Question: can 12 mg of nicotine hurt you?
Answer: The Toxic Dose of Nicotine: Shattering the Myth Even today, many high-profile sources list the toxic dose of nicotine (the LD50 – or the dose that will kill about half of people exposed) as between 30 and 60 mg. To put this in context of vaping, this would be about 4 ml of 12 mg/ml e-liquid.