I think it took the edge off of some of my cravings, especially for nicotine which I gave up 4 months in after picking up the habit in rehab. It is sometimes used to help people quit smoking, and there has been rumblings that it helps with cravings for any number of addictive substances and behaviors.
It ain't a magic bullet, and for some people it has no effect on cravings whatsoever.
Still, I agree it's worth a try, and has a very mild side effect profile for an antidepressant, as it works on dopamine rather than serotonin or norepinephrine. It also might help relieve some of the depression that many have in early sobriety, myself definitely included.
It's like one of those commercials..."Talk to your doctor about...."