Trastuzumab is designed to bind selectively to an antigen called HER2, which is found in large quantities on the surface of certain cancerous cells where it stimulates their growth. The trastuzumab cost in India may vary depending on the wholesaler/pharmacy you visit.
When trastuzumab binds to human epidermal growth factor receptor 2 it blocks the growth of such cells and causes them to die.
A healthcare practitioner will closely supervise the therapy.