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Enrolling studes

Enrolling studies


Enrolling (2023-2027)

50 participants

SNAP is an observational study exploring the role of methamphetamine use in self-treatment of chronic neuropathic pain among people living with HIV. Participants will complete qualitative interviews and ecological momentary assessment (text messages) reporting on their methamphetamine use and pain. If you are eligible, you can earn up to $342.

For more information, call (628) 217-6319,

Pink and blue Snap logo. Clicking on image takes you to study website.


Enrolling (2023-2024)

250 participants

ASTERISK is a cross-sectional study that aims to better understand the barriers to alcohol use disorder (AUD) treatment among those with AUD. Outcomes will help our research team examine the impact these experiences have on patient treatment preferences. The research team will start by conducting in-depth interviews with primary care physicians/clinicians and with AUD participants. These interviews follow a semi-structured format asking participants to describe factors they consider regarding alcohol and substance use treatment. Once interviewing is complete, the team will recruit 250 participants with AUD, who meet the inclusion criteria, to take a self-administered survey, either online or in person.

If you are interested in being interviewed, please reach out to our team at

Purple and yellow Asterisk study logo. Clicking on image takes you to study website.

CURB-2 is a Phase II clinical trial examining if the combination of extended-release naltrexone and extended-release buprenorphine can help treat cocaine use disorder. Researchers believe the medication may produce an effect in the brain to reduce cocaine withdrawal symptoms. If you are eligible, you can earn up to $1603 for completing all study activities and procedures.

For more information, call (628) 217-6314, email, or visit


Enrolling (2023-2024)

38 participants

Rainbow Curb logo. Clicking on image takes you to study website.


Enrolling (2021-2024)

140 participants

The PRIME Study is a two-arm trial evaluating a strategy to support adherence to pre-exposure prophylaxis (PrEP) for HIV prevention among 140 people assigned male at birth and use methamphetamine. All participants will receive PrEP and counseling during the study. Participants will be randomized 1:1 to receive video directly observed therapy (using a mobile app to submit videos taking their PrEP) with financial incentives, or counseling alone. The study will follow participants for 6 months, and participants will be seen for visits every 6 weeks for counseling, surveys, laboratory testing, dried blood spot collection, and PrEP dispensing.


If eligible, you would receive between $580-$1199 depending on which study arm you are assigned to.  

For more information, call (628) 217-6319, email, or visit

Green and blue Prime logo. Clicking on image takes you to study website.


Enrolling (2021-2023)

24 participants

M 3.0 is a Phase I drug-drug interaction clinical trial of mirtazapine for methamphetamine use disorder (MUD).  Eligible participants will complete a 14-day hospital stay consisting of assessments and laboratory testing as well as a 2-week follow-up appointment after discharge   M 3.0 includes 2 randomized, double-blind, within-subject crossover studies of 12 persons each (12 no opioid use, 12 methadone maintenance treatment) among non-treatment seeking persons with MUD in San Francisco (UCSF) and Los Angeles (UCLA) in California. 

For more information, call (628) 217-6319, email, or visit

Yellow M3 logo. Clicking on image takes you to study website.
Upcomin studis

Upcoming studies



100 participants

BEATS is an observational study that will assess key factors that lead to episodes of heavy alcohol-consumption via text-based surveys and SMART wristband technology, with enrollment capped at 100 sexually active adults who drink alcohol (five or more drinks on one occasion for men, and four or more drinks for women). After being pre-screened, participants will enroll and complete weekly remote visits for 30 days, wearing the BACtrack wristband from Enrollment through Month 1. Our team will also evaluate heavy drinking and associated sexual behaviors using surveys and questionnaires. If you are eligible, you can earn up to $160 for completing all study activities and procedures.


For more information, call (628) 217-6333 or email

Purple and green Beats logo. Clicking on image takes you to study website.



400 participants

The Nightlife study is a one-time online behavioral survey examining party drug use among Men who have Sex with Other Men (MSM) in the San Francisco Bay Area. This study will recruit 400 MSM who use alcohol/substances to complete this web-based survey on substance use and sexual behavior. Potential participants will first fill out an eligibility questionnaire, and then be directed to the actual survey if they fulfill the criteria and are interested in participating. The survey will take between 30-45 minutes to complete.

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Non-enrolling studies

Non-erolling studies


Fully Enrolled (2022-2024)

260 participants

The LASSO study aims to better understand the factors that lead to death from acute stimulant toxicity. In this study, we will first interview 200 people who knew someone well who had a fatal overdose that involved stimulants (methamphetamine or cocaine, with and without fentanyl). Participants will take part in a one-time interview where they will answer questions about the decedent's life events, personality, health history, substance use, and more. Then, we will interview up to 60 people who currently use stimulants about the same topics. We hope this study will contribute to the eventual design of interventions to reduce stimulant overdose mortality.

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Fully Enrolled (2021-2024)

54 participants

The HiNT study will look at the effectiveness in taking oral naltrexone on an as-needed basis to reduce methamphetamine use. Participants will be randomized 2:1 (product/placebo). This study will also be testing a text-messaging strategy to help decide when to take the study medication. This is called an Ecological Momentary Intervention (EMI).

For more information, call (628) 217-6319, email, or visit

Blue and red Hint logo. Clicking on image takes you to study website.


Fully Enrolled (2019-2023)

120 participants

The Harness Study is a double-blind, randomized controlled trial to assess the feasibility, acceptability, and effectiveness of an herbal supplement called kudzu to reduce alcohol use among individuals who drink alcohol. Participants will be randomly assigned to receive 12 weeks of kudzu extract (2 grams) or placebo, to be taken on an as-needed basis with follow-up visits at 1- and 3-months. Participants are seen weekly to complete study activities including receiving the study medication and counseling.

Navy blue Harness logo. Clicking on image takes you to study website.


Fully Enrolled (2019-2022)

268 participants

The REBOOT 2.0 Study is a randomized controlled trial to assess the feasibility, acceptability, and effectiveness of a counseling intervention called Informational-Motivational-Behavioral-(IMB) based counseling to reduce opioid overdose risk among individuals who use opioids. Participants will be randomized to receive 30-45-minutes of overdose prevention IMB counseling or placebo. The study takes place in San Francisco, California, and Boston, Massachusetts. Participants are seen every 4 months for 16 months to complete study activities.

Blue Reboot logo. Clicking on image takes you to study website.

FAQs about studies

Q:  Do you have any studies I can join?

Yes!  Scroll up to see our list of enrolling studies at the top of this page or email to learn more.

Q:  Can I enroll in more than one study at once?

Generally, we encourage people to participate in one study at the time, especially for studies that are researching interventions. For studies that do not involve interventions, it may be possible to participate in more than one study. Ask the study staff for more information. If you're participating in a study with a different organization and want to join one of our studies, our study staff can also discuss whether you are able to enroll in our study in more detail by phone.

Q:  Where do study activities take place?

All study activities take place at our office in San Francisco, CA, located on the 5th floor at 25 Van Ness (at the corner of Van Ness Avenue and Market Street).

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Q:  What are the risk and benefits of participating in a study?

There are different potential risks and benefits of participating in each study. You will learn about this during the screening process as you decide if the study is a good fit for you. In general, there is no guaranteed individual benefit to participating in research, as the interventions are still being tested. Your participation will hopefully lead to public health improvements that will benefit the larger community.

Q:  Will my privacy be protected?

Yes, we do our best to make sure your information is kept private. Personal information is stored in locking cabinets and secured databases. Upon enrolling in a study, you will receive a study ID which is what we will use on all study documentation instead of your name. The only individuals who may access your identifying information are study staff and monitoring agencies in the event of an audit. No data will be included in your medical record, nor disclosed to your provider or anyone outside the study team without your explicit consent, even in the case of a court-ordered subpoena.

Q:  Do I have to stop using substances to participate?

No, abstinence is not required for any of our studies. We follow the principles of harm reduction that aim to reduce the negative consequences associated with substance use while respecting the dignity and rights of those who use them.

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