👉 Metronidazole is a type of medication used to treat bacterial infections, such as those caused by bacteria like E. coli or Streptococcus pneumoniae. It works by interfering with the synthesis of proteins that are essential for the growth and survival of the bacteria. Metronidazole can be taken orally or topically (topically) depending on how severe your infection is. It's generally used in combination with other antibiotics, such as amoxicillin or cefixime, to