Generic Chantix is a prescribed medicine used to help people quit smoking. It assists with reducing cravings and withdrawal symptoms linked to quitting smoking, as it works by aiming at the nicotine receptors in the brain. Generic chantix is also known as Varenicline, which is a partial agonist at the alpha-4 beta-2 nicotinic acetylcholine receptors in the brain. Research shows that vareniciline can raise the probability of quitting smoking as compared to placebo. It is advised to consult a medical professional for dosage and prescription.