Could a simple antibiotic dosing schedule be key to STI prevention?

This study looks at how the body processes doxycycline, an antibiotic, when taken in different ways—either as a single dose or repeated doses (daily or every three days). Healthy adults without any sexually transmitted infections will be randomly assigned to one of these schedules, and researchers will measure drug levels in the blood over time. The goal is to understand how well each schedule maintains effective drug concentrations, which could inform future strategies for using doxycycline to prevent STIs. The study also tracks any stomach-related side effects.