I want to add in another antibiotic which we feel contributed greatly to John's PN. He was on this drug for about two and half months, but PN has been known to happen while on a short course of this drug. This drug is not used much because they don't want it to be resistant to bugs. It's more of a last resort antibiotic. And, it costs an arm and a leg.

http://en.wikipedia.org/wiki/Linezolid

If you read all of this, you'll see it too disrupts the mitochondia.