Nicotine is the addictive stimulant found in tobacco cigarettes. Despite the fact that a lot of electric cigarettes contain nicotine because they are often used as a cigarette substitute, having an electric cigarette with nicotine is purely a personal preference. The nicotine provides the smoker a nicotine kick so that they don't want to smoke a tobacco cigarette. Obviously, e cig brands are keen to sell e-cigarettes with nicotine in them because it encourages tobacco users switch to ecigs and it also encourages electric cigarette users to keep buying refills.
Ecigs don't have to contain nicotine. Electric cigarettes are electrical devices that are used as an alternative to cigarettes. The electronic cigarette is a device which functions in a similar way to a nebuliser. The ecig has an electrical filament called an atomizer which is powered by a small battery. It heats up the e-liquid, just like the way a kettle filament boils water. The e-juice contained in e-cigarettes determines if the electric cigarette contains nicotine or not, and you can even vary the amount of nicotine in e juice. The electric cigarette will still be enjoyable whether it contains nicotine or not.
The flavoured liquid in electric cigarettes is known as e juice. You can buy a number of different tasting eliquids and quite often it is possible to choose the amount of nicotine of the e-juice. In case you are going to use an e cig as an alternative to normal cigarettes, it is advisable to begin with an electronic cigarette with a high nicotine content. This may then be gradually reduced over a period of time, dependent on the needs and wants of the ecig smoker. Ultimately, using a method like this will enable the user to smoke e-cigs containing a flavoured liquid with extremely low nicotine levels, or preferably an e juice with no nicotine contained.
One of the primary benefits with electric cigarettes is the control esmokers possess. Even though you'll find different cigarette companies offering different flavoured tobacco cigarettes, they're all based around tobacco for obvious reasons. E-cigs allow electronic cigarette smokers to have total control on the flavours which they smoke. The flavours vary from the normal tobacco cigarette and cigar flavours to the many fruit flavours.
As said before, it's possible for the ecig to contain different levels of nicotine which is also present in cigarettes. The difference between the two types of cigarettes though is that the traditional cigarette burns tobacco, and it is the tobacco which contains both tar and the harmful carcinogens. The e juice does however contain traces of tobacco because it is found within nicotine itself. Pharmaceutical grade ejuice can be bought, and it has a very refined form of nicotine which is found in products such as Nicorettes, a licensed pharmaceutical product that helps cigarette smokers quit.
E cigs provide people who smoke with a nicotine kick plus the pleasure of tobacco cigarettes but with no cancer causing agents. Examine my own evaluation on electric cigarettes or alternatively, have a look at http://www.freedomcigarettes.com