You are right. I heard someone have leaky gut cure from using magnesium chloride in water and sipping on it throughout the day. Magnesium chloride is basically Seasalt water...which means purified water and celtic Sea Salt .
Another remedy I was told that will help leaky gut is SANGRA DE DRAGO. Its an amazon rainforest herb that seals and heals wounds but if taken internally it does the same for the leaky gut. it will seal and heal the holes as well as slippery elm.
Also sangra de drago is another version of grapefruit extract.
I suggest trying sangra de drago and cats claw to heal gut
slippery elm.