Really? I found several double blind studies showing the effectiveness of acetaminophen on headaches: http://www.neurology.org/content/48/1/103.short http://ww

Really? I found several double blind studies showing the effectiveness of acetaminophen on headaches: http://www.neurology.org/content/48/1/103.short http://www.neurology.org/content/48/1/103.short http://jamanetwork.com/journals/jamaneurology/fullarticle/1032899 http://jamanetwork.com/journals/jamaneurology/fullarticle/10... http://onlinelibrary.wiley.com/doi/10.1111/j.1526-4610.2006.00376.x/full http://onlinelibrary.wiley.com/doi/10.1111/j.1526-4610.2006....