PEGSTIM 6 mg Injection (Pegfilgrastim) is a prescription supportive oncology medicine that helps prevent chemotherapy‑induced neutropenia (low white blood cell count) and associated infections. Pegfilgrastim is a long‑acting form of granulocyte colony‑stimulating factor (G‑CSF) that stimulates the bone marrow to produce neutrophils, lowering the chance of fever and infections during or after chemotherapy. Pegstim is usually given as a single subcutaneous injection per chemotherapy cycle, often 24 hours after chemotherapy. Regular monitoring and doctor supervision are required throughout treatment. Available through specialist pharmacies in Pakistan with a valid prescription.