The category '5% Nicotine' refers to products or substances that contain a nicotine concentration of 5%. Nicotine is a naturally occurring chemical found in tobacco plants and is responsible for the addictive properties of cigarettes and other tobacco products. Products in this category, such as e-cigarettes or vaping devices, typically have pre-filled cartridges or pods that contain e-liquids with a nicotine strength of 5%. These products are commonly used by individuals looking to quit smoking or reduce their nicotine intake. The 5% nicotine concentration provides a moderate level of nicotine, making it suitable for those seeking a satisfying nicotine experience.