The worst drug experience of my life was on Tramadol, I have been using prescription pure codine for 3 years due to a back injury, I had run out and a friend said he had some Tramadol and gave me a couple of them.
They were 200's per pill, slow release. ( I didn't know they were slow release when I took them).
So I took 1 pill and felt little effects after 1 hour so I took the second one, that makes 400 Tramadol total.
Within 30 minutes I got waves and waves of nausea, vomited non stop for 10 hours, I would spend 20 minutes hanging on to the bathroom sink just convulsing and heaving my by now empty stomach and then go and try to lie down, within 5 minutes I was back at the sink vomiting again, it just wouldn't stop, and the slow release meant I had to just deal with it as a 12 hour nightmare.
It was honestly the sickest I have ever been on any drug and scared me shitless towards the end.
Just a thing to bear in mind before you start upping the dose or fooling with this drug.
peace
webby