Fludarabine-phosphate, which comes in the form of an injection, is used to treat “adult patients with B-cell chronic lymphocytic leukemia who have not responded to or whose disease has progressed during treatment with at least one standard alkylating-agent containing regimen”. It is worth noting that the safety and effectiveness of this treatment are yet to be established. Also bear in mind that pregnant women should use Fludarabine-phosphate only in life-threatening situations when safer drugs cannot be used or are ineffective. In fact, female patients should avoid getting pregnant before using this treatment, considering it could harm the fetus. According to rxlist.com, the most common adverse reactions include myelosuppression, fever and chills, infection, and nausea and vomiting. Fludarabine-phosphate may also cause anorexia, fatigue, and weakness.