Please note that the recruitment for this study is now complete.
Thank you for your interest in this study. We are testing how much nicotine people get from alternative nicotine products. Further details can be found in the Participant Information Sheet.
The study is run by the Health and Lifestyle Research Unit at Wolfson Institute of Preventive Medicine, Queen Mary University of London and is funded by Cancer Research UK (CRUK).
The study has been approved by the Queen Mary Ethics of Research Committee.