D-Ribose is a ***5-chain carbon*** that has been proven to provide medicinal support to those people who suffer from ***chronic fatigue, fybromyaglia and lack of energy***. 5-10 grams 3x weekly seems to be the most ***widely accepted dose*** for this supplement. Food ***does not a***ctually contain D-Ribose so I can understand that this would be an addition to a great diet. Now to answer your question, ***I'm*** going to ask a question... Is it advantageous to supply the body with a more organic/natural form of carbohydrate such as ***beans/quinoa/brown rice/legumes/potatoes***, etc. Or take a substance such as D-Ribose to replace the ***absence of carbohydrates*** to keep the ketogenic state of the body?