Margaret, Most MDs are educated on what medications your on and how they will react. There’s also a secondary safety precaution in place at your pharmacy where a computer will put out a warning if it sees a problem. The worst thing I’ve seen is if people read the literature that comes with the Rx then their to scared to take it as the side effects are listed. The thread below naming Levoquin as bad for people with neuropathy. Levoquin which I take for sinus infections are rough on the tendons. But having chronic sinus infections and it’s the only thing that works for me…..David