nasty stuff, especially on the dopamine receptors - irreversible according to some studies and also strongly linked with various cerebral neuropathies, including literal holes in the brain, and tumors.
why ya think all the soda companies are getting rid of it and switching to stevia derivatives ? My take is that they've finally caught on, after the recent legislative attempts in New Mexico and elsewhere, and are ushering this stuff out, to avoid the usual potential repercussions. I tasted that stuff once. Yuck.