[chillacy]

Really? I found several double blind studies showing the effectiveness of acetaminophen on headaches:

http://www.neurology.org/content/48/1/103.short

http://jamanetwork.com/journals/jamaneurology/fullarticle/10...

http://onlinelibrary.wiley.com/doi/10.1111/j.1526-4610.2006....