The dangers of Chantix

Chantix is a stop-smoking drug, for those of y'all who have forgotten or don't care.

First of all, I am not interested in quitting, because I don't smoke that much- maybe 4-5 cigarettes a day, so this product has never appealed to me.

I have an academic question, though, can they test this product on animals? Do monkeys have nicotine receptors? How would you tell if the drug causes problems in animals like the alleged problems that it is causing in people?

This question may be easier to answer than the last fan- based conundrum.