Originally posted by pikus
ok now i don't take this ephedrine ,but I have a race in teh begining of may and I want to know what can happen when I 'll take this ephedrine 2 hours before the marathon ,and on the start of the marathon I'll take caffeine(marathon lasts about 6 hours)
If you take ephedrine before the marathon, it is unlikely you will substantially enhance your performance, but you may experience any of the following reported adverse outcomes:
Case #1. "dizzy spells that progressed to involve numbness of L arm & forehead, weakness of both legs, SOB, and shaky feelings", "dizziness & tachycardia".
Case #2. Healthy 23 yo cardiac arrest, lacerated coronary (partial dissection) & hematoma.
Case #3. Heat stroke, chest and back pain, hyperthermia and tachycardia while exercising.
Taken from the FDA's summary of adverse outcomes from supplements containing ephedrine alkaloids. Cited at
http://www.vitacost.com/ephedrabad/fda2.html.
Does that clear things up for you?
It's not that people on this forum are unwilling to answer your questions, are so moralistic we won't help you cheat, or anything like that. It's that ephedrine is of little benefit, while being quite dangerous. Caffeine on the other hand is fine. There is a fair bit of literature on its use in sport. The consensus is that having some caffeine will help your performance, particularly if you train without it for a little while before your race. However, the improvement is again small, and their is no dose-response relationship. That is, you will do a (small) bit better for having some caffeine in your system (maybe), but that doesn't mean having a lot of caffeine will make you much better. It won't.
If you want to know more about caffeine there is already a thread on the Health, Nutrition and Supplements forum already; just search for caffeine, and perhaps roadie_scum too since I started it, and you'll find it.