Twenty-nine patients completed the study; five were lost to follow-up, and two withdrew. With bismuth subgallate, scores improved by about 1.5 points on all four questions about stool and flatulence odor.
“Most of these patients had complaints of ‘all the time’ or ‘very frequent’ odor issues, and this really takes [those complaints] down to ‘occasional’ or ‘rare.’ It’s a pretty big change,” Dr. Medlin said.
Total Gastrointestinal Quality of Life Index scores improved as well, from a mean at baseline of 93 points up to 109 points out of a possible score of 160 points. Scores on the digestive portion improved from 49 to 60 points. Bismuth subgallate outperformed placebo significantly on both measures. There were trends toward improvement in other domains as well.
Stools darkened in one patient, and the tongue darkened in another; both are well-known side effects. There were no drug toxicities.