Doxycycline (Dothix) 100mg Capsule 100's is an antibiotic used to treat a variety of bacterial infections, including respiratory infections, urinary tract infections, skin infections, and certain sexually transmitted diseases. Doxycycline works by inhibiting the growth of bacteria, helping the body fight off infections. Each capsule contains 100mg of Doxycycline, and the pack contains 100 capsules. It's important to follow the prescribed dosage and complete the full course of treatment to avoid resistance and ensure the infection is fully treated.