Here are some recommendations for supplements which I have found helpful for gut function. These are in addition to pre and probiotics, which I often recommend to clients. There are more posts on gut function here:
Biocidin® is a synergistic combination of botanical medicines, which targets the entire GI tract and oral cavity, and supports microbiome balance for healthy digestion and elimination. The botanicals also have systemic applications in microbial challenges wherever they occur. Laboratory and clinically tested for effectiveness for 30 years.
Predominant in woodlands throughout the world, Turkey Tail (Trametes versicolor) is one of the best-documented mushrooms in scientific research. With a wide spectrum of beneficial properties, Turkey Tail shows much promise in supporting the immune system with its protein-bound and unique polysaccharides. “Host Defense” is very careful about making medical claims, and therefore do not elucidate the beneficial effects of Turkey Tail mushrooms on gut function on this website. However, these effects have been widely understood for thousands of years.