The preparations used in veterinary treatment are the carbonate and bicarbonate, sulphate, hyposulphite, biborate (borax), and chloride (common salt). In the last form it is a constant constituent of the blood and of all the tissues of the body; horses, like man, appear to be benefited by the introduction of this salt of soda into their food. Most horses like it, and readily lick it from salt rolls or salt rock. Soda salts do not enter the blood so readily as those of potash, and they are most frequently prescribed for neutralizing acidity in cases of acute indigestion and gastric disturbances, and as a saline aperient. Sulphate of soda is an excellent aperient, and has been in use for many years under the name of Glaubers salt. Hypophosphites are thought to be beneficial in restoring nutritive function in some febrile diseases.

The general uses of soda are the same as those of potash and magnesia. Except in the form of sulphate of soda, the drug is not much employed by veterinry surgeons.

The sulphate is one of the most valuable drugs we have, and in small doses is alterative and diuretic, and in large ones aperient. (See Aperients.)

The solution of bicarbonate of soda is a valuable antacid, which may be used in such cases as those for which bicarbonate of potash is prescribed. Being tasteless, horses may be induced to take it in the drinking water when refusing other saline medicines.