Substitute for Airborne?
Anybody know of any substitute for Airborne? My husband I use it all the time, but now it is play havoc with my stomach. I guess it must have citric acid or such in it. My husband is immune-compromised due to his many ailments, and the doctor warns him to protect himself. So whenever we feel either of us has been exposed to anything to head it off at the pass with Airborne. So far it has worked like a charm. But now, with this flare-up, I'm sure I won't be able to use it anymore. Ideas?