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Trastuzumab is used to treat certain type of breast cancer or stomach cancer.

How it works

Trastuzumab belongs to a class of drugs called monoclonal antibodies. It acts on the surface of specific cancer cells and inhibits its growth.

Common side effects

Numbness, Tingling sensation of extremity, Numbness of extremity, Abdominal pain, Acne, Joint pain, Back pain, Bruise, Bleeding, Constipation, Depression, Diarrhoea, Difficulty in urination, Hair loss, Heartburn, Hot flashes, Increased risk of infection, Insomnia, Decreased white blood cell count, Loss of appetite, Nose bleed, Nose pain, Sore throat, Chills, Fever


Expert advice

  • Take extreme care while taking trastuzumab as it can cause heart failure, especially if you have heart disease or if you are also receiving certain other cancer medicines.
  • You may need to undergo biopsy test during trastuzumab treatment to check the effect of trastuzumab.
  • Do not drive or operate machinery as trastuzumab may cause fever or chills.
  • Tell your doctor if you are or planning to become pregnant or are breastfeeding.

Frequently asked questions


Q. Is trastuzumab cytotoxic? 
Yes, Trastuzumab is cytotoxic.
Q. Is trastuzumab a hazardous drug? 
Yes, Trastuzumab is a hazardous drug and is supposed to be administered under medical supervision only.

Content on this page was last updated on 30 September, 2016, by Dr. Varun Gupta (MD Pharmacology)