AI chatbot and nicotine gum aim to help construction workers kick the habit
NCT ID NCT07649018
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This pilot study tests a program to help construction workers in Hong Kong quit smoking. Participants will get nicotine gum, a week of nicotine replacement therapy samples, and 12 weeks of support from a chatbot via WhatsApp. The study will see if this combined approach is practical and helps more people quit than just using nicotine gum alone.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jun 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Hong Kong residents aged 18 or above 2. Smoke at least one cigarette per day in the preceding 3-month 3. Able to communicate in Cantonese (including reading and writing Chinese) 4. Saliva cotinine 30 ng/ml or above 5. Intent to quit / reduce smoking 6. Have instant messaging tool (WhatsApp) installed 7. Able to use instant messaging tool (e.g., WhatsApp) for communication. Exclusion Criteria: 1. Smokers who are participating in other smoking cessation programmes 2. Smokers who are using any smoking cessation medication 3. Smokers who are presenting with the following oral diseases, including recent oral surgery or tooth extraction, unstable dentures, significant tooth mobility or advanced periodontal disease, temporomandibular pain or dysfunction, or painful oral mucosal lesions
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Hong Kong Council on Smoking and Health (COSH)
Hong Kong, Hong Kong, 999077, Hong Kong
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a WhatsApp message help smokers quit?
- Can a brain scan tailor TMS to quiet cigarette cravings?
- Practice quitting: a new way to help smokers who Aren't ready to stop?