Neulasta is a man-made form of a protein that stimulates the growth of white
blood cells in your body. White blood cells help your body fight against
infection.

Neulasta is a prescription medicine used to prevent neutropenia (a lack of
certain white blood cells) that is caused by receiving chemotherapy.

Neulasta helps reduce the chance of infections.





Get emergency medical help if you have **signs of an allergic reaction to
Neulasta:** hives, skin rash, sweating, warmth or tingly feeling; dizziness,
fast heartbeats; wheezing, difficulty breathing; swelling of your face, lips,
tongue, or throat.

Capillary leak syndrome is a rare but serious side effect of pegfilgrastim.
Call your doctor right away if you have signs of this condition, which may
include: decreased urination, tiredness, dizziness or light-headed feeling,
trouble breathing, and sudden swelling, puffiness, or feeling of fullness.

Call your doctor at once if you have:

  * sudden or severe pain in your left upper stomach spreading up to your shoulder;

  * sudden and severe pain in your chest, stomach, or back;

  * severe or ongoing pain anywhere in your body;

  * fever, tiredness;

  * shortness of breath, rapid breathing;

  * easy bruising, unusual bleeding, purple or red spots under your skin;

  * bruising, swelling, or a hard lump where the medicine was injected; or

  * **kidney problems** \- little or no urination, pink or dark urine, swelling in your face or lower legs.

Your cancer treatments may be delayed or permanently discontinued if you have
certain side effects.

Common Neulasta side effects may include:

  * bone pain; or

  * pain in your arms or legs.

This is not a complete list of side effects and others may occur. Call your
doctor for medical advice about side effects. You may report side effects to
FDA at 1-800-FDA-1088.

Neulasta side effects (more detail)