How to take Trastuzumab

Trastuzumab (Trastuzumab) is a prescription drug, and treatment with this drug needs to be carried out under the supervision of a doctor. The initial dose of trastuzumab, alone or in combination with paclitaxel, for the treatment of metastatic breast cancer is 4 mg/kg as an intravenous infusion over 90 minutes, followed by 2 mg/kg as an intravenous infusion over 30 minutes once weekly until disease progression. The initial dose of trastuzumab for the treatment of metastatic gastric cancer is 8 mg/kg as an intravenous infusion over 90 minutes, followed by 6 mg/kg as an intravenous infusion over 30 to 90 minutes every three weeks until disease progression.

In the treatment of adjuvant breast cancer approximately 52 weeks, if combined with paclitaxel, docetaxel, or docetaxel/carboplatin, during the first 12 weeks (paclitaxel or docetaxel) or 18 weeks (docetaxel/carboplatin) of chemotherapy, an initial dose of 4 mg/kg intravenously over 90 minutes, followed by 2 weekly intravenous infusions mg/kg, intravenous infusion over 30 minutes. One week after the last weekly dose of trastuzumab, 6 mg/kg of trastuzumab is administered as an intravenous infusion over 30 to 90 minutes every three weeks. If used as a single agent within three weeks of completing a multimodal anthracycline-based chemotherapy regimen, trastuzumab is administered at an initial dose of 8 mg/kg as an intravenous infusion over 90 minutes, followed by doses of 6 mg/kg as an intravenous infusion over 30 to 90 minutes every three weeks. Extending adjuvant therapy beyond one year is not recommended.

Trastuzumab, a generic drug, is sold in China under the trade name Herceptin and has entered the scope of Class B medical insurance, with a price of around RMB 6,000. The original trastuzumab drug has also been launched overseas. The ingredients of domestic and foreign original drugs are basically the same. For specific prices and drug details, you can consult a medical consultant. Currently, there are no generic trastuzumab drugs on the market.