Achieve Life Sciences, Inc. is a late-stage clinical pharmaceutical company. The Company is engaged in development and commercialization of cytisinicline for smoking cessation and nicotine addiction. The Company’s product candidate, cytisinicline, is a naturally occurring, plant-based alkaloid. Cytisinicline is structurally similar to nicotine and has a well-defined, dual-acting mechanism of action that is both agonistic and antagonistic. Cytisinicline is a partial agonist that binds with high affinity to the alpha-4 beta-2, nicotinic acetylcholine receptors in the brain. Through its dual-acting partial agonist/partial antagonist activity, cytisinicline helps reduce nicotine cravings, withdrawal symptoms and reward and satisfaction associated with smoking. It is developing cytisinicline as an aid to smoking cessation and treatment for nicotine addiction to address the limitations of both prescription drugs and of over the counter (OTC) products.