Doxycycline is an antibiotic belonging to the tetracycline series of drugs demonstrating a wide spectrum of effects. This semi-synthetic antibiotic drug has a bacteriostatic effect on microorganisms; and it works by inhibiting the ability of microbes to multiply within the body. Doxycycline penetrates cells of microorganisms and works by blocking the synthesis of proteins. Doxycycline demonstrates an effect on a large number of microbes and pathogens of aerobic (requiring oxygen for developme...