Do raspberry ketones have caffeine?
There is not a single study on raspberry ketones in humans. However, the raspberry ketones may have had nothing to do with the observed weight loss. The caffeine or any of the other ingredients could be responsible.
Does raspberry ketones contain caffeine?
A study in obese rats found raspberry ketones reduced their total body fat content. In one study, 70 adults with obesity were put on a weight loss diet and exercise program, and randomised to take a supplement containing either raspberry ketones , or other supplements such as caffeine or garlic, or a placebo.