Here are links to studies and statements from several health departments.
- DoxyPEP Info Sheet from the San Francisco Department of Health
- Statement from the San Francisco Department of Health
- CDC Treatment Guidelines
- Statement from the California Department of Public Health
- Postexposure Doxycycline to Prevent Bacterial Sexually Transmitted Infections
- Doxycycline Post-Exposure Prophylaxis to Prevent Bacterial Sexually Transmitted Infections
- Doxycycline After Unprotected Sex Significantly Reduced STIs