Definition
Thioguanine is a medication primarily used to treat certain types of leukemia, a cancer of the blood. It works by interfering with the growth of cancer cells, slowing their spread in the body. Think of it as a targeted disruptor of the replication process in rapidly dividing cells. It's like throwing a wrench into the gears of a malfunctioning machine. The drug selectively damages cancer cells, allowing healthy cells to function normally. However, this is a powerful medication with significant potential side effects.