That's surprising, I always though that Germany was the only coutry who allowed relative freedom regarding the MMS/CDS/CDH line of products.
In France, I get my products from Mineral Solutions, a firm based in UK, which sells MMS1, 2 and DMSO at honest prizes. To respect legislation they have to mention that all products are for external use only. But they are safe to drink provided you take the correct dosage.
I have always been satisfied with the quality of their products, but they are not the only providers in Europe. You can get a list of providers somewher on this site, but I can't seem to remember where.
As far as metal implants go, there was no adverse effect from using MMS. Like said before, titanium cannot react with a weak oxydizer (If it didn't, it would rust from repeat contact with blood)
All my prayers go to your healing.