The second book in a trilogy on iodine and public health in Tasmania, following Goitre Monitor: The History of Iodine Deficiency in Tasmania (2007) and preceding Seaweed: The Status of Iodine and Climate Change in Tasmania (2022), both also in our stock. Iodophor covers the iodine cycle, iodine uptake by plants and its effects on human and livestock health, the history of iodine deficiency in Tasmanian dairy herds since early settlement, and comparisons with the iodine status of the UK and New Zealand, alongside the changing marine environment and government efforts to manage iodine deficiency in Tasmania.