Definitely after foreplay to maximise use of the strict 30 minutes limit when pumped up with constriction ring(s) holding the erection.

I need to use viagra, a pump and constriction ring for PIV sex following prostate cancer treatment and yes, it does make my cock less sensitive compared to pre- treatment times. It's not a problem though because I do last quite a bit longer than before and my wife has always loved a good hard fuck -...

I also stay hard with a slight loss of hardness so can continue after orgasm.
As others say, be careful not to exceed 30 minutes maximum with ring on.

I'd give a VED combined with viagra a try if you need to. I started with 50mg which wasn't good enough and ended up with 100mg which gives me a decent semi which is not quite good enough for PIV sex - but using the VED in addition to get really hard works perfectly. I've been on this regime successf...

I've been using a pump without a guage for about 5 years and results are great. I've only ever pumped to the very edge of very slight discomfort as I'm petrified of causing damage by going too far, and this does now produce a slightly larger erection than I had before when erections came naturally w...

I think many of us become resistant over time. I started at 50mg a few years ago but now need 100mg to get a semi which I then use a VED on.

I've been married 44 years and my wife has always enjoyed sex. She always has multiple orgasms and is ultra responsive which is a massive turn on for me. I am very lucky this has continued even after menopause and although I now have to use a good slug of lubricant her pussy and clit remain super re...

I still vividly remember masturbating as a teenager one day and as I was about to come I pressed hard with a finger on my perinium. I don't know why I did this, it was just a lucky random move I guess, but I had the most intense, mind blowing orgasm I had ever experienced.