Mouth Gel Chlorhexidine 0.2 forms a barrier over your gums and teeth during dental procedures, preventing plaque buildup for up to 12 hours. This aids in the treatment or prevention of gum disease and oral infections. If you have a mouth ulcer or sore throat, it also helps to relieve your symptoms. Mouth Gel Chlorhexidine 0.2 eliminates the dangerous oral germs that cause tartar, inflamed gums, and poor breath. In doing so, it disinfects the wounded region and hastens recovery. Use this gel precisely as directed by your doctor.