"Evidence pointing to the effects of monensin emerged in a project investigating the effects of nearly 5,000 drugs and micromolecules on the growth of prostate cancer cells. The project involved most of the drugs on the market today. Researchers found that small amounts of compounds – disulfiram (Antabus), thiram, tricostatin A, and monensin – can prevent the growth of prostate cancer cells without significant effects on the growth of the normal human prostate epithelial cells.
Recently, medical companies have shown great interest in these kinds of projects aiming at finding novel indications for established drugs. Since the dosage and adverse effects of drugs already in use and their combined effects with other drugs are relatively well known, this kind of drug repositioning may result in considerable cost savings."
I think I heard about this project, but I guess I didn't pay much attention to it until now...I think it is a neat idea to see if drugs already on the market for other diseases and conditions and might be able to help with PC. Like the above states, they should already have somewhat a clue to side effects and hopefully will reduce research, etc... costs.