Doxycycline monohydrate is widely used in the medical field as an antibiotic to treat various bacterial infections. It is effective against respiratory tract infections, urinary tract infections, and skin conditions like acne and rosacea. Additionally, it is prescribed for sexually transmitted infections such as chlamydia and gonorrhea. It is also used in the prevention and treatment of malaria for travelers to endemic regions. In veterinary medicine, it is employed to treat infections in animals. Its broad-spectrum antibacterial properties make it a versatile treatment option in both human and animal healthcare.