Formula

NaHco3

Derivation

Bicarbonate of sodium is obtained by saturating the carbonate of sodium with carbonic acid. It is in the form of a white, opaque powder, freely soluble in water, with a mild, slightly alkaline taste.

Medical Properties And Action

Bicarbonate of sodium is antacid, alterative, lithontriptic, and from its mildness and non-irritating qualities is more pleasant to the taste and to the stomach than the carbonate. It is extensively used in the preparation of soda and seidlitz powders.

Therapeutic Uses

Bicarbonate of sodium is internally administered in neuralgia connected with acidity of the stomach, cardi-algia, flatulence and vomiting, dyspepsia, diarrhoea, diseases of the skin, albuminuria, calculous disease, etc. Externally in diseases of the skin of a scaly and papular nature, ecthyma, ringworm, and sprinkled over burns and scalds, and combined with an equal part of common salt, for stings of venomous insects.

Dose

Of bicarbonate of sodium, gr. v. to Dose 1419 in carbonic acid water, or with sugar and mucilage.

Effervescing Powders

Pulveris Effervescentes are composed of tartaric acid, gr. xxv, in one paper, and bicarbonate of sodium, xxx, in another paper.

Dental Uses

Bicarbonate of sodium is employed in dental practice to relieve neuralgia of an acid origin, in which a full dose often proves very serviceable; in aphthae of children it is often combined with a little rhubarb and proves very efficacious. Externally it instantly relieves odontalgia when a small portion of the powder is applied to the irritable pulp and properly secured. It is also useful for neutralizing the acidity of the oral fluids, especially when such a condition is the result of pregnancy. It also forms an antacid ingredient in dentifrices.

Dr. E. C. Kirk recommends a thick paste of sodium carbonate as a local sedative and obtundent of hypersensitive dentine, its application to be made to a dry cavity and repeated when necessary. In acute periodontitis, applied to the gums after a slight puncture, it will often afford speedy relief from the pain. As a chemical disinfectant and antiseptic, Dr. Leffmann considers sodium carbonate to be of great value in the treatment of devitalized teeth containing semi-putrescent pulps and food debris, to be followed by injections of warm water.

Dental Formula

For Periodontitis, etc. Carl Seiler.

Sodii bicarb.................

Sodii bibor..................

Sodii benzoate................

Sodii salicylate...............aa

Eucalyptol.................

Thymol..................aa

Menthol...................

01. Gaultheria................

Glycerini...................

Alcoholis.................

Aquae..................q. s. 16 pints. M.

Signa

Use as an antiseptic spray.

Signa 1420Signa 1421