This section is from the "A Handbook of Useful Drugs" book, by State Medical Examining and Licensing Boards.
Properties : Potassium bicarbonate occurs as colorless, transparent crystals, odorless, having a saline and slightly alkaline taste; it is permanent in the air. It is freely soluble in water (1:3), but is practically insoluble in alcohol.
Incompatibilities: It is incompatible with acids.
Action and Uses: Potassium bicarbonate is sometimes used to neutralize the acidity of the stomach, but sodium bicarbonate is usually preferred. It may be employed for the extemporaneous preparations of potassium acetate or potassium citrate. If a solution of acetic or citric acid or lemon juice is neutralized with potassium bicarbonate, an equivalent dose of potassium acetate or citrate is formed.
Potassium bicarbonate, even when neutralized in the stomach has a tendency to render the blood alkaline and to lessen the acid of the urine. It may be given to secure the same alkaline effects for which the acetates or citrates are usually employed.
Externally, potassium bicarbonate may be employed for its alkaline effects, for the purpose of softening the epidermis.
Dosage: 2 gm. or 30 grains.