Effectiveness of Different THR Products in Adult Population

The study is a two-arm, parallel randomized controlled trial (RCT) with a treatment period of 12 weeks, and long-term follow-up at 52 weeks which plans to enroll 258 smokers from general adult population. Participants who meet the eligibility criteria and give their informed consent will be randomized (1:1) to one of two treatment arms: (1) E-cigarettes (18mg/ml) with individual counselling (2) Nicotine patches (21mg) with individual counselling. Eligible participants must be at least of legal age allowed for smoking in the country, of either gender, regular smokers (minimum 10 cigarettes/day for at least a year) and interested to stop smoking. Participants will be scheduled for a screening visit and a baseline (BL) visit at the trial site. The participants will be scheduled for eight study visits in total, including five treatment sessions and three follow-up visits, using both face to face interaction at trial site as well as follow up on telephone. Eight study visits are planned at weeks 1, 2, 4, 8, 12, 18, 24, and 52. Exhaled carbon monoxide assessment will be used at the trial site to quantify biochemically validated smoking abstinence. All secondary outcomes and self-reported usage of nicotine patches, EC and cigarettes will be monitored throughout the study.

This is a two-arm, parallel randomized controlled trial with a 12 weeks treatment duration and long-term 52 weeks follow-up. Outpatient, and walk-in clinics, and advertising will be used to recruit participants from the general population. Individual counselling regarding smoking cessation will be provided to the participants using EC as well as nicotine patches. Participants included must be at least of legal age allowed for smoking in the country, of either gender, regular smokers (minimum 10 cigarettes/day for at least a year) and interested to stop smoking. Participants will be scheduled for a screening visit and a baseline (BL) visit at the trial site. The participants will be scheduled for eight study visits in total, including five treatment sessions and three follow-up visits, using both face to face interaction at trial site as well as follow up on telephone. Eight study visits are planned at weeks 1, 2, 4, 8, 12, 18, 24, and 52. Exhaled carbon monoxide assessment will be used at the trial site to quantify biochemically validated smoking abstinence (exhaled carbon monoxide levels above ten ppm regarded as indicator of current smoking). All secondary outcomes and self-reported usage of nicotine patches, EC and cigarettes will be monitored throughout the study. Information about self-reported smoking, usage of EC and nicotine patches, use of other smoking cessation therapy and side effects will be gathered at all follow-up calls and visits.

Eligibility Criteria:
Inclusion Criteria:

* Both genders of legal age allowed for smoking as per country law
* Smoked at least 10 cigarettes a day for the past one year
* Exhaled breath CO (eCO) level \> 10 ppm
* Wish to quit smoking
* Able to conform with all study procedures
* Have a mobile phone
* Expected to be available for follow up will be enrolled as study participants

Exclusion Criteria:

* Pregnant and breastfeeding women
* Using other smoking cessation medications (including other forms of NRT other than patch, bupropion, clonidine, nortriptyline or varenicline)
* Having any contraindications to products such as cardiovascular history
* Suffering from a major illness with prognosis of less than 1 year