Chantix, anyone? have you tried it?

Yes I searched the previous thread and did not find it speak to my problem. I am not a butthole smoker nor rude wherever I may be. My brother in law brought it up that I should look into it. I obey all smoking rules, everywhere. I also don’t want to do it anymore. My question is specific is regards to chantix, and whatever if may be called in the uk. Thank you.