Doxycycline (Doxyperl) 100mg Capsules 100's is an antibiotic medication used to treat a wide range of bacterial infections, including respiratory tract infections, acne, urinary tract infections, and certain sexually transmitted infections. It works by inhibiting the growth of bacteria, preventing them from multiplying. Each capsule contains 100mg of Doxycycline, and the pack contains 100 capsules. It is essential to follow the prescribed dosage instructions and complete the full course of treatment to prevent the development of antibiotic resistance.