Hamsyl 3750IU Injection is a chemotherapy drug containing the active constituent Pegaspargase. It is used to treat a type of blood cancer called Acute Lymphoblastic Leukemia (ALL). This is a white blood cell cancer in which the immature white cells start growing out of control, thus preventing the production of functional blood cells. Combined with other chemotherapy drugs, this medication can help increase the chances of remission and long-term survival for people with ALL. It is particularly effective in treating children with ALL, who have a higher remission rate and overall survival when included in their treatment plan.