It’s main claim is that by being slow to digest and absorb you’ll have a negligible insulin response to taking it. This may be particularly important to low carb athletes. I looked into it a year or 2 ago and decided it’s just way too expensive. You can get half the way there with a waxy-maize cornstarch that costs a fraction. In fact, I’d say start there and only if you see a benefit with raw corn starch should you step up and experiment with ucan.