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[5] The products were sold for a time via mail order from Luxembourg to avoid the United Kingdom's excise tax

Global Market Presence and Consumer Segments Davidoff Distribution and International Reach Davidoff maintains distribution across major global markets

Filter life runs 6 to 18 months on the gas cartridges and up to 12 months on the HyperHEPA, which is roughly double the average consumer air purifier filter life

Several international guidelines (from the National Institute for Health and Care Excellence, the New Zealand Ministry of Health, the Royal Australian College of General Practitioners, and the Haute Authorit de Sant de France) advise that e-cigarettes may be used for cessation in certain cases but that information should be provided on the risks and uncertainties, including that e-cigarettes are not licensed medicines in most jurisdictions, and that there is a lack of evidence on long-term harms.95 , 97 99 The Australian and French guidelines suggest that other therapies should be considered first.97 , 99 The United States Preventive Services Task Force judged that the evidence on e-cigarettes was insufficient and recommends directing patients to interventions with proven effectiveness and safety.94 Gaps in knowledge Large comparative trials101 will likely refine future recommendations