"It was billed as the one of the most dramatic warnings the world has ever received over the dangers of ecstasy. A study from one of America's leading universities concluded that taking the drug for just one evening could leave clubbers with irreversible brain damage, and trigger the onset of Parkinson's disease.
"...The study was based on the fact that laboratory monkeys and baboons had a severe reaction to the drug when it was injected in small doses. But it emerged this weekend that the vials of liquid did not contain ecstasy. Instead, the animals received a dose of methamphetamine, or speed - a drug widely known to affect the body's dopamine system. The tubes had somehow been mislabelled by the supplier. "

Looks like someone was getting high on their own supply.

Scientists admit: we were wrong about 'E'