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A Systematic Review of Nicotine by Inhalation: Is There a Role for the Inhaled Route? [E-Cigarette Research]
research:documents:7ftqxj9w

A Systematic Review of Nicotine by Inhalation: Is There a Role for the Inhaled Route?

Journal Article 1)

Introduction: A considerable minority of adults remain addicted to smoking cigarettes despite substantial education and public health efforts. Nicotine replacement therapies have only modest long-term quit rates. The pulmonary route of nicotine delivery has advantages over other routes. However, there are regulatory and technical barriers to the development of pulmonary nicotine delivery devices, and hence, none are commercially available. Current knowledge about pulmonary nicotine delivery is scattered throughout the literature and other sources such as patent applications. This review draws together what is currently known about pulmonary nicotine delivery and identifies potential ways that deep lung delivery can be achieved with a simple portable device.

Aims: To systematically review clinical trials of nicotine inhalers, determine whether they delivered nicotine via the lung, and identify ways that pulmonary delivery of medicinal nicotine might be achieved and the technical issues involved.

Methods: Systematic search of Medline and Embase.

Results: Thirty-eight trials met the inclusion criteria. Cough, reflex interruption of smooth inspiration, and throat scratch limited the usefulness of nicotine inhalers. The pharmacokinetic profiles of portable nicotine inhalers were inferior to smoking, but among commercially available products, electronic cigarettes are currently the most promising.

Conclusions: Pulmonary nicotine delivery might be maximized by use of nicotine salts, which have a more physiological pH than pure nicotine, by ensuring the mass of the particles is optimal for alveolar absorption, and by adding flavoring agents. Metered-dose inhalers potentially can deliver nicotine more efficiently than other nicotine products, facilitating smoking cessation and improving smokers’ lives.


z-ref: 7ftqxj9w

1)
Caldwell , et al. (2012), A Systematic Review of Nicotine by Inhalation: Is There a Role for the Inhaled Route?, http://ntr.oxfordjournals.org/content/14/10/1127 accessed: 2013-11-09
research/documents/7ftqxj9w.txt · Last modified: 2014/04/27 14:54 by rainman