I’m a diabetic, and I can guarantee that the sugar will enter our blood in about 13 to 20 minutes. O-Jay is kinda one of the emergency drinks we diabetics use because of the easy absorption rate. It is very fast. Anything that is liquid sugar will be only minutes to enter your blood stream. OJ, coke, apple juice, lemonade, etc. I don’t think it does very much to keep you awake though. People swear children get hyper from earing sugar, but some objective studies I read about 10 years ago that show it isn’t true.