genocurt, I have experimented and found that one serving a day (for me 1/2 teaspoon) isn't the answer. I benefit from 1/8 teaspoon with a meal. I add it to hot milk teas and weak hot chocolate, smoothies, pancakes, any food that seems palatable, or just hot water. Note that my gut is really sensitive to everything. Another person may need or benefit from more. I like Frontier Co-Op Slippery Elm Inner Bark Powder. It is the inner bark that is slippery. I haven't tried to chunky tea style, that may have outer and inner bark in it.

Good to know about dragonfruit! I rely on kiwi (there is a study), leafy greens like spinach and collards, as well as rhubarb.