One study found that exogenous ketone supplements may decrease appetite for over four hours when taken in a fasted state, but other research suggests that they may hinder weight loss efforts. Until more research is available, there's no real support for using ketone supplements as a weight loss aid.

Does drinking ketones actually work?

Research does show that exogenous ketones may suppress hunger, boost energy and enhance cognition, but they also inhibits your ability to burn fat and improve metabolic state (that's the health of your heart, your liver, your kidneys and your body as a whole).

How long does it take for ketones to work?

In general, it should take you 2–4 days to enter ketosis. However, some people may find they need a week or longer. The time it takes depends on various factors, such as your age, metabolism, exercise level, and current carb, protein, and fat intake.