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Drug Use and Addiction clinical trials in Houston, TX

9 studies for Drug Use and Addiction are looking for participants at sites in and around Houston (within about 30 miles). Open a study to see who can join and how to contact the study team.

Recruiting for a study here? Feature it at the top of this page — $99 for 30 days →

About Drug Use and Addiction

Drugs include prescription and over-the-counter medicines, alcohol, tobacco, and illegal substances. Repeated drug use can change the brain and lead to addiction.

More about Drug Use and Addiction on MedlinePlus

Drug Use and Addiction trials in other cities

• Baltimore, MD13 studies
• New York City, NY9 studies
• New Haven, CT8 studies
• Charleston, SC8 studies
• Boston, MA7 studies
• Chicago, IL7 studies
• San Francisco, CA6 studies
• San Diego, CA6 studies
• Los Angeles, CA6 studies
• Dallas, TX5 studies
• Providence, RI5 studies
• Salt Lake City, UT5 studies

Other studies in Houston

• Non-Small Cell Lung Cancer145 studies
• Breast Cancer126 studies
• Cancer (all types)121 studies
• Metastatic Cancer104 studies
• Colorectal Cancer102 studies
• Ovarian Cancer89 studies
• Acute Myeloid Leukemia85 studies
• Lung Cancer78 studies
• Prostate Cancer76 studies
• Endometrial Cancer68 studies
• Pancreatic Cancer61 studies
• Melanoma59 studies

From ClinicalTrials.gov, data retrieved Oct 6, 2026. Each study sets its own eligibility; the study team decides who can join.