LUPRON question

My father was diagosed with bladder cancer in 2000, they ended up removing his bladder and his prostate a few years ago, he has been doing well and has been getting the Lupron shot for some time now- Last month he got a shot and didnt get his usual hot flashes then he started getting back pain and nausea. Now about a month later he cant get out of bed (nausea & hip pain) He started throwing up blood so he went to the doctor and was just told that he may have cancer in his hip and possibly his liver. Has anybody ever heard of getting a bad batch of Lupron or anything like that? Any other ideas?