Pro-drugs limerick
@starkatt Just, uh... not more than once every few weeks, though, or it can cause issues.
Actually, what's the most complete research on that? It's been a year or so since I dug into it, but I do recall there being studied evidence of some risk of damage with very frequent use, that being more than once a week or so. I might be remembering wrong.
Pro-drugs limerick
@starkatt Oddly enough, I'm going to suggest that Wikipedia isn't the most useful source on this, simply because of the breadth of influences on the text (data pulled from discredited studies, scare tactics, and the like).
Try http://drugs.tripsit.me/mdma and http://wiki.tripsit.me/wiki/MDMA – well-researched and well-compiled information from folks who are interested first and foremost in drug knowledge and safety.
Their recommendation: Leave 2–3 months between rolls.