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

Summary:

Drug interactions are reported among people who take Zyrtec (cetirizine hydrochloride) and Allium (garlic). Common drug interactions include fatigue among females and contusion among males.

The phase IV clinical study analyzes what interactions people have when they take Zyrtec and Allium. It is created by eHealthMe based on reports of 14 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 Allium?

Allium has active ingredients of garlic. eHealthMe is studying from 131 Allium users. Check the latest studies of Allium.

On Jul, 17, 2026

14 people who take Zyrtec and Allium together, and have interactions are studied.

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

female:

Fatigue (feeling of tiredness)
Exostosis (formation of new bone on the surface of a bone)
Hypertonic bladder (bladder-storage function that causes a sudden urge to urinate)
Leukopenia (less number of white blood cells in blood)
Uterine polyp (a mass in the inner lining of the uterus)
Anxiety
Asthma
Blood pressure decreased
Epistaxis (bleed from the nose)
Food allergy

male:

Contusion (a type of hematoma of tissue in which capillaries)
Face injury
Breath sounds
Cardiac murmur (an heart sound in valve abnormality)
Cardiomegaly (increased size of heart than normal)
Dilatation ventricular
Disease progression
Dyspnoea paroxysmal nocturnal (respiratory distress that awakens patients from sleep)
Haemorrhage subcutaneous (bleeding from skin)
Head discomfort

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Anxiety
Epistaxis (bleed from the nose)
Fatigue (feeling of tiredness)
Headache (pain in head)
Insomnia (sleeplessness)
Nasal septum deviation (deviated nasal septum)
Nausea (feeling of having an urge to vomit)
Sinus congestion (blockage of sinus)
Sneezing
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)

40-49:

Asthma
Blood pressure decreased
Respiration (transport of oxygen from the outside air to the cells within tissues)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Somnolence (a state of near-sleep, a strong desire for sleep)
Weight increased

50-59:

n/a

60+:

Exostosis (formation of new bone on the surface of a bone)
Fatigue (feeling of tiredness)
Skin atrophy (wasting of skin)
Activated partial thromboplastin time prolonged
Aortic valve incompetence
Aortic valve sclerosis (narrowing of the aortic valve)
Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
Blood urea increased
Breath sounds
Cardiac murmur (an heart sound in valve abnormality)

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 9 people, 64.29%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 7 people, 50.00%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 2 people, 14.29%
Prostate Cancer Metastatic: 1 person, 7.14%
Immunodeficiency Common Variable: 1 person, 7.14%
Fibromyalgia (a long-term condition which causes pain all over the body): 1 person, 7.14%

* Approximation only. Some reports may have incomplete information.

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