My athletic trainers at my school are really ticking me off and not telling me what I need to know about vitamins and this supplement. I am looking at taking GNC Pro Performance Thermo Burst. I do not taking any other supplements, just vitamins and thats it. Other than Guarna (just because it is a natural caffeine) is their anything else that is illegal in Thermo Burst? Here is a link and its ingrediants:
link- http://www.gnc.com/product/index.jsp?productId=2133625&cp=2167077.2712284.2168524.2169544&parentPage=family

Ingrediants:
Vitamin C
Niacin
Vitamin B-6
Pantothenic Acid
Yerba Mate Extract
Guarana Seed Extract
Black Tea Leaves Extract
Ginger Root Extract
Schisandra chinensis Fruit Extract
Dill Weed Extract
Grape Seed Extract
Other Ingredients: Cellulose, Caramel Color, Ethyl Vanillin, Vegetable Acetoglycerides (Natural Mineral Whitener), Calcium Carbonate

I always go to the source. The NCAA has a web site, go there and either email or snail mail a request for banned supplements. Then keep their reponse. In other words, you have it in writing, and you can sleep better at night.