Alum, known as fitkari in Hindi, is a chemical compound consisting potassium or ammonium. However, the most widely used alum is potassium alum. Potassium Alum is sold as fine white powder that is used in food preparation like spices or pickling. It is also sold as a large crystal that is used in cosmetics (in deodrant) and after-shave treatment.
Potassium Alum has many medicinal properties. It has astringent, antiseptic and hemostatic properties. These properties work magic in relieving toothache and gum problems.
When you are suffering from toothache, take a small crystal of fitkari. Add it to a glass of half-filled water. Keep it for 1-2 minutes. Now, remove the fitkari crystals. Rinse your mouth with the fitkari water for 5 minutes. Do not gargle or eat anything for next one hour. Do this for 2-3 times a day.