ORS has become a household name these days as it acts as the basic treatment for diarrhoea and cholera. This solution can even be prepared by untrained people. July 29 is observed as ORS day in India. But do you know its history and how it was discovered and most important question is who discovered it? Dr Dilip Mahalanabis, is the pioneer of ORS (Oral Rehydration Solution). How did he discover? During the Bangladesh liberation war, he prepared a solution for rapid rehydration to fight diarrhoea and cholera in refugee camps. As he was already a part of research in oral rehydration therapy , he prepared this solution to treat people as the intravenous fluids (saline) stocks were running out. To convince people the new treatment would work, they were told it was an oral form of saline. “The oral solution that we elected to use consisted of 22 gm glucose (as commercial monohydrate), 3.5 gm sodium chloride (as table salt) and 2.5 gm sodium bicarbonate (as baking s...