Zyrtec Off Label Use Side Effect Reports


The following Zyrtec Off Label Use side effect reports were submitted by healthcare professionals and consumers.

This information will help you understand how side effects, such as Off Label Use, can occur, and what you can do about them.

A side effect could appear soon after you start Zyrtec or it might take time to develop.


Ketoacidosis, Anxiety, Off Label Use, Somnolence

This Off Label Use side effect was reported by a consumer or non-health professional from RU. A 4-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Zyrtec (dosage: NA), which was started on Feb 26, 2014. Concurrently used drugs: NA. When starting to take Zyrtec the consumer reported the following symptoms:
  • Ketoacidosis
  • Anxiety
  • Off Label Use
  • Somnolence
The patient was hospitalized. These side effects may potentially be related to Zyrtec.
Blood Pressure Increased, Headache, Off Label Use

This Off Label Use Zyrtec Ir side effect was reported by a consumer or non-health professional from US on Nov 27, 2013. A Female , 78 years of age, weighting 133.0 lb, was diagnosed with and was treated with Zyrtec Ir. The patient presented the following health conditions:
  • Blood Pressure Increased
  • Headache
  • Off Label Use
. Zyrtec Ir dosage: NA. Additional drugs used at the same time: NA.
Depression, Adverse Event, Off Label Use, Underdose, Somnolence

This is a Zyrtec Ir 10mg Tablet side effect report of a 80-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: urticaria, who was treated with Zyrtec Ir 10mg Tablet (dosage:Dosage: Half A Tablet, start time: NS), combined with: NA., and developed a serious reaction and a Off Label Use side effect. The patient presented with:
  • Depression
  • Adverse Event
  • Off Label Use
  • Underdose
  • Somnolence
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Zyrtec Ir 10mg Tablet treatment in female patients suffering from urticaria, resulting in Off Label Use.
Blood Pressure Increased, Off Label Use

A 70-year-old female patient (weight: NA) from US with the following symptoms: dermatitis contact started Zyrtec Liquid Gels 10 Mg treatment (dosage: 1 Df, At Night,) on Apr 04, 2013. Soon after starting Zyrtec Liquid Gels 10 Mg treatment, the consumer experienced several side effects, including:
  • Blood Pressure Increased
  • Off Label Use
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Zyrtec Liquid Gels 10 Mg side effects, such as Off Label Use.
Off Label Use

A patient from US was prescribed and started Zyrtec Liquid Gels 10 Mg on Sep 17, 2013. Patient felt the following Zyrtec side effects: off label use Additional patient health information: male , 78 years of age, weighting 183.0 lb, The consumer reported the following symptoms: was diagnosed with and. Zyrtec Liquid Gels 10 Mg dosage: 1 Df, Weekends Only,. Concurrently used drugs: NA.
Feeling Abnormal, Off Label Use

This report suggests a potential Zyrtec Liquid Gels 10 Mg Off Label Use side effect(s) that can have serious consequences. A 70-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): eczema,rheumatoid arthritis and used Zyrtec Liquid Gels 10 Mg (dosage: 1 Df, Once,) starting Jan 31, 2013. Soon after starting Zyrtec Liquid Gels 10 Mg the patient began experiencing various side effects, including:
  • Feeling Abnormal
  • Off Label Use
Drugs used concurrently:
  • Plaquenil (1 Df,)
Although Zyrtec Liquid Gels 10 Mg demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Off Label Use, may still occur.
Initial Insomnia, Incorrect Dose Administered, Off Label Use

An adverse event was reported by a consumer or non-health professional on Sep 17, 2013 by a Female taking Zyrtec Liquid Gels 10 Mg (dosage: 2 Df, Once At Night,) was diagnosed with and. Location: US , 81 years of age, weighting 122.0 lb, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Zyrtec side effects: initial insomnia, incorrect dose administered, off label use. Additional medications/treatments:
Diarrhoea, Off Label Use

This Off Label Use problem was reported by a consumer or non-health professional from US. A 81-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): urticaria.On Aug 02, 2012 a consumer started treatment with Zyrtec Liquid Gels 10 Mg (dosage: 1 Df, Once,). The following drugs/medications were being taken at the same time:
  • Vitamin D 5000 Mg (1x Daily)
  • Multivitamin 3500 Mg (1x Daily)
  • Fish Oil 1000 Mg (1x Daily)
  • Paxil (Unk)
When commencing Zyrtec Liquid Gels 10 Mg, the patient experienced the following unwanted symptoms /side effects:
  • Diarrhoea
  • Off Label Use
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Off Label Use, may become evident only after a product is in use by the general population.
Fungal Skin Infection, Eczema, Dyspnoea, Therapeutic Response Increased, Off Label Use, Feeling Abnormal, Agitation

This is a Zyrtec Ir side effect report of a 57-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: eczema,multiple allergies,asthma,rhinitis allergic and was treated with Zyrtec Ir (dosage: NA) starting 201003. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Fungal Skin Infection
  • Eczema
  • Dyspnoea
  • Therapeutic Response Increased
  • Off Label Use
  • Feeling Abnormal
  • Agitation
The patient was hospitalized. This opens a possibility that Zyrtec Ir could cause Off Label Use and that some female patients may be more susceptible.
Presyncope, Visual Impairment, Heart Rate Increased, Off Label Use, Dizziness

This Off Label Use side effect was reported by a consumer or non-health professional from US on May 14, 2013. A patient from US , 14 years of age, weighting 130.0 lb, was diagnosed with and was treated with Zyrtec-d. Directly after treatment started, patient experienced the unwanted or unexpected Zyrtec side effects: presyncope, visual impairment, heart rate increased, off label use, dizziness. Zyrtec-d dosage: NA. These side effects may potentially be related to Zyrtec-d.
Pain In Extremity, Off Label Use

This Off Label Use side effect was reported by a consumer or non-health professional from PL. A 8-year-old patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Zyrtec (dosage: NA), which was started on Mar 17, 2013. Concurrently used drugs: NA. When starting to take Zyrtec the consumer reported the following symptoms:
  • Pain In Extremity
  • Off Label Use
These side effects may potentially be related to Zyrtec.
Intraocular Pressure Increased, Withdrawal Syndrome, Palpitations, Dyspnoea, Neuralgia, Tinnitus, Pruritus, Off Label Use

This Off Label Use Zyrtec Ir side effect was reported by a consumer or non-health professional from US on May 15, 2013. A Female , 55 years of age, weighting 115.0 lb, was treated with Zyrtec Ir. The patient presented the following health conditions:
  • Intraocular Pressure Increased
  • Withdrawal Syndrome
  • Palpitations
  • Dyspnoea
  • Neuralgia
  • Tinnitus
  • Pruritus
  • Off Label Use
. Zyrtec Ir dosage: NA. Additional drugs used at the same time: NA.
Glaucoma, Off Label Use

This is a Zyrtec Ir side effect report of a 50-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: food allergy,seasonal allergy,headache, who was treated with Zyrtec Ir (dosage:NA, start time: NS), combined with: NA., and developed a serious reaction and a Off Label Use side effect. The patient presented with:
  • Glaucoma
  • Off Label Use
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Zyrtec Ir treatment in female patients suffering from food allergy,seasonal allergy,headache, resulting in Off Label Use.
Ageusia, Anosmia, Off Label Use

A 71-year-old female patient (weight: NA) from US with the following symptoms: NA started Zyrtec Ir treatment (dosage: NA) on Feb 01, 2012. Soon after starting Zyrtec Ir treatment, the consumer experienced several side effects, including:
  • Ageusia
  • Anosmia
  • Off Label Use
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Zyrtec Ir side effects, such as Off Label Use.
Cholesteatoma, Off Label Use

A female patient from US was prescribed and started Zyrtec Ir on Feb 12, 2013. After Zyrtec was administered, patient encountered several Zyrtec side effects: cholesteatoma, off label use Additional patient health information: Female , 45 years of age, weighting 130.0 lb, The consumer reported the following symptoms: . Zyrtec Ir dosage: NA. Concurrently used drugs: NA.
Dysarthria, Amnesia, Abnormal Behaviour, Dizziness, Headache, Off Label Use

This report suggests a potential Zyrtec Off Label Use side effect(s) that can have serious consequences. A 11-year-old patient from CH (weight:NA) was diagnosed with the following health condition(s): NA and used Zyrtec (dosage: 5 Mg Qd, Half Tablet) starting Oct 06, 2012. Soon after starting Zyrtec the patient began experiencing various side effects, including:
  • Dysarthria
  • Amnesia
  • Abnormal Behaviour
  • Dizziness
  • Headache
  • Off Label Use
Drugs used concurrently:NA. Although Zyrtec demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Off Label Use, may still occur.
Hallucination, Somnolence, Aggression, Restlessness, Off Label Use

An adverse event was reported by a physician on Mar 25, 2013 by a Female taking Zyrtec (dosage: NA) . Location: JP , child 5. years of age, patient began experiencing various side effects, including: Patient felt the following Zyrtec side effects: hallucination, somnolence, aggression, restlessness, off label use. Additional medications/treatments:
Febrile Convulsion, Streptococcal Infection, Off Label Use

This Off Label Use problem was reported by a pharmacist from JP. A 7.-year-old patient (weight: NA) was diagnosed with the following medical condition(s): NA.On May 17, 2012 a consumer started treatment with Zyrtec (dosage: NA). The following drugs/medications were being taken at the same time: NA. When commencing Zyrtec, the patient experienced the following unwanted symptoms /side effects:
  • Febrile Convulsion
  • Streptococcal Infection
  • Off Label Use
The patient was hospitalized. Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Off Label Use, may become evident only after a product is in use by the general population.
Dyspnoea, Chest Discomfort, Pruritus, Off Label Use

This is a Zyrtec side effect report of a female patient (weight: NA) from US. The patient developed the following symptoms/conditions: NA and was treated with Zyrtec (dosage: NA) starting May 31, 2012. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Dyspnoea
  • Chest Discomfort
  • Pruritus
  • Off Label Use
This opens a possibility that Zyrtec could cause Off Label Use and that some female patients may be more susceptible.
Withdrawal Syndrome, Pruritus, Off Label Use

This Off Label Use side effect was reported by a consumer or non-health professional from US on Oct 04, 2012. A patient from US , 77 years of age, was treated with Zyrtec Ir. Patient felt the following Zyrtec side effects: withdrawal syndrome, pruritus, off label use. Zyrtec Ir dosage: NA. These side effects may potentially be related to Zyrtec Ir.
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DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Zyrtec Off Label Use Causes and Reviews


Normally, your cells grow and die in a controlled way. Cancer cells keep growing without control. Chemotherapy is drug therapy for cancer. It works by killing the cancer cells, stopping them from spreading, or slowing their growth. However, it can also harm healthy cells, which causes side effects.

You may have a lot of side effects, some, or none at all. It depends on the type and amount of chemotherapy you get and how your body reacts. Some common side effects are fatigue, nausea, vomiting, pain, and hair loss. There are ways to prevent or control some side effects. Talk with your health care provider about how to manage them. Healthy cells usually recover after chemotherapy is over, so most side effects gradually go away.

Your treatment plan will depend on the cancer type, the chemotherapy drugs used, the treatment goal, and how your body responds. Chemotherapy may be given alone or with other treatments. You may get treatment every day, every week, or every month. You may have breaks between treatments so that your body has a chance to build new healthy cells. You might take the drugs by mouth, in a shot, as a cream, or intravenously (by IV).

NIH: National Cancer Institute


Zyrtec Off Label Use Reviews

Fri, 21 May 2010

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 risk pancreatitis.

Sat, 05 Nov 2011

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.

Tue, 09 Feb 2010

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?

Wed, 03 Dec 2008
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?
Sat, 13 Aug 2011
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.
Sun, 28 Mar 2010
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 anti anxiety or anti depressants.
Mon, 23 May 2011
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
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

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Top Zyrtec Side Effects

Pruritus (212)
Pain (145)
Fatigue (145)
Dizziness (140)
Somnolence (133)
Urticaria (132)
Dyspnoea (132)
Nausea (116)
Hypersensitivity (114)
Headache (113)
Insomnia (112)
Depression (105)
Feeling Abnormal (105)
Rash (103)
Anxiety (96)
Off Label Use (94)
Convulsion (93)
Product Quality Issue (92)
Condition Aggravated (80)
Abnormal Behaviour (79)
Loss Of Consciousness (43)
Aggression (43)
Overdose (41)
Withdrawal Syndrome (39)
Injury (39)
Pulmonary Embolism (38)
Irritability (36)
Vomiting (36)
Pyrexia (36)
Abdominal Pain Upper (35)
Deep Vein Thrombosis (34)
Hallucination (34)
Fall (34)
Asthma (33)
Diarrhoea (31)
Palpitations (30)
Malaise (30)
Suicidal Ideation (29)
Blood Pressure Increased (28)
Abdominal Pain (28)
Disturbance In Attention (27)
Cough (27)
Pain In Extremity (27)
Contusion (26)
Dry Mouth (26)
Chest Discomfort (26)
Anger (25)
Cholecystitis Chronic (25)
Weight Increased (25)
Back Pain (24)

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