Kills most bacteria and viruses implicated in sore throat. May be used as an aid in the treatment of such an infected sore throat. Kills most viruses and bacteria within 30 seconds. Always read the label. Follow the directions for use. If symptoms persist, talk to your health professional. Anti-bacterial sore throat treatment Betadine Concentrated Sore Throat Gargle is a concentrated anti-bacterial formula used as an aid in the treatment of sore throats. This gargle must be diluted before use; a convenient measure is included in the pack.