eats lots of organic raw garlic.two or three mashed cloves isn't too much,more if your stomach will tolerate it well.

take whole raw honey with propolis,or propolis by itself. chew on a honey comb if you can get some.

if you tolerate citrus well, try organic lemon juice with the honey.

try taking fresh-freeze-dried stinging nettles(Wild Oregon Harvest and Eclectic Institute both have the freeze dried kind in capsules)..

gargle with warm salt water with high quality sea salt.

Thayers Slippery Elm tablets.

try a saline neti pot to clear your sinuses.