Bismuth subgallate, with a chemical formula C7H5BiO6, is commonly used to treat malodor by deodorizing flatulence and stools.

In the United States, it (bismuth subgallate) is the active ingredient in Devrom (internal deodorant), an over-the-counter FDA-approved medicine.

[3] In 1974, a reversible encephalopathy was noted and examined in four colon cancer patients taking bismuth subgallate after abdominoperineal resection.

[3] It is grouped in pregnancy category C[3] (risk not ruled out: Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks).

[3] Crystal structure determination of bismuth subgallate revealed it is a coordination polymer with the formula [Bi(C6H2(O)3COOH)(H2O)]n2nH2O.