BLEOMYCIN treats some types of cancer. It works by slowing down the growth of cancer cells. It may also be used to prevent and treat the buildup of fluid around the lungs that can be caused by cancer. It works by helping your body create less space around your lungs, so that fluid cannot build up. Get Bleomycin for as low as $17.23, which is 73% off the average retail price of $63.30 for the most common version, by using a GoodRx coupon.