Economy Size Non-GMO Gluten-Free Dietary Supplement Healthy Origins Razberi-K Raspberry Ketones should be used in conjunction with a diet and exercise program. A raspberry ketone is a natural phenolic compound which is responsible for a raspberry's wonderful aroma. Raspberry ketones have been used for decades in the natural flavoring and aromatic industry. However, due to the excessive cost, very limited supply and low yields, raspberry ketones were never studied for any other application until recently. Scientists have now found a way to manufacture high purity, reasonably priced raspberry ketone for supplemental use.