Here is a list of what you need to help support and boost your immune system:
Vitamins and minerals:
A good multiple vitamin and mineral
A, C and D to balance the immune system
B Vitamins to handle the stress
Zinc for the digestive and immune systems.
Herbs to balance the immune system:
Elderberry, Echinacea, Andrographis, Holy Basil (Tulsi)
Foods:
Water and more water
Lemon juice
Bitters
Bitter foods like radicchio, arugula, broccoli, Brussels sprouts, cabbage, kale, radishes
Apple cider vinegar
Teas: Green tea, Echinacea tea, Holy Basil and Ginger tea
Ginger and lemon juice
Eat easy to digest, light foods like soups, stews, kitchari (mung beans and rice), congee
Eat lots of lightly steamed and/or raw vegetables
Eat low sugar content fruits like blueberries, raspberries, strawberries, grapes, peaches, pears and plums
Avoid sugar Reduce or avoid dairy, alcohol, red meat (unless it's organic, range-fed)
If you're not vegetarian eat more cold, northern sea fish (anti-inflammatory)