1st off, make a directory so all the info isn't on the one page IMO, too much scrolling. A menu on the left would be ideal, that is expandable with the topics perhaps.
You give the structure of creatine; it would be nice to see the structure of all the other forms as well. There's a lot to read, but sentences like "There is no real data on this ingredient but, in theory, it should work pretty well since both creatine and glutamine are good for you." sound wishy-washy. Actually the whole "tone/voice" of the article is different that what I would use; the author often uses "we", while keeping it impersonal makes it sound more official to me.
Also I'd like to see some sources/references posted.