The strength of nicotine in Lost Mary vapes typically varies depending on the product line and region, but most Lost Mary disposable vapes come with a nicotine concentration of 5% (50mg/mL). This level is considered high and is designed to provide a strong and satisfying hit, especially for former smokers or those looking for a more potent vaping experience. However, always check the packaging or product description, as some versions may offer lower nicotine levels like 3% or even nicotine-free options depending on availability.