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

Summary:

Drug interactions are reported among people who take Brethine (terbutaline sulfate) and Zyrtec (cetirizine hydrochloride). Common drug interactions include amnesia among females and anxiety among males.

The phase IV clinical study analyzes what interactions people have when they take Brethine and Zyrtec. It is created by eHealthMe based on reports of 17 people who take the same drugs from the FDA, and is updated regularly.

What is Brethine?

Brethine has active ingredients of terbutaline sulfate. eHealthMe is studying from 480 Brethine users. Check the latest studies of Brethine.

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.

On Jul, 19, 2026

17 people who take Brethine and Zyrtec together, and have interactions are studied.

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

female:

Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Drug dependence
Anger
Dyspnoea (difficult or laboured respiration)
Exacerbation of anxiety (increase in the severity of anxiety)
Sedation
Sinusitis (inflammation of sinus)
Breast pain
Earache (ear pain)
Headache (pain in head)

male:

Anxiety
Brain neoplasm (tumour of brain)
Pneumonia
Pneumonia klebsiella (pneumonia caused by bacteria klebsiella)
Pneumonia staphylococcal (pneumonia staphylococcal infections are usually caused by the organism staphylococcus aureus)
Respiratory distress (difficulty in breathing)
Respiratory syncytial virus infection (viral disease of respiratory system)
Cardiac failure congestive
Chordee (a condition in which the head of the penis curves downward or upward, at the junction of the head)
Feeding disorder neonatal (when newborn refuse to drink milk)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Drug dependence
Anger
Exacerbation of anxiety (increase in the severity of anxiety)
Sedation
Anxiety
Drug effect decreased
Hypersomnia (excessive daytime sleepiness (eds))
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
Aggression

40-49:

Asthenia (weakness)
Asthma
Bronchospasm (spasm of bronchial smooth muscle producing narrowing of the bronchi)
Dyspnoea (difficult or laboured respiration)
Hot flush (sudden feelings of heat)
Hyperlipidaemia (presence of excess lipids in the blood)
Increased appetite
Laryngitis (inflammation of the larynx)
Mood swings (an extreme or rapid change in mood)
Muscle spasms (muscle contraction)

50-59:

n/a

60+:

Dyspnoea (difficult or laboured respiration)
Breast pain
Gynaecomastia (enlargement of the gland tissue of the male breast)
Earache (ear pain)
Headache (pain in head)
Sinusitis (inflammation of sinus)
Anxiety
Chest pain
Drug effect decreased
Respiratory disorder (respiratory disease)

What are the existing conditions these people have? *

Stress And Anxiety: 2 people, 11.76%
Nausea (feeling of having an urge to vomit): 2 people, 11.76%
Ill-Defined Disorder: 2 people, 11.76%
Blood Disorder: 2 people, 11.76%
Premature Labor: 1 person, 5.88%
Osteoporosis (bones weak and more likely to break): 1 person, 5.88%
Acute Severe Asthma: 1 person, 5.88%

* Approximation only. Some reports may have incomplete information.

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