Overview Combo-PEP: Multipurpose Prevention of Post-Exposure Prophylaxis Regimens Status: Recruiting Trial end date: 2023-04-01 Target enrollment: Participant gender: Summary The study will determine tissue pharmacology of a single dose of doxycycline for sexually transmitted infection (STI) Post-exposure Prophylaxis (PEP). Phase: Phase 4 Details Lead Sponsor: Emory UniversityCollaborator: Centers for Disease Control and PreventionTreatments: Doxycycline