Flavour capsules generally contain menthol, but can also include flavours like sugar and cloves
For cigarettes, the nicotine contained in the smoke is the basis for measuring how much is absorbed
Special Eurobarometer 539: Attitudes of Europeans Towards Tobacco and Related Products
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However, this finding also accords with internal tobacco company documents describing small packages as offering a low cost way for current users to try and potentially switch to new brands, particularly in markets with rising prices and among people who are younger and poorer [20]
Nic salts are created by adding a natural acid, usually benzoic acid, to the nicotine molecule