<unk>  is a antiseptic that is FDA approved for the treatment of gingivitis.   Common adverse reactions include staining of the teeth and tongue.
Cetylpyridinium chloride
Didecyldimethylammonium chloride
Undecylenic acid
Tetrachloroethylene
Dimethylcarbate
Viminol
Cyclochlorotine
Tiratricol