proportion of social media adverse event complaints for each adverse event type.
The proportion of FAERS (FDA) adverse event complaints for each adverse event type.
Social Media (Online Comments) |
FAERS (Reports Submitted to FDA) |
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Side Effect | On Drug Label |
Overall Alarm |
Reports | % of Reports |
Alarm | Reports | % of Reports |
Alarm |
* DrugInformer calculates alarm using a proprietary algorithm. Alarm should not be taken as an ofiicial signal from the FDA or other regulatory entity.
Druginformer Identified Side Effects: Tremor, Headache, Dizziness, Nausea, Pain, Chills, Vomiting, Loss of consciousness, Anxiety, Visual impairment, Euphoric mood, Dyspnoea, Insomnia, Pyrexia
Posted By Anonymous in askapatient.com on September 3, 2015 @ 12:00 am
“Side Effects: Nausea and dizzy I cant go outside I fant every time I try..can eat cant sleep my nerves system cant stop shaking headache eyes blurry light headed cheats pain shortness of breath vomit...”
Druginformer Identified Side Effects: Abnormal weight gain, Lethargy, Abdominal distension, Depression, Mood altered
Posted By Anonymous in askapatient.com on September 1, 2015 @ 12:00 am
“... when I found this site and read all of the comments. I've been experiencing all of the same symptoms but never contributed them to taking Zyrtec. I've gained a lot of weight, I'm always bloated and ga...”
Druginformer Identified Side Effects: Nasal dryness, Somnolence
Posted By Anonymous in askapatient.com on August 28, 2015 @ 12:00 am
“Side Effects: Dry nose, nasal crusting, blood in nose, mild drowsiness This stuff works well on hay fever, maybe a little too well because I can only take half a pill and I'll be good for a...”
Druginformer Identified Side Effects: Thought withdrawal, Increased appetite, Somnolence
Posted By Anonymous in askapatient.com on August 24, 2015 @ 12:00 am
“... It's like my brain was sleeping. I gave up and slept for 2 hours after a full 8 hours of sleep the night before. I am normally a high energy person so I thought I was losing my mind until I realized...”
Druginformer Identified Side Effects: Lethargy, Depression, Irritability
Posted By Anonymous in askapatient.com on August 15, 2015 @ 12:00 am
“Side Effects: Irritability, severe depression, lethargy. On this for probably 15 years after trying so many others that either didn't do the job of muting the allergies or their side effect...”
Druginformer Identified Side Effects: Sleep disorder, Nightmare, Screaming, Rash, Scratch, Haemorrhage, Seasonal allergy
Posted By Anonymous in askapatient.com on July 29, 2015 @ 12:00 am
“Side Effects: My son was experiencing seasonal allergies and rashes due to moving into a rental that previously had cats and dogs. After many sleepless nights of scratching himself to the point of bl...”
Druginformer Identified Side Effects: Hypersomnia, Pruritus, Mood swings, Anger, Depression, Insomnia
Posted By Anonymous in askapatient.com on July 16, 2015 @ 12:00 am
“... of days ago, and many side effects described were eerily similar to what I've experienced these past couple of years. Bad temper, mood swings, depression, insomnia and sleeping too much were things I ...”
Druginformer Identified Side Effects: Somnolence
Posted By Anonymous in askapatient.com on July 13, 2015 @ 12:00 am
“Side Effects: Drowsiness. Could not stay awake with this medication. Would sleep for 10-12 hours and still feel tired after getting out of bed. I even tried splitting the pill to make 5 mg ...”
Druginformer Identified Side Effects: Sleep disorder, Insomnia, Mood altered
Posted By Anonymous in askapatient.com on July 3, 2015 @ 12:00 am
“... for her outburst. I am still going to have her see a therapist just in case it is so something else. I think the medicine has a lot to do with her outburst though and her lack of sleep ...”
Druginformer Identified Side Effects: Weight increased
Posted By Anonymous in askapatient.com on June 22, 2015 @ 12:00 am
“Side Effects: WEIGHT GAIN!!!! While this worked great for my allergies I have gained 20 pounds with refular daily use for the lasr year. Stopped taking it and am already shedding pounds aft...”
* Warning: The facts and figures contained in these reports are accurate to the best of our capability; however, our metrics are only meant to augment your medical knowledge, and should never be used as the sole basis for selecting a new medication. As with any medical decision, be sure to work with your doctor to ensure the best choices are made for your condition.
* About FAERS: The FDA Adverse Event Reporting System (FAERS) is used by FDA for activities such as looking for new safety concerns that might be related to a marketed product, evaluating a manufacturer's compliance to reporting regulations and responding to outside requests for information. Reporting of adverse events is a voluntary process, and not every report is sent to FDA and entered into FAERS. The FAERS database may contain duplicate reports, the report quality is variable, and many factors may influence reporting (e.g., media attention, length of time a drug is marketed, market share). For these reasons, FAERS case reports cannot be used to calculate incidence or estimates of risk for a particular product or compare risks between products.
User Voices
The following are comments from users that experienced side effects while taking Cetirizine Hydrochloride
Drug Tolerance
“... about 12-16 hours after you take it. (That's why I take it at night before I go to bed.) Also, if you skip a dose, take it ASAP. Otherwise, your body will build up a type of tolerance to it and it wil...”
Source: Zyrtec-D-Allergy-Medicine-review-3a051
View full report on Cetirizine Hydrochloride related drug tolerance
Did the author experience drug tolerance while taking zyrtec?
What is this?Somnolence
“can make some drowsy , other generics may be cheaper
makes me less drowsy than others, helps topical and respiratory allergies, seems safe, can be taken daily if needed, no prescript...”
Source: Cetirizine-Hydrochloride-Generic-Zyrte...
View full report on Cetirizine Hydrochloride related somnolence
Did the author experience somnolence while taking cetirizine hydrochloride?
What is this?Somnolence
“a few side effects: can cause drowsiness , can be higher in price
24 hr relief, helps w/ indoor and outdoor allergies, rx strength but is over the counter pros>
Zyrtec allergy 24 hr...”
Source: Zyrtec-Allergy-Medication-review-598d
View full report on Cetirizine Hydrochloride related somnolence
Did the author experience somnolence while taking zyrtec allergy?
What is this?