Ammonium Carbonate, a highly useful cardiac stimulant useful in collapse, surgical shock, syncope, and in the depression following profound anesthesia. It combines well with digitalis in this connection. Dose, 10 to 20 grains in elixir or flavored syrup. In moderate doses (5 to 10 gr.) valuable as a stimulating antacid, as in hysteria with acid eructations and in sick headache.

In small doses (I to 5 gr.) a stimulating expectorant, used especially in the latter stages of bronchitis and in pneumonia. In febrile conditions with feebleness it is a stimulating diaphoretic, used in small and frequent doses in scarlet fever, measles, and erysipelas.