Prostate surgery 4 years ago. ED issues that kept getting worse. Viagra and others don't work anymore. I made the choice to try trimix. Yesterday got my meds, wife and I agreed to test it last night. We are going on a trip next week and wanted to make sure we had the dosage down. Started at 1 unit. It took less that 5 minutes to get hard. So fast we were rushing to get our showers and start to play. First time to try intercourse in 4 years. I went great! I am sold. I noted my erection went down after about 30 minutes but that wasn't an issue, it was a great test run. Today's question is: when I want to last longer can I go up on dosage?