Triple H---what was a common one to clear MRSA? I've been given Bactrim
I sold Levaquin, it was approved for Methicillin susceptible staph aureus. Since MRSA is Meth-resistant, there are few that do the job.
Vancomycin and teicoplanin are glycopeptide antibiotics used to treat MRSA infections, but the Doc may have chosen Bactrim because it is an older drug, not used my as many docs. What happens the longer a drug (particularly an antibiotic) is in play, the more resistance develops within the general community. An older drug like Bactrim can become more "potent" after it's been out of circulation for a while.
I had some urollogists that would use it as a first line, saving "stronger" drugs like quinolones.
Vancomycin is kind of the "last resort" drug. You know, the "he's about to go meet Jesus" drug!
So there are others that will work, but you have the right thing for your severity of condition. That matches the treatment protocols to which I was privy. Besides, the doc wants to save the Big Gun for somebody with one foot in the grave and the other on a banana peel!