There’s a branded form of Varenicline called Champix. It’s not available right now, and it’s not clear when or if it will be back. Because Varenicline is a generic version of Champix, they work in basically the same way.
The main differences between Varenicline and Champix are the names, the companies that make them and the prices.Varenicline is a bit cheaper than Champix, so it’s a good option if you’re not bothered about brand names.
There’s another pill that can help you quit smoking, called Zyban. It has a different active ingredient to Varenicline, and studies suggest it doesn’t work as well at helping you stop smoking.
But if Varenicline isn’t right for you, Zyban might be the one.