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Important Safety Information

Who should not take Neulasta®?

Do not take Neulasta® if you have had a serious allergic reaction to pegfilgrastim (Neulasta®) or to filgrastim (Neupogen®).

What should I tell my health care provider before taking Neulasta®? Tell your healthcare provider if you:

  • Have sickle cell trait or sickle cell disease
  • Have had severe skin reactions to acrylic adhesives
  • Are allergic to latex
  • Have any other medical problems
  • Are pregnant or plan to become pregnant
  • Are breastfeeding or plan to breastfeed

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

What are possible serious side effects of Neulasta®?

  • Spleen Rupture. Your spleen may become enlarged and can rupture while taking Neulasta. A ruptured spleen can cause death. Call your doctor right away if you have pain in the left upper stomach area or left shoulder tip area. This pain could mean your spleen is enlarged or ruptured.
  • A serious lung problem called acute respiratory distress syndrome (ARDS). Call your health care provider or get emergency medical help right away if you get any of these symptoms of ARDS: fever, shortness of breath, trouble breathing, or a fast rate of breathing.
  • Serious Allergic Reactions. Get emergency medical help right away if you get any of these symptoms of a serious allergic reaction with Neulasta: shortness of breath, wheezing, dizziness, swelling around the mouth or eyes, fast pulse, sweating, and hives. If you have an allergic reaction during the delivery of Neulasta, remove the On-body Injector for Neulasta by grabbing the edge of the adhesive pad and peeling off the On-body Injector for Neulasta. Get emergency medical help right away.
  • Sickle Cell Crises. Severe sickle cell crises, and sometimes death, can happen in people with sickle cell trait or disease who receive filgrastim, a medicine similar to Neulasta.

The most common side effect of Neulasta is pain in the bones and in your arms and legs.

Tell your healthcare provider if you have any side effect that bothers you or that does not go away. These are not all the possible side effects of Neulasta. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

For more information about Neulasta, talk with your healthcare provider or pharmacist; go to, or call 1-844-696-3852 (1-844-MYNEULASTA).

Please see the Neulasta Patient Information for additional information.


Neulasta® (pegfilgrastim) is a prescription medication used to help reduce the chance of infection due to a low white blood cell count, in people with certain types of cancer (non-myeloid), who receive anti-cancer medicines (chemotherapy) that can cause fever and low blood cell count.

It is not known if Neulasta is safe and effective in children.

Real Patient Stories

Connecting with other patients with cancer can provide hope and emotional support to cope with chemotherapy treatment. Share in the experiences of real patients who faced the risk of infection during their strong chemotherapy. Your results may vary.

Patient Stories - Carol


Carol’s career in healthcare started as a nurse in cancer research. Today she is a development director helping to raise money for a large non-profit healthcare provider. When Carol was diagnosed with non-Hodgkin's lymphoma, she was told she needed aggressive treatment with strong chemotherapy to treat her large tumor. WATCH VIDEO

Patient Stories - Julie


Julie is a professional singer based in Los Angeles. Julie's career has included doing background vocal work with A-list artists. After she felt a lump in her breast, Julie had a biopsy, which revealed that she had Stage II breast cancer. WATCH VIDEO

Patient Stories - Andre


Meet Andre. Andre’s disease inspired him to pursue a future very different from his past.

My oncologist and I decided to proceed with chemotherapy to treat my non-Hodgkin's lymphoma. My oncologist told me strong chemotherapy could cause my white blood cell count to crash, which could lead to an infection. I took Neulasta® after each cycle of strong chemo. Neulasta® helped reduce my risk of infection by boosting my white blood cell count.

I believe that being fit helped me through chemo. I was a professional volleyball player, and I'm still an active athlete. I try to be as healthy as possible and take good care of my body. As much as I love sports and being active, my experience with cancer has inspired me to pursue a career in research. I hope I can help further the science that helped me through my cancer treatment.

Patient Stories - Christine


Christine found that her love of exercise helped her through an intense cancer treatment plan.

I've always been a busy person. At the time of my breast cancer diagnosis, I was a mom of young kids, and I was also running my own graphic design business. When I received my diagnosis, I knew I had to be ready for what was ahead. My treatment plan was intense—it included several lumpectomies and a mastectomy, followed by nine rounds of strong chemo.

In hindsight, I wish I had started taking Neulasta® from the start of my chemotherapy treatment. I found out that because my kind of chemotherapy was strong, my white blood cell count could drop, which could lead to infection. Even though my husband works at Amgen, the manufacturer of Neulasta®, my doctor first told me about Neulasta® and prescribed it to me to help build up my white blood cell count.

Getting through chemotherapy took the support of my family and friends. My love of exercise also helped me get through my chemo. After my treatment wrapped up, I continued to exercise. Now, when my workouts are tough, I think back to my time during chemotherapy and say, "If I can do that, I can conquer anything!"


Neulasta® was proven to help reduce the risk of infection


Help to limit your out-of-pocket cost of Neulasta® based on eligibility