Common Zyrtec Side Effects


The most commonly reported Zyrtec side effects (click to view or check a box to report):

Pruritus (162)
Dizziness (97)
Pain (96)
Fatigue (92)
Somnolence (84)
Urticaria (83)
Dyspnoea (82)
Nausea (67)
Anxiety (67)
Hypersensitivity (65)
Depression (65)
Headache (64)
Insomnia (62)
Convulsion (56)
Feeling Abnormal (55)
Rash (54)
Abnormal Behaviour (51)
Condition Aggravated (49)
Off Label Use (45)
Product Quality Issue (43)

➢ More



If you or someone in your family has experienced a serious side effect to a health product, you are encouraged to report the experience to your health care professional (e.g. physician, pharmacist). You could also complete a copy of the side effect reporting form or report your side effect to FDA.

Zyrtec Side Effects Reported to FDA



Zyrtec Side Effect Report#9998894
Ketoacidosis, Anxiety, Off Label Use, Somnolence
This is a report of a 4-year-old female patient (weight: NA) from RU, suffering from the following health symptoms/conditions: NA, who was treated with Zyrtec (dosage: NA, start time:
Feb 26, 2014), combined with: NA. and developed a serious reaction and side effect(s): Ketoacidosis, Anxiety, Off Label Use, Somnolence after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Zyrtec treatment in female patients, resulting in Ketoacidosis side effect. The patient was hospitalized.
Zyrtec Side Effect Report#9938664
Subileus, Cytomegalovirus Gastrointestinal Infection
This report suggests a potential Zyrtec Subileus side effect(s) that can have serious consequences. A 67-year-old male patient (weight: NA) from NO was diagnosed with the following symptoms/conditions: pruritus and used Zyrtec (dosage: 1x1) starting
Dec 20, 2010. After starting Zyrtec the patient began experiencing various side effects, including: Subileus, Cytomegalovirus Gastrointestinal InfectionAdditional drugs used concurrently:
  • Afi-d2-forte (Dosage Form: Tablet)
  • Loperamide
  • Remicade
  • Remicade
  • Mesasal
  • Calcigran Forte (Dosage Form: Tablet, Frequency ^1x2^)
  • Nexium (Dosage Form: Tablets, Frequency ^1x2^)
The patient was hospitalized. Although Zyrtec demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Subileus, may still occur.
Zyrtec Side Effect Report#9931773
Deja Vu
This Deja Vu problem was reported by a consumer or non-health professional from US. A 35-year-old male patient (weight: NA) was diagnosed with the following symptoms/conditions: NA. On NS this consumer started treatment with Zyrtec (dosage: NA). The following drugs were being taken at the same time: NA. When using Zyrtec, the patient experienced the following unwanted symptoms/side effects: Deja VuAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Deja Vu, may become evident only after a product is in use by the general population.
Zyrtec Side Effect Report#9906001
Pruritus, Suicidal Ideation, Feeling Abnormal
This Pruritus side effect was reported by a consumer or non-health professional from US. A 24-year-old female patient (weight:NA) experienced the following symptoms/conditions: multiple allergies.The patient was prescribed Zyrtec (drug dosage: NA), which was initiated on NS. Concurrently used drugs: NA..After starting to take Zyrtec the consumer reported adverse symptoms, such as: Pruritus, Suicidal Ideation, Feeling AbnormalThese side effects may potentially be related to Zyrtec.
Zyrtec Side Effect Report#9879863
Eczema, Rash Maculo-papular, Face Oedema, Pruritus
This is a report of a 80-year-old female patient (weight: NA) from PT, suffering from the following health symptoms/conditions: NA, who was treated with Zyrtec (dosage: NA, start time:
May 25, 2013), combined with: NA. and developed a serious reaction and side effect(s): Eczema, Rash Maculo-papular, Face Oedema, Pruritus after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Zyrtec treatment in female patients, resulting in Eczema side effect. The patient was hospitalized.
Zyrtec Side Effect Report#9868926
Arrhythmia
This report suggests a potential Zyrtec Arrhythmia side effect(s) that can have serious consequences. A 30-year-old male patient (weight: NA) from NO was diagnosed with the following symptoms/conditions: NA and used Zyrtec (dosage: NA) starting NS. After starting Zyrtec the patient began experiencing various side effects, including: ArrhythmiaAdditional drugs used concurrently: NA. Although Zyrtec demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Arrhythmia, may still occur.
Zyrtec Side Effect Report#9848939
Pruritus
This Pruritus problem was reported by a consumer or non-health professional from US. A 54-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: arthropod sting. On
Aug 31, 2013 this consumer started treatment with Zyrtec (dosage: Taken By Mouth). The following drugs were being taken at the same time: NA. When using Zyrtec, the patient experienced the following unwanted symptoms/side effects: PruritusAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Pruritus, may become evident only after a product is in use by the general population.
Zyrtec Side Effect Report#9821206
Urticaria, Pruritus, Blood Pressure Decreased, Thinking Abnormal
This Urticaria side effect was reported by a consumer or non-health professional from US. A 44-year-old male patient (weight:NA) experienced the following symptoms/conditions: multiple allergies.The patient was prescribed Zyrtec (drug dosage: NA), which was initiated on
Jan 05, 2008. Concurrently used drugs: NA..After starting to take Zyrtec the consumer reported adverse symptoms, such as: Urticaria, Pruritus, Blood Pressure Decreased, Thinking AbnormalThese side effects may potentially be related to Zyrtec.
Zyrtec Side Effect Report#9817550
Electrocardiogram Qt Prolonged, Transaminases Increased
This is a report of a 16-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: NA, who was treated with Zyrtec (dosage: NA, start time: NS), combined with: NA. and developed a serious reaction and side effect(s): Electrocardiogram Qt Prolonged, Transaminases Increased after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Zyrtec treatment in female patients, resulting in Electrocardiogram Qt Prolonged side effect.
Zyrtec Side Effect Report#9815079
Cerebrovascular Accident, Pulmonary Thrombosis, Extra Dose Administered, Product Blister Packaging Issue
This report suggests a potential Zyrtec Ir Cerebrovascular Accident side effect(s) that can have serious consequences. A 52-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: NA and used Zyrtec Ir (dosage: NA) starting 1999. After starting Zyrtec Ir the patient began experiencing various side effects, including: Cerebrovascular Accident, Pulmonary Thrombosis, Extra Dose Administered, Product Blister Packaging IssueAdditional drugs used concurrently: NA.The patient was hospitalized. Although Zyrtec Ir demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Cerebrovascular Accident, may still occur.
Zyrtec Side Effect Report#9813101
Somnolence, Pruritus, Rash Maculo-papular, Rash, Burning Sensation
This Somnolence problem was reported by a consumer or non-health professional from US. A 59-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: hypersensitivity,asthma. On
Jun 30, 2013 this consumer started treatment with Zyrtec (dosage: NA). The following drugs were being taken at the same time: NA. When using Zyrtec, the patient experienced the following unwanted symptoms/side effects: Somnolence, Pruritus, Rash Maculo-papular, Rash, Burning SensationAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Somnolence, may become evident only after a product is in use by the general population.
Zyrtec Side Effect Report#9805469
Vitiligo
This Vitiligo side effect was reported by a consumer or non-health professional from US. A 37-year-old female patient (weight:NA) experienced the following symptoms/conditions: rhinitis allergic.The patient was prescribed Zyrtec (drug dosage: 1 Tab Once Daily Taken By Mouth), which was initiated on
Nov 15, 2013. Concurrently used drugs: NA..After starting to take Zyrtec the consumer reported adverse symptoms, such as: VitiligoThese side effects may potentially be related to Zyrtec.
Zyrtec Side Effect Report#9789337
Eye Movement Disorder, Tic, Enuresis
This is a report of a 6-year-old male patient (weight: NA) from BE, suffering from the following health symptoms/conditions: NA, who was treated with Zyrtec (dosage: NA, start time:
Oct 05, 2013), combined with: NA. and developed a serious reaction and side effect(s): Eye Movement Disorder, Tic, Enuresis after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Zyrtec treatment in male patients, resulting in Eye Movement Disorder side effect. The patient was hospitalized.
Zyrtec Side Effect Report#9771456
Urinary Tract Infection, Product Packaging Issue
This report suggests a potential Zyrtec Ir 10mg Tablet Urinary Tract Infection side effect(s) that can have serious consequences. A 55-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: NA and used Zyrtec Ir 10mg Tablet (dosage: NA) starting
Dec 12, 2001. After starting Zyrtec Ir 10mg Tablet the patient began experiencing various side effects, including: Urinary Tract Infection, Product Packaging IssueAdditional drugs used concurrently: NA. Although Zyrtec Ir 10mg Tablet demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Urinary Tract Infection, may still occur.
Zyrtec Side Effect Report#9771369
Dyspnoea, Urinary Retention
This Dyspnoea problem was reported by a pharmacist from JP. A 74-year-old male patient (weight: NA) was diagnosed with the following symptoms/conditions: NA. On NS this consumer started treatment with Zyrtec (dosage: NA). The following drugs were being taken at the same time: NA. When using Zyrtec, the patient experienced the following unwanted symptoms/side effects: Dyspnoea, Urinary RetentionThe patient was hospitalized.Although all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Dyspnoea, may become evident only after a product is in use by the general population.
Zyrtec Side Effect Report#9767121
Dysgeusia
This Dysgeusia side effect was reported by a consumer or non-health professional from US. A 74-year-old female patient (weight:NA) experienced the following symptoms/conditions: essential tremor.The patient was prescribed Zyrtec (drug dosage: NA), which was initiated on NS. Concurrently used drugs:
  • Propanol Er
.After starting to take Zyrtec the consumer reported adverse symptoms, such as: DysgeusiaThese side effects may potentially be related to Zyrtec.
Zyrtec Side Effect Report#9765808
Muscle Spasms, Muscle Spasms
This is a report of a 55-year-old male patient (weight: NA) from US, suffering from the following health symptoms/conditions: seasonal allergy, who was treated with Zyrtec (dosage: Once Daily, start time:
Mar 01, 2013), combined with: NA. and developed a serious reaction and side effect(s): Muscle Spasms, Muscle Spasms after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Zyrtec treatment in male patients, resulting in Muscle Spasms side effect.
Zyrtec Side Effect Report#9757304
Myocardial Infarction, Diverticulitis, Angina Pectoris, Product Quality Issue
This report suggests a potential Zyrtec 10mg Ir Tablet Bonus 30+10 Usa Myocardial Infarction side effect(s) that can have serious consequences. A 71-year-old male patient (weight: NA) from US was diagnosed with the following symptoms/conditions: NA and used Zyrtec 10mg Ir Tablet Bonus 30+10 Usa (dosage: NA) starting
Nov 20, 2013. After starting Zyrtec 10mg Ir Tablet Bonus 30+10 Usa the patient began experiencing various side effects, including: Myocardial Infarction, Diverticulitis, Angina Pectoris, Product Quality IssueAdditional drugs used concurrently: NA.The patient was hospitalized. Although Zyrtec 10mg Ir Tablet Bonus 30+10 Usa demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Myocardial Infarction, may still occur.
Zyrtec Side Effect Report#9757303
Rash
This Rash problem was reported by a physician from JP. A 53-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: NA. On
Oct 22, 2013 this consumer started treatment with Zyrtec (dosage: NA). The following drugs were being taken at the same time: NA. When using Zyrtec, the patient experienced the following unwanted symptoms/side effects: RashThe patient was hospitalized.Although all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Rash, may become evident only after a product is in use by the general population.
Zyrtec Side Effect Report#9752064
Suicide Attempt, Overdose, Fatigue
This Suicide Attempt side effect was reported by a physician from DE. A 23-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA.The patient was prescribed Zyrtec (drug dosage: NA), which was initiated on 201312. Concurrently used drugs: NA..After starting to take Zyrtec the consumer reported adverse symptoms, such as: Suicide Attempt, Overdose, FatigueThese side effects may potentially be related to Zyrtec.
Zyrtec Side Effect Report#9730888
Anaphylactic Reaction, Mental Disorder, Lip Dry, Skin Disorder, Chapped Lips, Sweat Gland Disorder, Cough, Urticaria, Rash
This is a report of a 8-year-old male patient (weight: NA) from GB, suffering from the following health symptoms/conditions: urticaria, who was treated with Zyrtec (dosage: NA, start time: 2013), combined with: NA. and developed a serious reaction and side effect(s): Anaphylactic Reaction, Mental Disorder, Lip Dry, Skin Disorder, Chapped Lips, Sweat Gland Disorder, Cough, Urticaria, Rash after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Zyrtec treatment in male patients, resulting in Anaphylactic Reaction side effect.
Zyrtec Side Effect Report#9721474
Myoclonus
This report suggests a potential Zyrtec Myoclonus side effect(s) that can have serious consequences. A 91-year-old female patient (weight: NA) from JP was diagnosed with the following symptoms/conditions: NA and used Zyrtec (dosage: NA) starting NS. After starting Zyrtec the patient began experiencing various side effects, including: MyoclonusAdditional drugs used concurrently: NA. Although Zyrtec demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Myoclonus, may still occur.
Zyrtec Side Effect Report#9715711
Blood Pressure Increased, Headache, Off Label Use
This Blood Pressure Increased problem was reported by a consumer or non-health professional from US. A 78-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: middle ear effusion,ear discomfort,thyroid disorder,gastric disorder. On
Nov 13, 2013 this consumer started treatment with Zyrtec Ir (dosage: NA). The following drugs were being taken at the same time: NA. When using Zyrtec Ir, the patient experienced the following unwanted symptoms/side effects: Blood Pressure Increased, Headache, Off Label UseAlthough all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as Blood Pressure Increased, may become evident only after a product is in use by the general population.
Zyrtec Side Effect Report#9711576
Alopecia, Alopecia
This Alopecia side effect was reported by a consumer or non-health professional from US. A 65-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA.The patient was prescribed Zyrtec-d (drug dosage: 1 Once Daily Taken By Mouth), which was initiated on
Oct 01, 2013. Concurrently used drugs: NA..After starting to take Zyrtec-d the consumer reported adverse symptoms, such as: Alopecia, AlopeciaThese side effects may potentially be related to Zyrtec-d.
Zyrtec Side Effect Report#9701750
Disturbance In Attention, Insomnia, Distractibility, Maternal Exposure During Pregnancy
This is a report of a 32-year-old female patient (weight: NA) from US, suffering from the following health symptoms/conditions: multiple allergies, who was treated with Zyrtec (dosage: 1 Pill Once Daily Taken By Mouth, start time:
Aug 01, 2011), combined with: NA. and developed a serious reaction and side effect(s): Disturbance In Attention, Insomnia, Distractibility, Maternal Exposure During Pregnancy after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Zyrtec treatment in female patients, resulting in Disturbance In Attention side effect.


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The appearance of Zyrtec on this list does not mean that FDA has concluded that the drug has the listed risk. It means that FDA has identified a potential safety issue, but it does not mean that FDA has found a causal relationship between the drug and the listed risk.

What are common Zyrtec Side Effects for Women?

Women Side Effects Reports
Pruritus 123
Pain 88
Fatigue 72
Dizziness 70
Dyspnoea 62
Urticaria 59
Somnolence 58
Nausea 52
Anxiety 48
Hypersensitivity 46

What are common Zyrtec Side Effects for Men?

Men Side Effects Reports
Pruritus 38
Abnormal Behaviour 32
Convulsion 32
Dizziness 27
Aggression 26
Somnolence 26
Urticaria 24
Headache 23
Irritability 23
Depression 21

Track Your Side Effects

Note Your Observations

It is really important to keep track of your health symptoms, right from the time you start a new medicine. You can do it any way you prefer: in a notebook, in a computer file or using our online tool. You should also note down any other medicines you are taking at the same time, because there could be an interaction between these medicines.

Why Your Notes are Important

Your notes could be helpful in several ways:

  • You can use them to remind you of details that may alert your health care professional(s) to a problem
  • You will have a record to refer to in the future, in case you are ever prescribed the same medicine again

  • Log Form

    You can use the following log form to write down important information, like the date and time you experienced a side effect and your symptoms, how strong the symptoms were, and any other medicines you were using.

    Medicine Name and Dosage:
    Side Effects Scale Date & Time Other Medicine(s) or Treatment(s)
    Scale: 1 = very mild to 10 = very bad

    Side effects reports are analyzed to discover potential health product safety signals. Some important reactions may take an extremely long time to develop or occur infrequently. Continued monitoring of adverse reactions is thus essential to maintain a comprehensive safety and effectiveness profile of health products.

    You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

    Zyrtec reports list potential signals of serious risks and new safety information that were identified using the FDA Adverse Event Reporting System (FAERS).
    FAERS is a database that contains information on adverse event and medication errors reports submitted to FDA by healthcare professionals (such as physicians, pharmacists, nurses and others), consumers (such as patients, family members, layers and others) and manufacturers.

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    Zyrtec Safety Alerts, Active Ingredients, Usage Information

    NDC 50580-726
    Type HUMAN OTC DRUG
    Proprietary Name Zyrtec
    Name Cetirizine Hydrochloride
    Dosage Form TABLET, FILM COATED
    Route ORAL
    On market since 20081001
    Labeler McNeil Consumer Healthcare Division of McNeil-PPC, Inc.
    Active Ingredient(s) CETIRIZINE HYDROCHLORIDE
    Strength(s) 10
    Unit(s) mg/1
    Pharma Class

    Zyrtec Dosage, Warnings, Usage.

    Side Effects reported to FDA: 1669

    Zyrtec safety alerts: No

    Reported deaths: 34

    Reported hospitalizations: 352

    Latest Zyrtec clinical trials

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