i have been taking ribose for about a month, and have gotten great results. i have been very disabled with fibromyalgia for the last 18 years. i feel so much better that i am planning on taking a job. i recommend trying it, it won't help everyone, but i'm glad i tried it. if it doesn't seem to help, try taking more at first. i started taking 3 scoups a day of corvalen for about 2 weeks, now i take just 2 tsp. a day- 1 morning 1 at noon. which makes it very economical. any more and i have a great deal more energy, but very nervous.