Does muse or cavaject work for ed in diabetics? or is it equally as useless as levitra, (vardenafil) cialis, and viagra?

May work....: Muse/Caverject (PGE-1) are direct applications of vasodilators toward the cavernous bodies of the penis. While they may work better, there is no guarantee that they will work in your specific case: you haven't described the severity of your DM, nor if you have any other contributing factors (eg: a venous "leak"). Regardless, your insurer may require a trial before covering you for a prosthesis.