Does anyone know if I can build up my immune system by taking Echinacea supplements while I breastfeed my 14mo DS, or whether it might even do him some good too? I keep catching colds - I am not used to this European weather and am a terrible judge of what to wear here etc. This last cold I have now even my DS didn't catch - maybe I am rundown by the longterm bfing. Am just rambling now, but can anyone advise me?