He is correct, it only comes in an injectable form in the USA and it is a tough injection. Linezolid is also used to treat MRSA infections and is available as an oral dosage. (http://en.wikipedia.org/wiki/Linezolid) so there is something else for you to ask with him about.

The procedure is the best way to clean out the infection, but these are some options for you in case you need something else.