Colgate Toothpaste for Sensitive Gums is clinically proven to provide relief for sensitive teeth and help prevent cavities. Made with potassium nitrate which soothes the nerves in exposed dentin this sensitive-teeth toothpaste brings you relief within two weeks. It is also designed to increase protection against the sudden onset of shock due to severe pain and sensitivity. With regular use this cavity-protection toothpaste provides long term relief and increased protection to help ease gum discomfort.