Tomato Tea
★★★★★
After suffering with a sinus headache for 3 days and getting no sleep, my wife brewed this tea for me. I thought it was ridiculous but she stood there until I drank it. When she came in to check on me 15 minutes later, I had fallen asleep and stayed asleep for 5 hours! When I woke up, the headache was much better. I continued with the tea for the next 2 days because frankly, it tastes great.
Vitamin C
I find that a megadose of vitamin C (2000 mg) will take care of a sinus headache. Repeat when it starts bothering you again.