For those in Europe, a similar medication is sold under the Tabex brand name. The active ingredient seems to be different (cytisine) but the effect is the same: no satisfaction from cigarettes, just the bad smell/taste plus some mild stimulation (at least I felt less sleepy in the first few days quitting with Tabex as opposed to cold turkey). I liked to visualize the effect of this drug as: binding to the same receptors in my brain as nicotine, robbing the dangerous molecule of it's power.

It still takes a tremendous amount of willpower to stay off the various forms of nicotine after the initial quitting. The pretense of having that first nicotine hit, seeking a consolation from life events, an excuse to make yourself feel better and all the other lies you'd be telling yourself are still very tempting (and exactly the reason I have been using the same pack of medication to __quit__ several times already.