A few months ago, we wrote about the five supplements we felt were the most important supplements to be taking at this time to support immune health.  They are: A high-quality multivitamin, like our Beyond Health Multi.   Vitamin C (either powdered or in tablets), 6 grams a day or to bowel tolerance, in divided doses.  Enough Vitamin D3 to achieve a high-normal level on a 25(OH)D blood test. Beyond Health Cell Repair Formula or Beyond Health Quercetin Pro, 2-4 tablets daily. Zinc.  Under age 40, 25 mg per day from Beyond Health’s Multi.  If over 40, an additional 25 mg from Beyond Health’s Zinc Formula for a total of 50 mg per day.  Most health-minded people today are aware that a multi, vitamins C and D, and zinc are good for the immune system.  But quercetin? Some people haven’t even heard of it.  So what is quercetin (pronounced kwer’-si-tin)?  And why do we believe it&rs…