When the sniffles or body aches start in this house, one of us runs to Sprouts for a tried and true friend :
The key ingredient that sets it apart from emergen-C, Airborne and the rest is grapefruit seed extract (GSE). It is a natural antibiotic with a variety of established uses. Google for more info :-) (FYI, there are medications with which you cannot ingest grapefruit...to my knowledge that's the only warning for it).
As far as cold/flu symptoms go, this stuff usually has us back on our feet in a day or two. No side effects--I hate the dry mouth and spacy feeling of over the counter medications so this is perfect. Only a few times has it not been helpful; I believe I had strep and an ear infection simultaneously once that needed some prescription antibiotic (and don't NOT go to the doctor's if you need to!).
We get it at Sprouts and it runs about $15 for a small bottle and about $23 for a big one. I figure our copay at the doctor's office is $20, and then there are usually prescriptions after that, so it's a good deal if it keeps us from having to make appointments!
I got a bottle today--we've let the gunk go on longer than usual in our house without grabbing some. Planning to feel better soon!