Kidney stones are a known potential side effect of the ketogenic diet. Exogenous ketone supplements are a novel technology, so it is currently unknown if it could cause a similar problem, but it is possible. Clinically, potassium citrate is used to help decrease the risk of kidney stones (See here: http://www.webmd.com/kidney-stones/potassium-citrate-for-kidney-stones), including those that occur with the ketogenic diet. Potassium citrate is available commercially; however, as always, consumers should consult with their physicians before taking any supplements.
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