So yesterday I had a very bad tension headache. After everything I usually do to get rid of them (walking, hot shower, etc.) it was still there and I knew I wouldn’t be able to sleep. So I thought I’d take some Tylenol PM. I hadn’t taken any in quite some time–I think it’s been a couple of years.
It was awful. The headache mostly went away, but I was completly unable to sleep and I got the jitters! I lay there for about two hours, trying not to think about it and kind of zoning out but unable to sleep. My jaw would shake if I didn’t control it. It was weird and scary, but I didn’t seem to be able to do anything about it, so I just lay there.
What the heck happened, does anyone know? And have you ever had ordinary OTC medicine backfire on you like that?