A carmustine injection is a high-precision medical tool designed to cross the blood-brain barrier, a feat most cancer drugs cannot achieve. Because carmustine 100mg is fat-soluble, it slips through the brain's protective lining to reach malignant cells directly. Once inside, the carmustine injection binds to DNA, effectively stopping brain cancer, the lymphatic system, and marrow-based tumors from replicating. For oncology departments in the UK, keeping a stable supply of carmustine 100mg is a foundational clinical requirement. Safety and Clinical Precautions Patients with lung disease or suppressed bone marrow should not receive this treatment. It can interact with certain anti-seizure medications or live vaccines, potentially reducing efficacy. Common: Nausea, fatigue, or temporary hair loss. Serious: Severe breathing trouble, yellowing of the skin, or extreme bruising. Seek immediate care for these carmustine side effects.