Another thing I forgot to mention. Switching to Levitra or Cialis may give you better results. Especially for the empty stomach thing, but are much more effective on normal full stomachs than Viagra. They also stay in the system longer. Sometimes a guy will have poor results with one and switch to then see a dramatic improvement. Ask you doctor for some samples of the others and try them. The pump and the injections do work really well in regaining function. Don't forget to try the rings, also....