Is monk fruit extract (monk fruit in the raw) a healthy sweetener to add to my coffee?

Probably Acceptable: Monk Fruit In The Raw® is a zero-calorie sweetener made from monk fruit, a vine-ripened fruit native to Asia. The monk fruit extract, which is about 300 times sweeter than cane sugar, is blended with dextrose, a bulking agent, so that it can be conveniently measured, poured and used as a substitute for sugar or other caloric sweeteners. *Each packet contains less than 3 calories per serving,