Charcoal filters in cigarettes: safer or just a marketing gimmick?
NCT ID NCT07348679
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at whether charcoal-filtered cigarettes change how people smoke and how much harmful chemicals they breathe in. About 252 adult smokers who smoke at least 5 cigarettes a day will be randomly assigned to smoke either charcoal-filtered or regular cigarettes for 4 weeks. Researchers will measure their beliefs about the cigarettes, how they smoke them, and levels of toxins in their urine and breath.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
charcoal-filtered cigarettes
What this could lead to
If successful, this study could help regulators understand whether charcoal-filtered cigarettes reduce harm or just mislead smokers.
What could go wrong
This is an early-stage behavioral study, not a treatment trial. Results may not apply to all smokers, and any perceived benefit could be due to marketing rather than actual harm reduction.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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.
Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Institute for Nicotine and Tobacco Studies
RECRUITINGNew Brunswick, New Jersey, 08901, United States
Contact Phone: •••-•••-•••• Email: •••••@•••••