If taken within 72 hours of condomless sex, the common antibiotic doxycycline drastically reduces the risk of gonorrhea, syphilis and chlamydia among transwomen and gay, bisexual and other men who ...

Please provide your email address to receive an email when new articles are posted on . Quarterly chlamydia positivity dropped from 9.6% before doxy-PEP initiation to 2% afterwards among users.

Discover how SF became the first city to use doxycycline to drop STI rates by up to 24%. UCSF experts explain the impact of ...

Doxycycline can interact with certain medications, supplements, and foods. Examples include blood thinners, such as warfarin, antacids, birth control pills, certain seizure medications, and dairy ...