Question: what vitamins and minerals are good for the immune system?
Answer: Vitamin C. You probably know about vitamin C's connection to the immune system, but did you know you can get it from much more than just citrus fruits? ... 
Vitamin E. ... 
Vitamin A. ... 
Vitamin D. ... 
Folate/folic acid. ... 
Iron. ... 
Selenium. ... 
Zinc.