||Glass bottle labelled ‘Magnes. Carb’. Magnesium Carbonate (MgCO3). Savory in his 1836 'A companion to the Medicine Chest', p. 58, wrote:
“Magnesia, Carbonate – Is employed like the preceding [Calcinated Magnesia], as an antacid, laxative, and lihontriptic; and, being nearly neutralised by carbonic acid gas, acts gently as an aperient when it does not meet with an acid on the stomach; and is therefore in many cases preferable to the calcinated. The dose is from half a drachm to two drachms.”
Still used in the same way today, and it is a mineral supplement used to prevent and treat low amounts of magnesium in the blood. Magnesium is very important for the normal functioning of cells, nerves, muscles, bones, and the heart.