In my younger years i had taken antibiotics on several different occassions for several different reasons. I am now in my early thirties and have just been prescribed antibiotics. My wife assures me that all antibiotics kill your good bacterias and that i must take some sort of suplement tablets to replace them.
Is there any truth to this, and if yes, why on earth did the doctor prescribing me the antibiotics not inform me of this, or any of the previous doctors i had seen?