The problem with ma huang, the Chinese name for the
herb, is that teenagers were buying it over the counter
and taking a bunch, dieters were abusing it, and drug dealers were using it to make methamphetamine. There was no problem with the herb itself, which is very mild. So you might as well ban Nyquil, and Xanax, which are also abused, and all painkillers, which are abused. If we make illegal everything that's abused, we won't have any medication left, natural or otherwise.