OHNE GLUTEN.
ZOELIKALIE
Those are the two words to translate gluten free and celiacs disease I think.
For research purposes (my wife is opening a gluten-free bakery & pastry shop), I surfed around the net in Germany, to see how they do it.
There are some options available and I am sure many more I did not find.
Schaer, widely available in drug marts, like the DM chain. Soso stuff, we ate some on our last trip to Austria.
Hammermuehle, a corn producer, they have a shop near Frankfurt I think.
But the best I could find while surfing was an actual Baeckermeister, Thomas Kaufman, who dedicated his craft to gluten free bread. We exchanged some emails since and he is really into his bakery, which when it comes to gluten-free is so important. Passion for quality is it. He ships via his website. Here is his website. Under "links" you can find a whole list of celiac related websites in Germany.
http://www.meingesundesbrot.de/Just so you know, Italy is the the most advanced country when it comes to Celiacs screening. Every child before school age gets tested. Italy is not far from Germany at all and you can find tons and tons of gluten-free products there as well.