Nicotine ditartrate dihydrate is a chemical compound that consists of nicotine combined with ditartrate salt and water molecules. It is commonly used in pharmaceutical formulations, particularly in nicotine replacement therapies (NRTs) such as nicotine lozenges or nicotine gums. This compound allows for the controlled release of nicotine when consumed orally, aiding in smoking cessation efforts by reducing nicotine withdrawal symptoms. Nicotine ditartrate dihydrate is formulated to provide a gradual release of nicotine into the bloodstream, mimicking the nicotine delivery from cigarettes and helping individuals gradually reduce their dependence on smoking.