I can personally vouch for Aspire36. I got my sample last week and tried it after a successful trip to the bars. After about 15 mins it really starts to kick in and does exactly what it claims to do. Most of these sexual stimulant supplements I've tried are complete bs but this stuff really does the job.
Just make sure you don't even see an attractive woman within the next 24 hrs or you might find yourself in an akward situation.