Can a common supplement help dual users quit tobacco and pot?
NCT ID NCT04627922
First seen Nov 18, 2025 · Last updated May 15, 2026 · Updated 23 times
Summary
This study tested whether N-acetylcysteine (NAC), an over-the-counter supplement, can help people who use both tobacco and cannabis cut back or quit. Fifty-nine adults who smoked cigarettes and used cannabis took NAC or a placebo for 12 weeks. Researchers tracked changes in days of use, number of cigarettes, cravings, and dependence. The goal was to see if NAC reduces use of both substances.
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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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Locations
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San Francisco Veterans Affairs Medical Center
San Francisco, California, 94121, United States
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