Ideas for Immune Boosters???

Hey OHers!
Wanting some info... my daughter started school this past September & I've basically been sick since then!  I'm more than OVER IT!!!  I have to find something to boost my immune system... any ideas???
Thanks a bunch for your help!

How are your labs?

Labs seem to be just fine... I guess that's why I'm that much more stumped!

echinacea, goldenseal, ginsing, zinc, astralgus, oil of oregano