Steri Mouth Wash is a combination of two medicines. It is used to treat the inflammation of gums. This mouthwash has antimicrobial action on the infection-causing bacteria. It also reduces inflammation such as redness, pain, and swelling. Steri Mouth Wash should be used as directed by your doctor. Do not use it more than the recommended dose. After taking a measured amount of this medicine in the mouth, rinsed thoroughly so that it reaches every corner of the mouth. The spit out after rinsing. Do not swallow the medicine. The medicine is generally safe with little or no side effects. However, it may cause a bitter taste, staining of teeth, or taste change in some people. If any of these bother you, let your doctor know.