When I take Tylenol my heart races, I cannot sleep, jittery. Only with Tylenol. If this is not an allergic reaction to Tylenol what could it be.
Could be a placebo effect (you believe it is causing the symptoms so you have the symptoms) or you could simply be sensitive to acetaminophen, the active ingredient. Either way, stop taking it if it is causing a problem and take a different analgesic.
I got off of all NSAIDs a couple years ago and do not remember symptoms with it, but since starting to take it for pain (maybe 3 pills a day) my blood pressure rises, I can't sleep, and I get heart palpitations. I cannot take other NSAIDs because I'm very allergic to them (aspirin, ibuprofen, naproxen, etc.). What in the heck am I going to take now for pain?