After failing to outrival Pfizer in the anti-smoking treatment market with a generic drug, Hanmi Pharmaceutical has released another copy to win over Pfizer’s original treatment Champix.

The local drug company said it has started selling "Nocotine," a self-developed nicotine fighting treatment using oxalate as the base, from November.

Nocotine uses varenicline oxalate hydrate as the main ingredient, attaching oxalate to the anti-smoking substance varenicline. It is a generic copy of Pfizer’s Champix, replacing the base with oxalate.