Characters Usage of Bismuth Subnitrate

Bismuth Subnitrate, a white, odorless or almost odorless powder, slightly hygroscopic, make moist blue litmus paper turns red. Insoluble in water or ethanol, soluble in hydrochloric acid or nitric acid.

Because this product is not soluble in water, it can be combined with most of the intestinal mucosa after oral administration of the protein into protein insoluble salt, form a thin film to protect the intestinal wall, to reduce the stimulation of harmful substances. Meanwhile, in the intestinal tract can also be combined with hydrogen sulfide to form insoluble bismuth sulfide, covering the surface of the intestinal mucosa also presents mechanical protection, but also reduce the hydrogen sulfide on intestinal stimulation, so that slows intestinal motility, appear antidiarrheal effect. In addition, the product can be a small amount of slow release of bismuth ions, proteins bismuth ions with bacteria or tissue surface binding, it can inhibit the growth and reproduction of bacteria and antiseptic anti-inflammatory effect. Commonly used in clinical gastroenteritis and diarrhea.

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