Hi :)
Wow , I don't see many Nal ?'s on here , how bizarre ! There's an aussie site addictiontreatment.com.au . The basic info is relevent for the US but pricing etc won't be. It's been a rather controversial topic in Aust. for a few years as some addicts ended up ODing after taking naltrexone. What it does ,it completely blocks the effects of opiates on the brain so if a user uses , they feel NOTHING.