Doxycycline is a broad-spectrum antibiotic that belongs to the tetracycline class. It is used to treat a wide variety of bacterial infections, including respiratory tract infections, urinary tract infections, sexually transmitted infections (such as chlamydia and syphilis), acne, and certain skin infections. Doxycycline is also commonly prescribed for the prevention and treatment of malaria, as well as for infections caused by ticks, such as Lyme disease and Rocky Mountain spotted fever.

Doxycycline works by inhibiting bacterial protein synthesis, preventing bacteria from growing and multiplying. It is typically taken orally in pill form, and it is important to take it with plenty of water to avoid irritation of the esophagus. Common side effects include nausea, diarrhea, and increased sensitivity to sunlight, which can lead to sunburn more easily. Long-term use can sometimes affect the balance of natural bacteria in the body, leading to yeast infections or digestive issues.

Because doxycycline can make you more sensitive to the sun, it’s advised to wear sunscreen and protective clothing while outdoors. It should not be used in children under the age of 8 or in pregnant women, as it can affect bone and tooth development. Always follow the healthcare provider’s instructions when using doxycycline, and complete the full course to ensure the infection is fully treated.