Zyrtec and Carbatrol drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Zyrtec (cetirizine hydrochloride) and Carbatrol (carbamazepine). Common drug interactions include blood cholesterol increased among females and convulsion among males.

The phase IV clinical study analyzes what interactions people have when they take Zyrtec and Carbatrol. It is created by eHealthMe based on reports of 26 people who take the same drugs from the FDA, and is updated regularly.

What is Zyrtec?

Zyrtec has active ingredients of cetirizine hydrochloride. It is often used in allergies. eHealthMe is studying from 114,619 Zyrtec users. Check the latest studies of Zyrtec.

What is Carbatrol?

Carbatrol has active ingredients of carbamazepine. It is often used in epilepsy. eHealthMe is studying from 1,979 Carbatrol users. Check the latest studies of Carbatrol.

On Jul, 05, 2026

26 people who take Zyrtec and Carbatrol together, and have interactions are studied.

What are the common drug interactions of Zyrtec and Carbatrol, by gender? *:

female:

Blood cholesterol increased
Diarrhoea
Bacterial test positive
Fibroma (tumours that are composed of fibrous or connective tissue)
Gastroenteritis viral (inflammation of stomach and intestine caused by virus infection)
Respiratory tract infection
Urine abnormality
Vomiting
White blood cells urine positive
Acne (skin problems that cause pimples)

male:

Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Anorexia (eating disorder characterized by immoderate food restriction and irrational fear of gaining weight)
Blood calcium decreased
Dyspnoea (difficult or laboured respiration)
Haematocrit decreased
Haemoglobin decreased
Helicobacter infection (helicobacter pylori (h. pylori) infects stomach)
Maternal exposure during pregnancy (use of substance during pregnancy)
Oral intake reduced
Pain

What are the common drug interactions of Zyrtec and Carbatrol, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Anorexia (eating disorder characterized by immoderate food restriction and irrational fear of gaining weight)
Asthenia (weakness)
Somnolence (a state of near-sleep, a strong desire for sleep)
Alanine aminotransferase increased
Aspartate aminotransferase increased
Bilirubin conjugated increased
Blood alkaline phosphatase increased
Blood bilirubin increased
Eosinophil percentage increased

10-19:

n/a

20-29:

Abnormal behaviour
Aggression
Asthenia (weakness)
Dyskinesia (abnormality or impairment of voluntary movement)
Gingival bleeding (bleeding gums)
Gingivitis (inflammation of gums)
Hypotension (abnormally low blood pressure)
Ligament rupture (tear in ligament)
Mouth ulceration (mouth ulcers)
Platelet count decreased

30-39:

Blood cholesterol increased
Bacterial test positive
Diarrhoea
Fibroma (tumours that are composed of fibrous or connective tissue)
Gastroenteritis viral (inflammation of stomach and intestine caused by virus infection)
Respiratory tract infection
Urine abnormality
Vomiting
White blood cells urine positive
Acne (skin problems that cause pimples)

40-49:

Contusion (a type of hematoma of tissue in which capillaries)
Nail discolouration (change in nail colour)
Nodule (a growth of abnormal tissue)
Pain
Ankle fracture
Osteoporosis (bones weak and more likely to break)
Stevens-johnson syndrome (an immune-complex-mediated hypersensitivity disorder. it ranges from mild skin and mucous membrane lesions to a severe)

50-59:

Dyspnoea (difficult or laboured respiration)
Productive cough
Impulsive behaviour
Obesity (having too much body fat)
Pain
Pneumonia
Red blood cell count decreased
Type 2 diabetes mellitus
Weight increased
White blood cell count decreased

60+:

n/a

What are the existing conditions these people have? *

Angiomyolipoma (most common benign tumour of the kidney): 6 people, 23.08%
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 3 people, 11.54%
Seizures (abnormal excessive or synchronous neuronal activity in the brain): 2 people, 7.69%
Psoriasis (immune-mediated disease that affects the skin): 2 people, 7.69%
Hypersensitivity: 2 people, 7.69%
Asthma: 2 people, 7.69%

* Approximation only. Some reports may have incomplete information.

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