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Quitting Smoking clinical trials recruiting in the U.S.

75 studies for Quitting Smoking are recruiting participants at sites across the United States.

Quitting smoking is important for your health. Tobacco use is the most common preventable cause of death. Find the best way for you to quit.

Cities with the most studies

• Minneapolis, MN7 studies
• Chicago, IL5 studies
• Charleston, SC5 studies
• Boston, MA4 studies
• Oklahoma City, OK4 studies
• San Francisco, CA4 studies
• Phoenix, AZ3 studies
• New York City, NY3 studies
• Houston, TX3 studies

By state

• Arizona3 studies
• California8 studies
• Colorado3 studies
• Florida3 studies
• Illinois6 studies
• Kansas3 studies
• Massachusetts5 studies
• Minnesota8 studies
• Missouri4 studies
• New Jersey3 studies
• New York5 studies
• North Carolina5 studies
• Oklahoma6 studies
• Pennsylvania3 studies
• South Carolina6 studies
• Texas6 studies
• Virginia3 studies
• Wisconsin3 studies

Recently updated studies

From ClinicalTrials.gov, data retrieved Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.