Magnesium beta-hydroxybutyrate (magnesium BHB) is a compound that combines magnesium, an essential mineral, with beta-hydroxybutyrate (BHB), a type of ketone body. Magnesium is involved in many processes in the body, including muscle and nerve function, while BHB is naturally produced by the liver during periods of fasting or low carbohydrate intake. Magnesium BHB is available as a supplement.
Magnesium BHB may provide magnesium to the body while also increasing levels of ketone bodies in the blood. Ketone bodies can be used as an alternative energy source when glucose is limited. Magnesium supports normal muscle and nerve function, heart rhythm, and bone health. Research on how magnesium BHB works specifically in supplement form is limited.
People most commonly use magnesium BHB to support ketogenic or low-carbohydrate diets and for energy or endurance. It is also used for general magnesium supplementation.