Buy him Nicotinell patch. It is a 24 hour nicotine replacement medication. Your body gets nicotine from the patch, so you are able not to smoke. For the time of treatment you forget about this habit, and stop smoking.
Have you ever tried Stop Smoking Patch? It is very effective. In hard cases doctors prescribe Zyban (Bupropion). Also see here: http://ampills.com/articles/stop-smoking-support-0021.html
Good luck!
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