Ultra Fast Keto Boost Ingredients :- Ultra Fast Keto Boost Ingredients Whenever we look into a supplement that claims to boost the keto diet, there’s one thing that we look for first – BHB. That’s short for Beta-Hydroxybutyrate (see, that’s why we shortened it). It’s an exogenous ketone. Remember, ketones are those things that tell your body to burn stored fat for energy and “exogenous” just means it’s coming from an outside source. Ultra Fast Keto Boost Ingredients contains BHB in the form of BHB salts, but the manufacturer doubled down and added other ingredients as well.