"Tobacco-free" nicotine refers to nicotine that is not derived from tobacco plants. It can be created in a lab, also known as synthetic nicotine or non-tobacco nicotine, or it can be derived from other sources such as eggplants or potatoes. Products that contain "tobacco-free" nicotine are regulated by the FDA and can be marketed as such if they contain no tobacco leaf or if the nicotine is created in a lab. However, regardless of the source, nicotine is addictive and harmful to young people, as it can disrupt the formation of brain circuits that control attention, learning, and susceptibility to addiction. "Tobacco-free" claims may increase appeal and use among young people. Nicotine pouches and lozenges that do not contain tobacco but do contain nicotine, flavorings, sweeteners, and plant-based fibers are becoming increasingly popular. The long-term health impact of these products is still unknown, and they are not regulated as strictly as smoked tobacco products or combustible tobacco by the FDA.