Doxycycline is a well-tolerated antibiotic that is commonly prescribed to treat bacterial sinus infections. It's usually taken as 100 mg twice daily or 200 mg once daily for five to seven days.

Lindsay Curtis is a health & medical writer in South Florida. She worked as a communications professional for health nonprofits and the University of Toronto’s Faculty of Medicine and Faculty of ...

Antibiotic resistance happens when harmful bacteria develop ways to resist antibiotics. Overuse and misuse of antibiotics cause bacteria to become resistant, making them harder to kill. People on long ...