USP nicotine refers to nicotine that meets the standards outlined in the United States Pharmacopeia (USP), which sets quality standards for pharmaceutical substances and products. This designation indicates that the nicotine has been manufactured, processed, and handled according to strict guidelines to ensure purity, potency, and safety. USP nicotine is commonly used in pharmaceuticals, nicotine replacement therapies (NRTs), and other medical applications where high-quality nicotine is required. Adhering to USP standards ensures consistency and reliability in the formulation of medications and therapies containing nicotine. Users can trust USP nicotine to meet stringent quality standards established by the USP.