My patients frequently ask what they can do to protect their immune systems from the corona virus, and virus in general. The answer is a simple one. I advise all of my patients to take zinc at 30 milligrams per day, and Vitamin D at between 5,000 IU (International Units) to 10,000 IU per day. I take 30 mg of zinc and 10,000 IU of Vitamin D every day for protection. I use Pure Encapsulations brand, which sells to doctors, and is of the highest quality that I have ever seen. That is because the company has its own lab, and manufactures its own supplements. I also take Pure Encapsulations liquid fish oil (lemon flavored), and the Glucosamine with MSM and joint comfort herbs for joint integrity. If you would like to order any supplement, Pure Encapsulations makes it all. Give us a call at 818-558-4030 to place your order. They ship in 2 days.