Herceptin and Atarax drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Herceptin (trastuzumab) and Atarax (hydroxyzine hydrochloride). Common drug interactions include abdominal pain upper among females.

The phase IV clinical study analyzes what interactions people have when they take Herceptin and Atarax. It is created by eHealthMe based on reports of 57 people who take the same drugs from the FDA, and is updated regularly.

What is Herceptin?

Herceptin has active ingredients of trastuzumab. It is often used in breast cancer. eHealthMe is studying from 42,205 Herceptin users. Check the latest studies of Herceptin.

What is Atarax?

Atarax has active ingredients of hydroxyzine hydrochloride. It is often used in stress and anxiety. eHealthMe is studying from 23,553 Atarax users. Check the latest studies of Atarax.

On Jul, 10, 2026

57 people who take Herceptin and Atarax together, and have interactions are studied.

What are the common drug interactions of Herceptin and Atarax, by gender? *:

female:

Abdominal pain upper
Headache (pain in head)
Body temperature increased
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)
Cough
Dehydration (dryness resulting from the removal of water)
Diarrhoea
Diplopia (double vision)
Discomfort
Diverticulum (out pouching of a hollow (or a fluid-filled) structure in the body)

male:

n/a

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Alopecia (absence of hair from areas of the body)
Emotional distress
Psychological trauma

30-39:

n/a

40-49:

Photosensitivity reaction
Febrile bone marrow aplasia (bone marrow greatly decreases or stops production of blood cells)
Vertigo
Leukopenia (less number of white blood cells in blood)
Neutrophil percentage decreased
Platelet count decreased
Sepsis syndrome (a clinical condition of blood infection)
Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure)
Chest discomfort
Heat stroke

50-59:

Fistula (an abnormal connection or passageway between two)
Gait disturbance
Headache (pain in head)
Hypophagia (reduced food intake)
Hypotension (abnormally low blood pressure)
Injury
Loose tooth
Malnutrition (a condition that results from eating a diet in which certain nutrients are lacking)
Metastases to bone (cancer spreads to bone)
Metastases to central nervous system (cancer spreads to central nervous system)

60+:

Abdominal pain upper
Nausea (feeling of having an urge to vomit)
Vision blurred
Dyspnoea (difficult or laboured respiration)
Infusion related reaction
Nail disorder (disease of nail)
Neuropathy peripheral (surface nerve damage)
Tachycardia (a heart rate that exceeds the range of 100 beats/min)
Cardiac arrest
Epistaxis (bleed from the nose)

What are the existing conditions these people have? *

Neoplasm Malignant (cancer tumour): 17 people, 29.82%
Itching: 5 people, 8.77%
Breast Cancer Metastatic: 4 people, 7.02%

* Approximation only. Some reports may have incomplete information.

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