Fytosid 100 mg Injection (Etoposide) — Chemotherapy for Solid Tumors Fytosid 100 mg Injection (sometimes referenced as Faytoside) is a potent chemotherapy medicine containing etoposide, used in the treatment of several malignancies including small cell lung cancer, testicular cancer, lymphoma, and other solid tumors. Administered by intravenous infusion in hospital settings under oncology supervision, etoposide works by disrupting the cancer cell life cycle and preventing DNA replication, leading to reduced tumor growth. Due to its powerful effects and potential side effects — such as bone marrow suppression, nausea, and hair loss — this therapy requires careful clinical monitoring and regular blood tests during treatment.