I learned a great tip yesterday. I was mentioning to an expert on nutrition, supplements and natural medicine that I spend most of the winter with a dry cough due to post nasal drip. She said to try a supplement called Quercetin with Bromelain. Quercetin is a plant-derived flavonoid, and Bromelain is a pineapple extract. Both have anti-inflammatory properties and together can ease sinusitis and post nasal drip. I must honestly admit that it seems to be working!