Introduction and purpose: The primary objective of this literature review is to thoroughly investigate the topic of nicotine replacement therapy, considering the latest discoveries and detailing various forms of available nicotine substitution. Materials and methods: Literature review of PubMed and Google Scholar databases. State of Knowledge: Tobacco smoking remains one of the leading causes of premature death worldwide, accounting for millions of deaths each year. Nicotine, the addictive component of tobacco, is responsible for sustaining cigarette smoking patterns and making smoking cessation particularly challenging. Nicotine replacement therapy (NRT) is now considered one of the primary methods to help individuals quit smoking by r...