For cough, fever, osteomalacia, laxity and acidity. The material is treated, with the fluid of various herbs and cultured in fire, as described in ancient Ayurvedic texts mixing with different other ingredients. Patanjali ayurved and Divya pharmacy prepare calx, based on old refinery processes. These products and medicines do not cast any side or ill-effect on the patient and helpful in any of the old or complex disease.