Rivanicline is primarily used in the treatment of nicotine addiction. It functions as a partial agonist of nicotinic acetylcholine receptors, helping to reduce withdrawal symptoms and cravings associated with quitting smoking. By stimulating these receptors to a lesser extent than nicotine, it provides a milder effect, which can ease the transition for individuals trying to quit. Additionally, it may help block the rewarding effects of nicotine if a person relapses, further supporting smoking cessation efforts. Its application is particularly beneficial for those who have struggled with other cessation methods, offering an alternative approach to managing nicotine dependence.