My article published in student Digest-Jan 2018, an official publication of IDA . Chlorine dioxide is a safe antimicrobial mouthwash for daily use. It is used to maintain good oral hygiene, gingivitis, pre and post-surgery and very effective in halitosis. Chlorine dioxide is approved by USFDA as an antimicrobial agent . Unlike chlorhexidine, it is free from staining and doesn't impair taste. Chlorine dioxide mouthwash is available as Freshclor in India, manufactured by Group Pharmaceuticals Limited.