Potassium nitrate is used in toothpastes for sensitive teeth. It calms the nerves inside the teeth, so they react less to hot, cold and sweet triggers.

What Potassium Nitrate Is Used For

Sensitive teeth (dentine hypersensitivity)
Pain from hot, cold or sweet foods and drinks
Sensitivity after tooth whitening

Common Side Effects

Mild gum irritation (uncommon)

Precautions

Use the toothpaste twice a day; relief usually builds over two to four weeks. See a dentist if sensitivity continues, as it can signal decay or gum disease. Not recommended for children under 12 unless advised by a dentist.

This page is general information only. It is not a substitute for advice from your doctor or pharmacist, and it does not include dosage. Always follow the directions given to you and read the leaflet inside the pack.