Is there a natural cure for erectile disfunction?  I tried viagra a few days ago and it didn't work, maybe the dose was too low, I was expecting an erection and nothing happened, I thought I heard it takes about an hour to take effect, after a couple hours it still didn't work.  My doctor is a vegan and she said changing my diet to a vegan diet would fix this problem, I saw the same thing mentioned in forks over knives.  I would like to switch to a vegan diet it's a struggle for me, I'm not there yet and I think it will take a while.  So are there specific foods any of you know of that would help?  I guess any that would increase blood flow would help.