Glutamine, creatine, whey protein, fast carbs for postworkout, vitamin C and multivitaminmineral tablet is all the supplements I ever used. I think glutamine works, especially when dieting for contest when you are in a more catabolic state then normal. I get my stuff free, but glutamine is cheap as hell anyway, like 40 bucks for 2 pounds, thats enough for quite some time. I used 20 g aday. You get 2-3 grams a serving with protein powder only, thats not much.