Kukkutandatvak Bhasma is an Ayurvedic medicine made with egg shell. Its uses It is useful to improve bone density, since it is a good source of calcium. Hence used in arthritis, osteoporosis etc. It is used to treat leucorrhea in women. Kukkutanda Tvak Bhasma ingredient: Egg shell Changeri – Oxalis corniculata Reference: Ayurveda Sara Sangraha.