My immunity was shot back in my early 20s after burning myself out quickly eating junk, working nights, and generally not taking care of myself.  It took years to rebuild, and still requires attention to this day.

The cool thing is that now I seldom get sick.  When I do I generally have a longer recovery than I think I should, but again this is generally due to the way my body seems to work.   My family also shares in my remedies and generally don't catch much that goes around, and if they do they just all bounce back much quicker than others. 

My point and lesson is that I just need to not let myself get sick. 

This may sound illogical, but it actually works pretty well for me most of the time if I stay on top of what I know I should be doing. 

Nutrition really does seem to be the key.  All the junk, fillers, and artificial ingredients really aren't meant to be assimilated into our bodies, and eventually they will rebel.  Get plenty of water (rule of thumb is 1/2 an ounce per pound of body weight, or 120 pounds gets 60 ounces). 

I hate swallowing capsules so the ones I take have to be worth my while.  I've been looking into other options, but for now I do go the way of the tablet for my supplements.  The vitamin we use is always Rainbow Light's Complete Nutritional System.  This mighty product not only contains vitamins and minerals, but green foods, enzymes and some herbs for general health. 

I also have come to using teas daily as well.  My favorite formula is  my stress relief tea that contains jasmine green tea, peppermint, licorice root, ginkgo, siberian ginseng, red raspberry leaf, and st john's wort along with some stevia.  These herbs really support your immune system and taste pretty good as well.  If you don't mix your own you can buy a similar, but not identical, blend at the Bulk Herb Store.

When I do feel something coming on I turn first to NOW's Allibiotic.  This blend, in my opinion, is the equivalent to antibiotics.  It is really strong, and I take it as directed for a week when colds and sniffles seem to start heading in the wrong direction.

I do like to mix herbs and try new blends all the time, but these are really my tried and true remedies that I use everyday.  It does all go back to my feeling that herbs and nutrition, while they can be healing, are much more intended to keep you well...  I guess I just don't want to have to get better from an illness, but keep well everyday....