I would have to say try it and find out. There is really no other way. I tcould depend on your diet, you, and your activity level and such. There is just no certain answer.
Prunes are not always plums! I know; I was taught that prunes were dehydrated plums. However, prunes are a type of plum. They are usually sold dehydrated; they have easy to remove pits and are more oval in shape than are typical plums.
You will have some really unexpected results if you drink that. Pour it out.
No .. Prune juice tastes like a dull grape.. Sparkling water is carbonated water with fruity flavors like watermelon, peach, and etc.