Exogenous Ketones

Exogenous ketones are supplements — usually drinks, gels or esters — that raise blood ketone levels directly, without requiring you to restrict carbohydrates or fast first. They're commonly used by endurance athletes and people already following a ketogenic diet who want an additional, direct source of ketones around training. This is a smaller, more specialised supplement category than electrolytes or protein, but it's well established among keto and endurance communities.

All three are ketone ester brands, but they differ in formulation and positioning: HVMN is a well-known US brand covering ketone esters and cognitive-performance products, Ketoneaid is best known for its concentrated KE4 drink, and Veech ketone ester refers to a specific patented ester compound linked to the original Oxford ketone ester research. Taste, concentration and price vary between them, so the right choice depends on your budget and how you plan to use it. Browse each brand's collection to compare options.

Not exactly — exogenous ketones raise blood ketone levels directly, while a ketogenic diet or fasting gets you there by restricting carbohydrates so your body produces its own ketones. Taking exogenous ketones can temporarily raise blood ketones even without being in a dietary state of ketosis, which is why some people use them alongside, rather than instead of, keto or fasting. It's worth noting that taste is a genuine adjustment for most people, as ketone esters are known for a strong, bitter flavour.