Did you calculate it correctly ? , If a patient is using this vape and replaces it every 10 days the equivalent amount of nicotine (average each day) is 2 packs per day or 40 cigarettes!, Heres some Vaping to Quit Smoking? Here's the Truth About e Cigarettes. Breast Cancer & E Cigarettes: Is Vaping a Safer Alternative to Smoking? Maurer Foundation Basics of Analytical Thermodynamics Springer Nature Link