One in eight of 14- to 17-year-olds in Great Britain say they have used nicotine pouches

Users place the sachets, also called snus, under their lip where the pouches release the nicotine. Photograph: NTB/Alamy

One in eight teenagers aged 14 to 17 have used nicotine pouches, a survey has found, adding to health experts’ concern about their growing popularity.

Users hold the small sachets, which look like mini-teabags and are often flavoured, in their mouths to enjoy the release of the nicotine they contain. They are also known as “snus”.