I have been suffering with a sinus infection for over 2weeks and had post nasal drip so badly that I could not sleep at night from the coughing. I used the neti pot about 3 times a day and that helped but not enough. Out of desperation after trying all sorts of remedies I made a drink and sipped it all evening. I squeezed half a lemon in about 18 oz of water, added 2 teaspoons of pure honey and a cinnamon stick. It worked a treat as for the first time in 2 weeks I slept through the night with no fit of coughing. In the morning when I got up and blew my nose loads of mucus came out and my head felt clear And I don't have the feeling of the mucus going down the back of my throat. I have been drinking this all day and I feel tons better. Thought I would share this as nothing has ever worked so quickly.