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Skeptic - 8:27 pm on Jul 12, 2007 (gmt 0)
Ephedrine/Pseudoephedrine has been "restricted" due to conversion to meth. You can still buy it over the counter, but only in limited quantities.
Ephedra was banned in the US a few years back (mainly due to people misusing it for dieting and/or bodybuilding). But then there was some federal court ruling that put the ban on "hold." I am not sure what the final resolution was.