Since we already have over-active immune systems, it's best to avoid things that say they "boost" the immune system.
Echinacea is an immune system booster, and has been known to make Lupus act up.
Zinc (which Zicam is) is okay, I think.
I generally stick to Vitamin C myself. Plus homemade chicken soup and sugar-free orange juice or just oranges.
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2000DIAGNOSING LUPUS & HW's LUPUS 101
"Life is far too important to be taken seriously." - Oscar Wilde