Metrogyl, also known as metronidazole, is a potent antibiotic and antiprotozoal medication used to treat a wide range of infections caused by bacteria and parasites. Its mechanism of action involves disrupting the DNA structure of microorganisms, thereby inhibiting their growth and reproduction. This versatile drug is effective against various bacterial species, including anaerobic bacteria and certain protozoa responsible for parasitic infections such as giardiasis, trichomoniasis, and amoebiasis.