1, fresh fruits and vegetables absorb vitamin C and bioflavonoids;

2. Shellfish and nuts absorb zinc;

3. Whole grains and beans to get vitamin B;

4, sunflower seeds, seed oil, to take vitamin E;

5. Garlic and onions;

6. Herbs and condiments with decongestant effect, such as Sambucus williamsii, thyme and ginger.

I suggest you go to a professional hospital to do "nasal endoscopic technique" to cure sinusitis.