The active ingredient of Corsodyl Mouthwash is chlorhexidine digluconate which is an antibacterial agent that reduces the formation of dental plaque and is used to:Treat and prevent gum disease (where gums may bleed when brushed)Promote gum healing after dental surgery or treatmentControl mouth ulcersMaintain mouth hygieneManage oral thrush and denture sore mouthUse only if seal on cap is present and intact before opening.