Grog, I'm sorry to hear of your friends plight. Remind her that not every coach is like that. I do not like coaches who tell you to take supplements. Best to have a good clean and balanced diet. Sometimes, iron, calcium and vitamine supplements are needed but if your have a good diet, you probably can do without.
I also wonder about some of the new sport drinks. i.e. Accelerade and others. I don't understand what it says...And I don't think FDA or even USDA regulates what goes in those things.
I'll stick to natural/organic stuff like Luna bars, fig newton, banana, OJ, granola bars.
My body has been fine tuned over millions of years (of evolution), it doesn't know what to do with all that synthetic stuff we consume.
smilingcat