Achieve Life Sciences, Inc. (Achieve or the Company) (Nasdaq: ACHV), a late-stage specialty pharmaceutical company focused on the global development and commercialization of cytisinicline as a treatment of nicotine dependence, today announced that it has received a Complete Response Letter (CRL) from the U.S. Food and Drug Administration (FDA) regarding the New Drug Application (NDA) for cytisinicline. The CRL relates to outstanding manufacturing-related observations from a current Good Manufacturing Practice (cGMP) inspection of a third-party manufacturing facility and to final product labeling that was not completed by the FDA’s action date. The FDA identified no deficiencies regarding the clinical efficacy or safety of cytisinicline.