Rimonabant is primarily used as an appetite suppressant in the management of obesity. It works by blocking the cannabinoid receptors in the brain, which helps reduce hunger and control cravings. This mechanism makes it effective in aiding weight loss, particularly in individuals struggling with obesity or related metabolic conditions. Additionally, it has been explored for its potential in treating smoking cessation by reducing the rewarding effects of nicotine. However, its use is limited due to associated side effects, including mood changes and depression, leading to restrictions in many countries. Research continues to explore its therapeutic applications while addressing safety concerns.