Nicotine polacrilex USP/EP refers to a pharmaceutical-grade formulation of nicotine commonly used in nicotine replacement therapy (NRT) products such as nicotine gums and lozenges. It is manufactured in accordance with the standards set by the United States Pharmacopeia (USP) and the European Pharmacopoeia (EP), ensuring high quality and purity.

Nicotine polacrilex consists of nicotine bound to a resin called polacrilex, which acts as a delivery system for controlled release of nicotine when chewed or sucked. This allows individuals attempting to quit smoking to manage nicotine cravings and withdrawal symptoms more effectively.