The inhaler device consists of a mouthpiece and a replaceable cartridge containing 15mg of nicotine. It is used in the same way as a cigarette, with ‘puffs’ being inhaled as desired in five-minute sessions. Inhaled nicotine is vaporised and absorbed mainly via the buccal mucosa, with very little reaching the lungs.

A cartridge should last for eight sessions before it needs replacing. Maximum usage is six cartridges daily. The inhaler is intended to be used freely for three months, following which the daily dosage should be reduced over a further six to eight weeks. Treatment should be completed within six months.

Because the device is held like a cigarette and the nicotine is inhaled by puffing, the inhaler provides a close approximation of the hand-to-mouth activity and inhaling associated with smoking that reinforce the nicotine addiction. This presentation is therefore recommended
for highly behavioural-dependent smokers. As-required usage also helps to alleviate cravings and provides a sense of control. This device is not recommended for patients with chronic bronchitis or severe asthma.