Welcome aboard, Lainiest! Glad to hear your doc cleared you for this!
If you're paying out of pocket, check out GoodRx.com. You can use their "coupon" at local pharmacies to get a discount on the Nal.
Here are some tips on getting started and some other info on how to proceed:
http://optionssavelives.freeforums.net/ ... hints-tipsThere's a spreadsheet and graph here that you can use to track your progress:
http://optionssavelives.freeforums.net/ ... graph-toolThe side effects generally last for a few days to a couple of weeks. The hints and tips has some info on how to minimize them, though some get no side effects at all. Some do get "Nal-overs" which I suspect are hangovers without the cushion of endorphins to make things easier. Hopefully you won't run into this.