Cancer medicines
Trastuzumab
Trastuzumab
An antibody therapy targeting HER2.
Sources checked · Introductory guide
On this page
How it works
Blocks HER2 signaling. It differs from antibody-drug conjugates T-DM1 and T-DXd.[1]
Where it is used
Used in defined settings of HER2-positive breast and stomach cancers.[1]
Key safety points
Heart function is monitored. Report breathlessness, swelling, palpitations or infusion reactions immediately.[2]
Questions for your care team
- What do my HER2 results mean and when are heart checks scheduled?
Sources and scope
Source documents are in English.
General information based on official public sources. This is not a complete list of uses or side effects. Individual treatment decisions require your care team and current source documents. US-source uses do not establish local approval or reimbursement.