As the colder weather settles in, giving your immune system some extra support can be a wise move to help fend off seasonal illnesses. Temperature drops and shorter days often increase colds, flu, and other infections, particularly affecting vulnerable groups like older adults and children. Choosing an immune support supplement can provide a valuable boost, but with so many options available, how do you find the best one? Here’s a guide to essential ingredients for selecting an immune system booster for you and your family.