Houseseller: May I suggest adding 500mg Vitamin C daily together with Zinc (both available from good chemists)to your routine.
I take this almost year round and haven't had a cold for several years (touch wood!) Because of a member of the family being treated for cancer I too need to protect him as much as possible by avoiding passing on infections. Hope this helps.
Anxiety over gc going on days out
Have you stopped buying papers?
Retiring and living frugally in money from downsizing after years of stress




