Nicotine ditartrate dihydrate is a chemical compound that consists of nicotine combined with tartaric acid in a dihydrate form. It is commonly used in pharmaceutical formulations, particularly in nicotine replacement therapies (NRTs) aimed at aiding smoking cessation. This compound helps alleviate withdrawal symptoms by providing a controlled release of nicotine when administered orally or transdermally. Nicotine ditartrate dihydrate is known for its stability and solubility, making it suitable for various drug delivery methods. When using this compound, it's important to adhere to dosage instructions provided by healthcare professionals and follow proper handling and storage protocols to maintain its effectiveness.