No Nicotine: This level will work for you if you just want the feel of smoking a cigarette. If you are anything more than an extremely light (a few cigarettes a week) smoker, this won’t be enough. At least not in the beginning, but we’ll get to that later.
6mg (Low): Considered the ultra-light level, 6mg can be effective if you are used to smoking ultra-light cigarettes such as Pall Mall ultra-lights.
11mg (Medium): Here we start to get into the area where more smokers fall into. This would be considered a light level nicotine strength for most e-cigarette brands. If you smoke a light cigarette, especially if you smoke less than a pack a day, this could fit your needs well.
16mg (High): The majority of smokers will want to start with this level of liquid nicotine or higher. If you smoke a full flavored or regular cigarette and have up to a pack a day, you will want your e cigarette liquid to contain 16mg of liquid nicotine.