I hope I can get some feedback. I am taking both amoxicillan 500mg PO BID and tetracycline 500mg PO BID at the same time. I have heard and used 2 different antibiotics at the same time but I thought these 2 were contraindicated as they mitigate each others actions? The reason I am taking them is because my internist told me to take both of them until I can see him in a few days. I told him what I had on hand. The Cipro didn't work, which was a shocker for me. He insisted this combo was broad spectrum and not harmful.... All I know is I feel sicker than before and tired and question his logic. All the medical texts say this is not an appropriate combination but off lable and practical use, I believe often overrides standard text in many cases PLEASE, let me know.