Smoking cessation drug improves walking function

While researching effect of Nicotine on Ataxias....

Don't smoke is the warning

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1981601/?page=1

But also found this

USF: Smoking cessation drug improves walking function in patients with spinocerebellar ataxia

“Patients receiving varenicline could walk with more ease, with less help and faster than those in the placebo group."

http://hscweb3.hsc.usf.edu/blog/2012/02/21/usf-study-smoking-cessation-drug-improves-walking-function-in-patients-with-spinocerebellar-ataxia/

Anyone used Varenicline?

Comments??