HGH a fizzer?

Do we now distinguish between drugs that actually work and drugs that only work because we think they work? We already control substances that both work and don't work and have bad side-effects (like gluocorticosteroids), so controlling a substance that probably doesn't work and hurts you still makes some sense. I think.

The researchers concluded, "The results of this study suggest that the placebo effect may be responsible, at least in part, for the perceived athletic benefit of doping with growth hormone for some people."

Or do we ban placebos?