Seriously....because I've had terrible headaches followed by severe tooth pain...I mean all of them on one side of my face. To be told by a dentist I have a disease free mouth..left writhing in agony on the couch unable to sleep yet another night when I realized my nose hurt too. You aren't supposed to take any of the sinus pills available in store so I grabbed the Neti Pot as it's all natural and it gave me instant relief. I went from considering the ER to being left with just a dull barely there ache. Try it! But don't neglect making sure you see your Dr. to make sure it's not an infection that needs more serious treatment.