Filgrastim is a man-made version of a certain natural substance made in your body. It is used to help your body make more white blood cells. White blood cells are important to help you fight off infections. Filgrastim is given to people whose ability to make white blood cells is reduced (for instance, due to chemotherapy, chronic neutropenia, or exposure to large amounts of radiation). It is also used in certain treatment procedures (such as bone marrow/stem cell transplant).
This monograph is about the following filgrastim products: filgrastim, tbo-filgrastim, filgrastim-sndz, and filgrastim-aafi.
How to Use This Medication
Read the Patient Information Leaflet and Instructions for Use if available from your pharmacist before you start using filgrastim and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
Depending on your filgrastim product, this medication is injected under the skin or into a vein. Use as directed by your doctor, usually once a day. The dosage is based on your medical condition, weight, lab tests, and response to treatment.
If you are using this medication at home, learn all preparation and usage instructions from your health care professional and the product package. Take the medication out of the refrigerator at least 30 minutes before you inject it to allow it to reach room temperature. Do not shake the medication. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid.
If you are injecting this drug under the skin, first clean the injection site with rubbing alcohol. Change the injection site each time to lessen injury under the skin. Do not inject filgrastim into skin that is bruised, tender, red, hard, or that has scars or stretch marks.
Learn how to store and discard medical supplies safely.
Use this medication regularly in order to get the most benefit from it. To help you remember, use it at the same time each day.
If you are receiving cancer chemotherapy, you should not use this medication within 24 hours before or 24 hours after chemotherapy. Ask your doctor for specific directions about when to use this medication.