Chantix's "tenacious tortoise" will make its way back to TV this Sunday as Pfizer relaunches the marketing campaign for the antismoking drug, Forbes reported Sept. 12.

Pfizer voluntarily stopped airing television advertisements that mentioned the controversial drug by name in January after reports of neurological and psychological side effects surfaced in 2007.

Despite investigations and warnings from the Food and Drug Administration and the Institute for Safe Medicine Practices, however, the drug is still being prescribed and sold all over the country. Chantix is the only drug designed specifically to combat nicotine addiction sold in the U.S.

"Some people thing the drug has been withdrawn from the market," said Veronique Cardon, team leader of U.S. marketing for Chantix. "More importantly, a lot of people haven't heard of Chantix yet."

The new advertisements are similar to those in the previous campaign, which used a race between a tortoise and a hare to show how Chantix can help smokers take the "slow and steady road" to quitting.

However, the new commercials are 30 seconds longer than last year's ads, which only ran for four months. More than half the commercial time is devoted to side-effects information and warnings to patients to stop taking the medication if they experience agitation, suicidal thoughts or suicidal behavior.