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

Summary:

Drug interactions are reported among people who take Zyrtec (cetirizine hydrochloride) and Halcion (triazolam). Common drug interactions include death among females and nausea among males.

The phase IV clinical study analyzes what interactions people have when they take Zyrtec and Halcion. It is created by eHealthMe based on reports of 51 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 Halcion?

Halcion has active ingredients of triazolam. It is often used in insomnia. eHealthMe is studying from 8,268 Halcion users. Check the latest studies of Halcion.

On Jul, 06, 2026

51 people who take Zyrtec and Halcion together, and have interactions are studied.

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

female:

Death
Muscle spasms (muscle contraction)
Back injury
Bipolar disorder (mood disorder)
Blood bilirubin increased
Blood creatinine increased
Blood osmolarity decreased
Bronchial hyperactivity
Bronchitis acute (acute inflammation of the mucous membrane in the bronchial tubes)
Cardiac failure

male:

Nausea (feeling of having an urge to vomit)
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Anorexia (eating disorder characterized by immoderate food restriction and irrational fear of gaining weight)
Anxiety
Aspartate aminotransferase decreased
Bedridden
Blood chloride decreased
Blood lactate dehydrogenase increased
Blood sodium decreased
Bradycardia (abnormally slow heart action)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Asthma
Gastroenteritis (inflammation of stomach and intestine)
Herpes zoster
Influenza
Anaphylactic reaction (serious allergic reaction)
Hypersensitivity
Liver disorder (liver diseases)

30-39:

Anxiety
Depression
Diarrhoea
Fatigue (feeling of tiredness)
Fibromyalgia (a long-term condition which causes pain all over the body)
Headache (pain in head)
Hyperaesthesia
Menometrorrhagia (a condition in which prolonged or excessive uterine bleeding occurs irregularly and more frequently than normal)
Nausea (feeling of having an urge to vomit)
Overdose

40-49:

Asthma
Back injury
Back pain
Cataract (clouding of the lens inside the eye)
Dry eye (lack of adequate tears)
Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
Haemorrhoids (a swollen vein or group of veins in the region of the anus)
Hypertension (high blood pressure)
Lung disorder (lung disease)
Lung infection

50-59:

Chest discomfort
Deafness
Delusional disorder, unspecified type
Depression
Drug dependence
Drug withdrawal syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation)
Dyspepsia (indigestion)
Dysphagia (a condition in which swallowing is difficult or painful)
Dyspnoea (difficult or laboured respiration)
Dyspnoea exertional (breathlessness or shortness of breath)

60+:

Vomiting
Urticaria (rash of round, red welts on the skin that itch intensely)
Pruritus (severe itching of the skin)
Abdominal pain
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Ascites (accumulation of fluid in the abdominal cavity)
Back pain
Blood bilirubin increased
Blood creatinine increased
Blood osmolarity decreased

What are the existing conditions these people have? *

Pain: 5 people, 9.80%
Osteoporosis (bones weak and more likely to break): 5 people, 9.80%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 5 people, 9.80%
Allergic Rhinitis: 5 people, 9.80%
High Blood Pressure: 4 people, 7.84%
The Flu (the flu is caused by an influenza virus): 3 people, 5.88%
Large Intestine Carcinoma (cancer of large intestine): 3 people, 5.88%
Hypersensitivity: 3 people, 5.88%
Herpes Zoster: 3 people, 5.88%
Depression: 3 people, 5.88%

* Approximation only. Some reports may have incomplete information.

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