I would actually like to see the 20-month quit-smoking success rate for Chantix, i.e. the real success rate - but I don't suppose this is available. It's supposed to be better than the ~2% - 7% for other NRTs, but without any evidence to back that up, that would just be speculation.
Running some numbers: if Chantix is supposed to have caused ~62,000 heart attacks in 2010, and this is one-thirtieth of those on it, that means the total number of recipients = 62,000 x 30 = 1,860,000. If, let's say, 5% eventually succeed, and the number of recipients is constant from year to year, that would be 93,000.
So if 93,000 succeed in quitting smoking per year with Chantix (and we are talking here about a 20-month figure, in other words a genuine one), then does this number compensate for the 60,000+ heart attacks, the dozens of suicides, and the occasional murder? The government's position seems to be that yes, this is an acceptable trade-off.
From my perspective it isn't - since if those patients all received e-cigarettes and Snus (and mentoring) instead, at least 50% would succeed in getting off cigarettes, hardly any would die, and costs would be approximately halved.
But then I am not in charge.