I have been diagnosed with FM/CFS and havent' really found any of the prescribed meds to help with CFS so that i can work. My husband is from Peru and his dad is an Herbologist? anyway he brought some Maca powder back and i put that in like a smoothie. I have noticed a big difference in my energy levels. I can make it through the day without people telling me i look tired, i'm not having to go to bed as soon as i get home. It's worth a try. You can buy this in pill form at Natural food stores. It's worth a try, my pain isn't gone but it's a little more tolerable. I drink it in the mornings. Also it curbs your appetite so i'm not eating sugar foods like i was. Please try this, it's made it so much easier to work. Let me know.