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Herceptin (Trastuzumab) is a prescription drug approved by the U.S. Food and Drug Administration (FDA) to treat metastatic breast cancer in cases where tumors overexpress the HER2 protein and one or more chemotherapy regimens have been tried. It is also used as adjuvant treatment to reduce the chances of recurrence after Show Full Answer

Herceptin (Trastuzumab) is a prescription drug approved by the U.S. Food and Drug Administration (FDA) to treat metastatic breast cancer in cases where tumors overexpress the HER2 protein and one or more chemotherapy regimens have been tried. It is also used as adjuvant treatment to reduce the chances of recurrence after successful treatment for breast cancer.

Key points about Herceptin:
- Mechanism: It is a monoclonal antibody designed to turn off the HER2 gene, reducing the amount of growth factor receptors on cancer cells and slowing tumor growth.
- Administration: Given as an intravenous injection once a week or once every three weeks.
- Side Effects: Common side effects include headache, diarrhea, nausea, and chills. Rare but serious side effects can include heart failure, lung damage, and severe infusion reactions.

For more detailed information, you can visit the [Herceptin page on MyBCTeam](https://www.mybcteam.com/treatments/herceptin).

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