Have you checked out butyrate? There are some sodium butyrate supplements on the market. And a Japanese probiotic with Clostridium butyricum which produces butyrate. Certain cells in the gut derive 70% of their energy (ATP) from butyrate. Butyrate deficiency => weak gut cells => inflammation + permeable gut lining.
„Protective Mechanisms of Butyrate on Inflammatory Bowel Disease“: https://pubmed.ncbi.nlm.nih.gov/30277149/