Nicotine is the active and addictive ingredient in e-liquid and usually comes in 0mg, 3mg, 6mg, 12mg and 18mg variants. Nicotine is the reason why people smoke cigarettes. There’s an old saying in the tobacco industry: 'people smoke for the nicotine but die from the tar.' With vaping, you get all the nicotine you want, but without any of the poison that is produced by burning tobacco.
But nicotine is still an addictive substance, so it makes sense to control how much of it is going into your body. With traditional cigarettes, this was never really possible. But with the electronic version, there are many nicotine strengths to choose from, allowing for much greater control over one's nicotine intake levels. The smoothness or harshness of the 'throat-hit' is essentially determined by the nicotine level.
When smokers first make the switch from cigarettes to electronic cigarettes they usually like to vape e-liquid with a higher nicotine content. With the more advanced and increasingly powerful devices available today, the highest nicotine strength required to achieve satisfaction - even immediately after switching from cigarettes - will rarely be above 18mg. And after a few months of vaping, people often find themselves requiring less nicotine and gradually move towards a lower nicotine level. The more powerful the device, the more throat hit it produces. So, as vapers move to more powerful devices, they often find themselves lowering their nicotine level for this reason, too. Nicotine also contributes to the flavour of your vaping experience. Too much nicotine, and your liquid can start tasting a bit spicy and peppery; too little nicotine, and the satisfying 'kick' that every vaper (or smoker) is familiar with starts to disappear.
Choosing Your Nicotine Strength
Which nicotine strength should you choose?
What if I don't want any nicotine?