Ontruzant™
Active ingredients: Trastuzumab
Pack: Ontruzant 150 mg powder for injection, 1 vial
Consumer medicine information
For more information about CMIs and how to read them, please visit How to read Consumer Medicine Information (CMI).
What this medicine is used for
Ontruzant is indicated for the treatment of HER2-positive early breast cancer following surgery, and in association with chemotherapy and, if applicable, radiotherapy. Ontruzant is indicated for the treatment of HER2-positive locally advanced breast cancer in combination with neoadjuvant chemotherapy followed by adjuvant Ontruzant. Ontruzant is indicated for the treatment of patients with metastatic breast cancer who have tumours that overexpress HER2: a. as monotherapy for the treatment of those patients who have received one or more chemotherapy regimens for their metastatic disease; b. in combination with taxanes for the treatment of those patients who have not received chemotherapy for their metastatic disease; or c. in combination with an aromatase inhibitor for the treatment of post-menopausal patients with hormone-receptor positive metastatic breast cancer. Ontruzant is indicated in combination with cisplatin and either capecitabine or 5-FU for the treatment of patients with HER2-positive advanced adenocarcinoma of the stomach or gastro-oesophageal junction who have not received prior anti-cancer treatment for their metastatic disease.
Source: ARTG
Storage conditions
- Shelf lifetime is 48 Months
- Store at 2 to 8 degrees Celsius
- Do not Freeze; Refrigerate
Source: ARTG
How to use this medicine
Non-composite pack
This medicine contains one component only.
Component
- Injection, powder for
- Intravenous
- White to pale yellow, lyophilised powder.
Source: ARTG
Do I need a prescription?
These medicine packs are available from a pharmacist and requires a prescription. It is Schedule 4: Prescription Only Medicine.
- 1 single-use vial per pack
Source: ARTG
Is this medicine subsidised?
This medicine is not listed on the Pharmaceutical Benefits Scheme (PBS). Talk to your pharmacist about how much it will cost.
Source: PBS
Pregnant or planning a pregnancy?
For the active ingredient: Trastuzumab
You should seek advice from your doctor or pharmacist about taking this medicine. They can help you balance the risks and the benefits of this medicine during pregnancy.
Source: AHT
Reporting side effects
If you experience a side effect from this medicine, tell your doctor or pharmacist. Or report it directly to the TGA (Therapeutic Goods Administration).
You can report side effects to your doctor, or directly at Report an adverse event or safety problem (Opens in new tab)
Source: ARTG
Data sources
- Australian Health Thesaurus (AHT) (Opens in new tab) – Last updated on 3 August 2026
- Australian Medicines Terminology (AMT) (Opens in new tab) – Last updated on 3 August 2026
- Australian Register of Therapeutic Goods (ARTG) (Opens in new tab) – Last updated on 3 August 2026
- Pharmaceutical Benefits Scheme (PBS) (Opens in new tab) – Last updated on 3 August 2026
- Medicines Information Pty Ltd (Opens in new tab) – Last updated on 4 March 2026
Disclaimer
Healthdirect medicines information is not intended for use in an emergency. If you are suffering an acute illness, overdose, or emergency condition, call triple zero (000) and ask for an ambulance.
Reasonable care has been taken to provide accurate information at the time of creation. This information is not intended to substitute medical advice, diagnosis or treatment and should not be exclusively relied on to manage or diagnose a medical condition. Please refer to our terms and conditions (Opens in new tab).
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