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Charcoal filters in cigarettes: safer or just a marketing gimmick?

NCT ID NCT07348679

Recruiting now Knowledge-focused Sponsor: Rutgers, The State University of New Jersey Source: ClinicalTrials.gov ↗

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.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

anthrax infection Cigarette Smoking Smoking

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

SMOKING ( CIGARETTE)

Contacts and locations

Locations

  • Institute for Nicotine and Tobacco Studies

    RECRUITING

    New Brunswick, New Jersey, 08901, United States

    Contact Email: •••••@•••••

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