In the past I have tried combining sildenafil or Levitra with Alprostadil (which alone do zero for me) and intend to try the other PDE5 inhibitors in the future too. Currently I have found about 10mg of Levitra gives me another hour or so from a dose of Alprostadil whereas the sildenafil seemed to do nothing.
I will take this opportunity to share with everybody something I recently found out by complete mistake. As well as Erectly Disfunction I’m unfortunate to also have fairly bad hay fever for which I take Antihistamine tablets, in the case of mine the main ingredient is cetirizine hydrochloride 10mg.
What I found was if I do my dose of Alprostadil within an hour or so of taking the Antihistamines the time my erection lasts double the time, yes double

https://books.google.co.uk/books/about/ ... edir_esc=y
Of course I’m not suggesting anyone else tries this as I can’t vouch for its safety!!