Dental · FAQ
What side effects can Chlorhexidine gel cause in the mouth?
Short answer
Chlorhexidine gel can cause tooth or tongue staining, taste changes, mouth irritation, and more tartar buildup. Stop using it and seek emergency help for trouble breathing, facial swelling, or other signs of a severe allergic reaction. Tell your prescribing physician or dentist about persistent burning, sores, or painful swelling.
Chlorhexidine used in the mouth can cause staining of teeth, the tongue, and some dental restorations. It can also change taste, irritate the mouth, and increase tartar buildup. The chance of these effects may depend on the formulation and how long you use it. Tell your prescriber if an effect bothers you or does not go away.
A dental professional may be able to address some surface staining during cleaning. Results vary. Do not use harsh scrubbing or home bleaching methods on irritated gums. Keep your planned dental visits, and follow your dentist’s advice about brushing and cleaning between teeth.
Rare but serious allergic reactions can occur with chlorhexidine. Stop using the gel and call 911 for trouble breathing, throat tightness, swelling of the face or tongue, or faintness with an allergic reaction. Stop and contact your prescriber promptly for mouth peeling, significant swelling, or severe burning. Mention any past reaction to chlorhexidine, including reactions to skin cleansers, before starting treatment.
Sources
Written by the Verra clinical team · Medical review pending
General information, not medical advice. If you're in crisis, call or text 988.