Many of us need vitamins and minerals to battle colds and sicknesses like Covid but only ONE is absolutely essential for you to take. Vitamin C in large doses. I take 4000mg a day and I never even get a cold. What your body doesn’t need will be eliminated from the body via urine. I buy 1000mg tablets and take two of them after lunch and two tablets after supper. Never take Vitamin C on an empty stomach. Please people take a hefty dose of Vitamin C and give your kids a tablet every day after lunch or supper. God Bless