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perjeta side effects

Author

Daniel Johnston

Updated on June 25, 2026

The most common side effects of PERJETA when given with Herceptin and docetaxel for treatment of breast cancer that has spread to other parts of the body (metastatic) are diarrhea, hair loss, low levels of white blood cells with or without fever, nausea, feeling tired, rash, and damage to the nerves (numbness, tingling

Is Perjeta considered chemotherapy?

Perjeta™ is an anti-cancer (“antineoplastic” or “cytotoxic”) chemotherapy drug. This medication is classified as an “antineoplastic agent and a monoclonal antibody”.

How long can you stay on Herceptin and Perjeta?

Bottom Line. For the treatment of HER2+ early breast cancer, Perjeta treatment is usually continued for one year (up to 18 cycles) along with Herceptin treatment. These medications are given in the clinic on the same day. You will receive these medicines through your vein by an intravenous (IV) infusion.

Is Perjeta better than Herceptin?

Herceptin Plus Perjeta Slightly Better for High-Risk, HER2-Positive Disease Than Herceptin Alone. Adding Perjeta to Herceptin and chemotherapy after surgery to treat early-stage, HER2-positive breast cancer slightly improves survival; women diagnosed with high-risk, HER2-positive, early-stage disease got more benefits.

Does Perjeta make you tired?

Some side effects may occur during the injection. Tell your caregiver right away if you feel weak, tired, or nauseated, or if you have a fast heartbeat, headache, fever, chills, muscle pain, or an unusual taste in your mouth.

How long does Perjeta stay in body?

Based on a population PK analysis of 481 patients, the median clearance (CL) of pertuzumab was 0.24 L/day and the median half-life was 18 days.

Does Perjeta suppress the immune system?

By blocking the signals, Perjeta can slow or stop the growth of the breast cancer. Perjeta and Herceptin are examples of immune targeted therapy. In addition to blocking HER2 receptors, Perjeta can also help fight breast cancer by alerting the immune system to destroy cancer cells onto which it is attached.

How effective is Perjeta?

94.8% of women treated with Perjeta, Herceptin, and chemotherapy were alive after 6 years. 93.9% of women treated with Herceptin and chemotherapy were alive after 6 years.

Will hair grow back while on Herceptin?

Your hair may thin but you’re unlikely to lose all your hair. This usually starts after your first or second cycle of treatment. It is almost always temporary and your hair will grow back when you finish your treatment.

Can you take Herceptin for life?

Treatment with Herceptin generally lasts for 1 year unless side effects become unmanageable. Herceptin is only given as an intravenous (IV) infusion. * There are 3 ways Herceptin can be used: As part of a treatment course including the chemotherapy drugs doxorubicin, cyclophosphamide, and either paclitaxel or docetaxel

Will I lose my hair with Perjeta?

Hair thinning or hair loss

Pertuzumab and trastuzumab do not usually cause people to lose their hair. Any hair loss caused by chemotherapy should be temporary and in most cases your hair will begin to grow back once your chemotherapy has ended.

Does Herceptin Perjeta cause neuropathy?

The most commonly reported adverse events that have occurred in patients on pertuzumab include diarrhea, alopecia, neutropenia, nausea, fatigue, rash, and peripheral neuropathy (Table 1).

Is Herceptin and Perjeta considered chemotherapy?

Official Answer. Perjeta (generic name: pertuzumab) is considered a targeted cancer therapy, which is different from chemotherapy.

Do Herceptin side effects get worse?

Serious side effects include worsening of neutropenia (low white blood cell count) caused by chemotherapy. Like Herceptin, less common but more severe side effects of Kanjinti include weakening of the heart muscle and other heart problems. Ogivri can also be used to treat metastatic, HER2-positive stomach cancer.

Does Perjeta cause joint pain?

Some people being treated with Perjeta experience side effects such as muscle or joint pain, chills, and rash that should be immediately brought to the attention of the healthcare provider administering treatment.

Does Perjeta cause neuropathy?

Perjeta (chemical name: pertuzumab), Kadcyla (chemical name: T-DM1 or ado-trastuzumab emtansine), and Ogivri (chemical name: trastuzumab-dkst), targeted therapies, can also cause neuropathy.

Does Herceptin and Perjeta cause muscle pain?

Back and muscle pain

Taking Herceptin may cause pain in the muscles or back.