Clin2
NCT07755618Possibly a fitEnrolling by invitation

Doxycycline levels and adherence study

Sexually Transmitted Infection

Part of Infections clinical trials.

This study looks at how the antibiotic doxycycline stays in your body and how well people stick to taking it. It may help find better ways to prevent infections.

Summary written for real people, not researchers, by Clin2.

Phase
Phase 1
Enrollment
16 people
Ages
18 years to 65 years
Study type
Interventional

Who can take part

  • You are between 18 and 65 years old.
  • You have a negative HIV test at screening.
  • You have at least 1 cm of natural hair (no bleach, dye, perm, or relaxer) and can keep it that way during the study.
  • If you can become pregnant, you must have a negative pregnancy test and use two effective birth control methods.
  • You have a smartphone or laptop and can do video calls for directly observed dosing.
  • You are in good general health and can swallow pills.

View the official record on ClinicalTrials.gov

Quick eligibility check

Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.

Similar studies

Other trials that look related to this one.

NCT06738407Recruiting· Phase 4
Doxycycline to prevent STIs in high-risk people

This study tests whether taking a daily antibiotic (doxycycline) can prevent sexually transmitted infections in people at high risk. If you've had an STI recently and sometimes have sex without condoms, you might be able to join.

Los Angeles, California
NCT07215325Recruiting· Phase 4
Can doxycycline prevent STIs in men?

This trial tests if taking doxycycline after sex can lower the risk of getting sexually transmitted infections (STIs) in men who have sex with men and are at higher risk.

Atlanta, Georgia
NCT07704957Not yet recruiting· Phase 4
Preventing bacterial STIs in women with post-sex doxycycline

This study tests whether taking an antibiotic called doxycycline after sex can prevent bacterial STIs (like chlamydia and gonorrhea) in women. You would take the pill within 72 hours after sex and track it with a smartphone app, aiming to reduce your risk of getting an STI.

NCT04762134Recruiting
Doxycycline to prevent future bacterial STIs in high-risk men

This trial tests whether taking doxycycline can lower the chance of getting bacterial sexually transmitted infections like syphilis, gonorrhea, and chlamydia. It is aimed at men who have had these infections recently and expect to keep having multiple male partners.

Calgary, Alberta
NCT07500415Recruiting
Doxycycline to prevent STIs in Rio de Janeiro

This trial tests whether taking the antibiotic doxycycline can prevent sexually transmitted infections (STIs) like chlamydia, gonorrhea, and syphilis in people at higher risk. If you are a man or transgender woman who has sex with men, are living with HIV or on PrEP, and have had an STI in the past year, you may be able to join.

Rio de Janeiro, Rio de Janeiro
NCT06778083Recruiting
Antibiotic to prevent STIs and its effect on resistance

This study looks at taking doxycycline to prevent sexually transmitted infections (STIs) in men who have sex with men. It focuses on how this approach might affect the body's resistance to antibiotics.

London

Hear when a new Sexually Transmitted Infection trial opens

We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.