I'm almost certain that I experienced these brain zaps a few days ago...I'd been taking tram on and off for about a week, using heroin on days between use...the most I ever had at one time was 200 mg. I might have 400-500 mg throughout the day, but use was spaced out. This time, I took 300 mg all at once...about an hour later, I got that nervous spacey feeling, as they were starting to take affect. Soon after this I felt very uncomfortable, almost twitching, and then I had these overwhelming feelings like I was being shocked, or falling asleep and waking up really fast from a dream where you're falling off a cliff...that's really the best way I can describe it...
Also, has anyone experienced grinding your teeth while on trams? I sometimes catch myself doing it, and try to stop but it's almost uncontrollable...not so much grinding, but pressing my molars together...I don't know, it's very strange.