eye-twitching is meth. common side-effect.
when you go through a meth overdose, your body starts attacking itself. your blood pressure gets so high that you're literally under risk of your cardio-vascular system exploding. in the end, you usually die of mass organ failure.
if you survive, you can expect recurring hallucinations for up to a year.
i'm in full support of legalizing marijuana and everything, but legalizing mdma would certainly save a lot more people's lives - and prevent a lot of people from the side effects of meth abuse.
http://www.cbc.ca/news/canada/british-columbia/angel-loyer-lawrence-teen-overdose-new-westminster-alberta-edmonton-mdma-drugs-1.4138235