Doxycycline is a versatile antibiotic used to treat various infections, including respiratory, skin, and sexually transmitted infections. Dosage varies based on the condition being treated, age, and patient-specific factors. View doxycycline information, including dose, uses, side-effects, pregnancy, breast feeding, monitoring requirements and directions for administration. Doxycycline is an antibiotic that is commonly used to prevent malaria, improve tooth attachment and reduce gum pockets in people who have a dental procedure called scaling and root planing for. Doxycycline is a broad-spectrum antibiotic that is employed in the treatment of numerous bacterial infections. Doxycycline is used to treat infections caused by bacteria and certain other infections spread by ticks, lice, mites, and infected animals. Doxycyline is also used to prevent malaria and to treat acne and rosacea (a skin disease that causes redness, flushing, and pimples on the face) Doxycycline is used to treat bacterial infections in many different parts of the body. It is also used to treat pimples and abscesses (usually on the face) that are caused by rosacea, also known as acne rosacea or adult acne. Doxycycline is a tetracycline antibiotic that inhibits bacterial growth and is thought to have anti-inflammatory effects. Doxycycline is used for bacterial infections, including acne, rosacea, urinary and respiratory tract infections, eye infections, gum disease, gonorrhea, chlamydia, and syphilis. Learn about the side effects of doxycycline, from common to rare, for consumers and healthcare professionals. NHS information about the medicine doxycycline, including what it's used for, who can take it, how to take it and side effects. Read on to learn about the common and rare side effects of doxycycline and how to manage them.