erectile dysfunction
"I have used 20  injections of alprostadil.  The erections have been better than I expected.  Most of the time my erection has lasted for 2 to 3 hours and I have been perfectly satisfied and happy with the results.  A few times I had some pain but I have decreased the dose and it works fine now.  I don't like to inject my penis but I must say the gain is worth the pain."