The short version
Raspberry ketone is what makes red raspberries smell so sweet. It is found in tiny amounts in the fruit and is also used in flavors and fragrances.
Not the same as keto ketones
On a keto diet your body makes its own ketones from fat. Raspberry ketone is a plant compound that only shares the name, so the two should not be mixed up.
What the label says
The graphic says it may help increase fat burning and boost metabolism.* It sits next to garcinia fruit rind, the other fruit-based name on the list.
Worth knowing
Your bottle carries the supplement facts. Use the drops as directed.
Related
The article what keto means on a label clears up the naming.