PrEP Clinical Trials

49 recruitingLast updated: June 18, 2026

There are 49 actively recruiting prep clinical trials across 19 countries. Studies span Not Applicable, Phase 1, Phase 4, Phase 2, Phase 3. Top locations include Shanghai, Shanghai Municipality, China, Lilongwe, Malawi, The Bronx, New York, United States. Updated daily from ClinicalTrials.gov.


PrEP Trials at a Glance

49 actively recruiting trials for prep are listed on ClinicalTrialsFinder across 6 cities in 19 countries. The largest study group is Not Applicable with 33 trials, with the heaviest enrollment activity in Shanghai, Lilongwe, and The Bronx. Lead sponsors running prep studies include Changhai Hospital, Georgetown University, and University of Texas Southwestern Medical Center.

Browse prep trials by phase

Treatments under study

About PrEP Clinical Trials

Looking for clinical trials for PrEP? There are currently 8 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new PrEP trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about PrEP clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 49 trials

Recruiting
Phase 3

STI Testing to Enhance PrEP Use in Pregnancy

PregnancySexually Transmitted Infections (STIs)PrEP Adherence
Botswana Harvard AIDS Institute Partnership600 enrolled1 locationNCT06919614
Recruiting
Not Applicable

HIV Pre-Exposure Prophylaxis (PrEP) Linkage With Immediate Medications in the Emergency Department Study

PrEPHIV Pre-Exposure Prophylaxis
University of Texas Southwestern Medical Center250 enrolled1 locationNCT07462611
Recruiting
Not Applicable

Using PrEP, Doing It for Ourselves

HIV PreventionPrEP
Duke University1,000 enrolled1 locationNCT06638892
Recruiting
Not Applicable

Bringing Medicines for HIV Prevention to a Family Planning Clinic

HIVPrEP
Women and Infants Hospital of Rhode Island83 enrolled1 locationNCT06930508
Recruiting
Not Applicable

Electrolyte Beverage Combined With Polyethylene Glycol for Colonoscopy Bowel Preparation

ColonoscopyColorectal Cancer ScreeningBowel Preparation Solutions
Nanfang Hospital, Southern Medical University405 enrolled1 locationNCT07608120
Recruiting
Not Applicable

Pre-packaged Low-residue Diet for Bowel Preparation in Patients With Inflammatory Bowel Disease

ColonoscopyIBD (Inflammatory Bowel Disease)Colonoscopy bowel preparation
Changhai Hospital1,000 enrolled1 locationNCT07353853
Recruiting
Not Applicable

Comparing Three Rescue Bowel Preparation Regimens for Colonoscopy After Failed Cleansing

Bowel Cleansing for ColonoscopyInadequate Bowel Preparation
Ospedale San Pio220 enrolled1 locationNCT07557173
Recruiting
Not Applicable

Pre-Packaged Low-Residue Diet Assisting Bowel Preparation in Patients With Inflammatory Bowel Disease

IBD (Inflammatory Bowel Disease)Colonoscopy bowel preparation
Changhai Hospital500 enrolled2 locationsNCT07165470
Recruiting

Analysis of Factors Influencing the Quality of Bowel Preparation Before Colonoscopy in IBD Patients

ColonoscopyIBD (Inflammatory Bowel Disease)Colonoscopy bowel preparation
Changhai Hospital1,000 enrolled1 locationNCT07335705
Recruiting
Phase 4

Intestinal Preparation in Colonoscopy: Lactulose vs Sodium Phosphate.

Bowel preparation for colonoscopy
Hospital Civil de Guadalajara300 enrolled4 locationsNCT07060222
Recruiting
Phase 1Phase 2

Study Assessing CLENPIQ as Bowel Preparation for Pediatric Colonoscopy

bowel preparation
Ferring Pharmaceuticals30 enrolled5 locationsNCT04113382
Recruiting

Effects of neck muscle vibration on motor planning in healthy young adults

Cortical activity associated with voluntary movement preparationMotor Planning in Healthy Adults
Prof Bernadette Murphy - Ontario Tech University30 enrolled1 locationACTRN12626000408381
Recruiting
Not Applicable

Same-Day Awake Mastectomy With Immediate Breast Reconstruction for Patients With Breast Cancer

Breast CancerMastectomyPrepectoral Breast Reconstruction+1 more
University of Rome Tor Vergata100 enrolled1 locationNCT07510698
Recruiting
Not Applicable

California MEPS Hub

Substance Use Disorder (SUD)HIV PreventionHepatitis C Virus (HCV)+3 more
University of California, Los Angeles318 enrolled3 locationsNCT07433985
Recruiting
Not Applicable

Evaluation of mHealth Intervention to Promote HIV Prevention and Overcome Stigma Among Transgender Women (EMPOW.HER)

HIV PreventionHIV-related StigmaPrEP Adherence
Institute of HIV Research and Innovation Foundation, Thailand108 enrolled3 locationsNCT07509827
Recruiting
Not Applicable

Optimal Bowel Preparation in Geriatric Patients With a Instructional Animation Video Before Colonoscopy

Geriatric PatientBowel Preparation Before ColonoscopyInstructional Methods
Mersin University80 enrolled1 locationNCT06794112
Recruiting
Not Applicable

HIV Self-testing for Partners of HIV-uninfected Postpartum Women

FeasibilityHIV PreventionPrEP Uptake+3 more
Massachusetts General Hospital120 enrolled1 locationNCT07194902
Recruiting
Not Applicable

A Multi-Level Trauma-Informed Approach to Increase HIV Pre-exposure Prophylaxis Initiation Among Black Women

WomenIntimate Partner Violence (IPV)HIV Prevention+1 more
Johns Hopkins Bloomberg School of Public Health300 enrolled1 locationNCT06703060
Recruiting
Not Applicable

PathToScale: The PERSIST Trial

Oral Pre-exposure Prophylaxis (PrEP)Long-acting Injectable Cabotegravir for PrEP
Georgetown University9,900 enrolled1 locationNCT07221747
Recruiting
Not Applicable

Liposomal Bupivacaine Versus Ropivacaine for Preperitoneal Infiltration Analgesia in Upper Abdominal Laparotomy

AnalgesiaLiposomal BupivacainePreperitoneal Infiltration
Qilu Hospital of Shandong University146 enrolled1 locationNCT07271979