I can tell I no longer have the constitution I once did with me catching viruses and not getting over them as I once did. I am miserable now with a sinus infection that has its grips on me. I have been thinking of getting a flu shot too but they won’t give it to me until I am over this and with me have less bounce back ability I don’t know how long that will be.I have never taken this antibiotic or actually until recently I never even took them. This one (Ceftin) is nasty. It is chalky and tastes terrible as soon as you place it in your mouth it starts to dissolve and even worse it belches back on me later. At one time I felt almost immune to colds and respiratory problems. I do know that even though I worked outdoors in all weather including rains and occasional snows that I went for well over a decade without ever catching cold. Now my immune system has taken a hard left I believe. If I were able to work like that once more I think the outdoors helps build your tolerances up to things like colds and sinus/bronchial infections. I hope to be on the mend and out into the great outdoors again soon. Hunting or fishing soon would be nice. I feel so stifled inside all the time with central heat and air. I prefer a little cold and the heat to certain degree. I think it makes you stronger if you can stand it. Hopefully I will be over this soon and back to my old disgruntled self.