Nicotine Salt is the name used for the combination of nicotine and one other chemical to make it more like the type of nicotine that occurs naturally in tobacco leaves. There are a variety of nicotine salts used today, which is why different brands have different levels of throat hit and absorption rates. Some of these are – Nicotine Benzoate, Nicotine Salicylate, Nicotine Levulinate, and Nicotine Lactate.