I use viagra (sildenafil) now and then for ed but it doesn't seem to help my erection , still a soft erection that last only a short time . what can help ?

Here are some ...: To maximize the effect of Viagra (sildenafil) is take it at empty stomach and after a full mental and physical rest and recovery. You may adjust its dose to 100 mg under pro-supervision and don't attempt to have sex more than 1-2 times a week. If not working, see urologist for further evaluation and counseling so to decide the potential next step of care - pump? injection, or penile implant....