Leukeran (generic: chlorambucil) is a prescription medication used to treat chronic lymphocytic leukemia (CLL, a type of cancer of the white blood cells). Leukeran is also approved for the treatment of certain lymphomas. Leukeran is in a group of drugs called alkylating agents which work by affecting DNA replication causing rapidly multiplying cancer cells to die.

This medication comes in tablet form and is usually taken once daily for 3 to 6 weeks.

Common side effects of Leukeran include anemia, nausea, vomiting, and diarrhea.