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ONC-ORG

Trastuzumab

Trastuzumab · HER2-Directed Monoclonal Antibody

Indications & Uses

HER2-overexpressing Breast Cancer, metastatic Gastric Cancer, and gastroesophageal junction adenocarcinoma.

Contraindications

Hypersensitivity to active ingredient or any formulation excipients.

Side Effects & Warnings

Cardiomyopathy (decreased left ventricular ejection fraction), infusion reactions, diarrhea, fatigue.

Drug & Dietary Interactions

Caution with strong CYP3A inhibitors or inducers; review concurrent medications.

For educational and informational purposes only. Do not alter medication doses or regimens without consulting your licensed oncology physician or care team.

Patient & Caregiver Support

Ask About This Medication

Connect with an ONC-ORG counselor regarding drug access, copay relief, patient assistance programs, or related clinical trials.