Filgrastim is primarily used to increase the number of white blood cells, especially neutrophils, in patients suffering from a deficiency due to chemotherapy, bone marrow transplantation, or certain chronic diseases. This reduces the risk of infection and helps the body better resist microbes. It is an essential part of many treatment protocols.
Filgrastim works by stimulating the bone marrow to produce more white blood cells and release them into the bloodstream, which strengthens the immune system and restores normal blood balance. It may also be used in other conditions, such as chronic neutropenia or after stem cell transplants. It is fast-acting when the dosage prescribed by the doctor is adhered to, with the need for continuous medical follow-up to monitor blood counts and adjust treatment to ensure both effectiveness and safety.