Nicotine USP refers to nicotine that meets the quality standards outlined by the United States Pharmacopeia (USP). This designation ensures that the nicotine has been produced, processed, and tested according to rigorous standards to guarantee its purity, quality, and safety for use in pharmaceutical applications. Nicotine USP is commonly used in various pharmaceutical products, including nicotine replacement therapies (NRTs) such as patches, gums, and lozenges, designed to help individuals quit smoking. It's important for pharmaceutical companies and manufacturers to source nicotine USP from reputable suppliers to ensure compliance with regulatory requirements and to deliver effective and safe products to consumers.