MDMA and SPEED at the same time? or seperately?
Regardless they both have amphetamines in them which speed up your whole body especially your heart. If your danceing and moving around its all the much more worse. So to answer your question if you went as far as overdosing i would blame it on the MDMA and SPEED. Know your limits and role, research and knowledge will keep ya healthy and havin fun.
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"Create Your Own Ecstasy"