Clinical trials · California
Tobacco Use Disorder clinical trials in California
We’re tracking 12 recruiting tobacco use disorder studies with a site in California — including Early Phase 1 and Phase 2 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT06678672Recruiting
Help for veterans who smoke before major surgery
This study tests a program to help veterans who smoke quit before a planned major surgery. The program uses rewards to encourage quitting, and it may improve surgery outcomes.
San Francisco, CaliforniaAges 18 years+ - NCT06218056RecruitingPhase 2
CBD for reducing cigarette smoking in a treatment center
This study tests whether a daily dose of cannabidiol (CBD) can help people who smoke at least 5 cigarettes a day cut down or quit. It is for people staying at a treatment center in Los Angeles where cannabis use is not allowed.
North Hollywood, CaliforniaAges 18–65 - NCT06432985Recruiting
Smoking Cessation Program for Veterans with Cancer
This study tests a video-based program to help Veterans who smoke and are being treated for cancer or lung cancer screening to quit. If you're a VA patient in San Francisco and currently smoke, you may be able to join.
San Francisco, CaliforniaAges 18 years+ - NCT07420283RecruitingPhase 2
Study of Brenipatide for opioid use disorder
This trial tests a new medicine called Brenipatide for people with opioid use disorder who are already taking buprenorphine but still occasionally use non-prescribed opioids. It aims to see if the study drug can help reduce opioid use.
Fountain Valley, CaliforniaAges 18–75 - NCT06994338RecruitingPhase 2
Tirzepatide for alcohol use disorder
This study tests whether a medication called tirzepatide (a once-weekly injection) can help people reduce their alcohol consumption. It is for people who drink heavily, have a high BMI, and are actively seeking help to drink less.
Los Angeles, CaliforniaAges 21–65 - NCT06582888RecruitingEarly Phase 1
VR attention test for smoking cravings
This study tests whether a virtual reality (VR) program can measure how your brain pays attention to smoking cues. It also involves taking a medication called varenicline (Chantix) to see if it reduces cravings. You may be eligible if you are a daily smoker, have been smoking for at least 3 years, and are not ready to quit in the next month.
San Diego, CaliforniaAges 22 years+ - NCT06617312RecruitingPhase 2
Cytisinicline and brain response to smoking cues
This study tests how a medicine called cytisinicline (similar to a plant-based stop-smoking aid) affects brain activity when you see or think about smoking. It may help researchers understand how the medicine works, even if you aren't ready to quit right now.
Los Angeles, CaliforniaAges 18–65 - NCT06296186Recruiting
PTSD treatment for veterans in substance use recovery
This trial tests a condensed form of prolonged exposure therapy for PTSD in veterans who are also receiving treatment for a substance use disorder. The goal is to help you process trauma and reduce substance use together.
San Diego, CaliforniaAges 18 years+ - NCT05999383RecruitingPhase 2
Marijuana and tobacco use study
This trial looks at how marijuana and tobacco work together in your body. If you regularly use both cannabis and tobacco, you may help researchers understand their combined effects.
San Francisco, CaliforniaAges 21–65 - NCT07129590Recruiting
Trauma-informed care to help pregnant people quit smoking
This study tests whether a trauma-informed care approach can help pregnant people who have experienced trauma to quit smoking. The study involves clinicians and patients working together to improve smoking cessation support.
San Francisco, CaliforniaAges 18 years+ - NCT07042451Recruiting
Testing a phone app to support recovery after substance use treatment
This trial is testing whether a smartphone app called Pink Cloud can help people stay in recovery after finishing substance use treatment. You would need to attend one recovery meeting in the next week and use the app on your personal phone.
Los Angeles, CaliforniaAges 18 years+ - NCT06952491Enrolling by invitation
Study on substance use and well-being
This trial tests a program to help people who use substances like cannabis, tobacco, or prescription drugs for nonmedical reasons. It aims to improve well-being and confidence in managing health.
San Mateo, CaliforniaAges 21 years+
Tobacco Use Disorder trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting tobacco use disorder studies listed above.
- San Francisco VA Medical Center · 2 studies
- Zuckerberg San Francisco General Hospital and Trauma Center · 2 studies
- Ark Clinical Research
- Center on Substance Use and Health
- CRI-Help, Inc.
- Evidation Health
- Keck Medicine of USC
- Loyola Marymount University
What taking part in a tobacco use disorder study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Tobacco Use Disorder trials in other states
Common questions
- Are there tobacco use disorder clinical trials in California?
- Yes. We're currently tracking 12 recruiting tobacco use disorder studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a tobacco use disorder study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a tobacco use disorder trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New tobacco use disorder studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.