I’ve come a bit late to this post (nope, no puns here…), but I hope I’m able to give you some useful feedback.
I have been using penile injections for 20 years - used to be Papaverine until that was withdrawn for use in erectile dysfunction, and now use Caverject (alprostadil). The horror stories that you hear about everlasting erections requiring surgical intervention are all true - but only an issue if the user has either not enough sense, or too much bravado - including the sort that comes in bottles…
It’s all about using the right dose. With me, that’s around 7 microgrammes. It comes in 10 microgramme doses, so 2/3 ish of a full syringe. That dose will keep me ‘up and running’ for an hour or so, far surpassing the performance of all but the most gifted.
You find the right dose by experimentation - clearly starting low (5 microgrammes) and moving up. I wouldn’t suggest doing this in a ‘live’ situation with anything other than a well informed partner, because if you’re trying to be Joe Cool while worrying if it’s going to work or not, you’re not going to enjoy it, and neither are they. You can, of course, do your experimentation alone…
You do need to have a sense of humour the first time you stick that needle in, but practice, as ever, makes perfect. You can also ‘nip off to the loo’ and return before it has taken effect, which might be handy for new partners unaware that you have erectile dysfunction, if that is an issue for you.
As you are single, and so more likely to have new partners, you may want to stay away from the alternative ‘pump and ring’ system referred to in a reply above, at the back of MS Matters magazine, the SOMAerect Stf system, as returning to bed in triumph from the loo with a thick rubber band around your willy may take a little explaining. That’s a luxury us married men have over you!
Viagra works, but I also get pounding headaches with it, and the (fairly weird) ‘blue vision’ side effect, so I generally steer clear of the stuff, though it’s easier to have in your jeans pocket than a syringe and hypodermic needle… Cialis also tried, but for some reason didn’t work (perhaps a dosing issue), so junked in favour of known trustworthy methods.
All of the medications and injections have restrictions on frequency of use - the only method that you could go for every day, apart from having a permanent penile implant (it’s true…) would be the pump/ring device, so the sooner you bring your partner up to speed about your disability, the easier your love life will be if frequency is an issue - which means don’t be shy with her, either…
Hope this helps!