I take excedrin every morning for my headaches/neck pain. it works the best out of any meds i've ever taken..is this bad to take long term?

MOH: Medication overuse headache which results from the repetitive and chronic use of headache abortive medications for three months or more, is a major cause of chronic daily headache affecting 1-2% of the general population. Research studies have shown that as few as 15 single doses a month of a Acetaminophen could be sufficient to cause moh.

Too many headaches: It would be better to see a doctor and try to get the headaches controlled, rather than continue what you're doing now. The Excedrin is most likely causing the headaches at this point. The phenomenon is called a rebound headache cycle. Any medication taken for headaches under those circumstances would do it: even plain Tylenol (acetaminophen).