The dopamine theory has been largely discredited, and the oxidative stress theory which sekio mentioned is currently in vogue. However with MDMA induced neurotoxicity there is more going on than simple oxidative stress, including events in which the main endogenous antioxidant, glutathione, may actually be required for MDMA to damage neurons.
But then how do supplements that aid glutathione production such as NAC and ALA have a protective effect on MDMA related damage.
