Yikes.
It depends on the brand, it's best for everyone to read the label but especially someone with potentially life-threatening issues.
Still, most electrolyte replacement drinks if they contain any herbs, it would be stevia for sweetness and nothing else. There are a lot of drinks sold to athletes that have herbs for other reasons, but I think we're only talking about electrolyte replacements here. GNC particularly markets a lot of bodybuilding and weight-loss oriented snake oil stuff. Visit your LBS or LRS for things that are more oriented toward endurance athletes - just about all of them have Hammer and Gu products and possibly a few other brands.
Last edited by OakLeaf; 09-26-2011 at 10:06 AM.
Speed comes from what you put behind you. - Judi Ketteler