So I was in the Berlin FKK club Artemis this week during my trip to Germany. I took equivalent of about 50-60 mg (since I broke a 100 mg tab in four). Went into the club and had my first girl about an hour after taking the V. No side effects except for a bit of nasal congestion.
Did the act no problem except couldn't come within my 30 minute session. Then I took another probably equivalent of 20-25 mg (according to my estimation of the size of the chunk) about four hours after the first dose. Took another girl at about 45 minutes after this dose. Same thing, did the act but didn't come.
I've never had this problem before. Is not being able to finish or come a known side effect of Viagra?