Armpit sweat aside, I think I want to try this. I have been having more issues with the heat and I cramped up really badly on my hilly ride Saturday. I've tried a couple of energy drinks and they are starting to make me think they cause weight gain. I'd rather eat Shot Blocks or a Luna Bar for carbs and/or protein. Plus Accelerade is bothering my stomach from time to time.
I'm going to go to EMS and buy a sample to test tomorrow.

And to the original poster, the muscle cramping is most definitely related to your Fibromyalgia.I have the same issues, which only ramp up as the season progresses and it gets hotter out.