You are technically correct (the best kind of correct), but I guess parent was asking whether this has any anti-bacterial side effects that might affect the gut flora. I'm wondering about this as well. The drug in question isn't an anti-biotic per-se, it doesn't help fight sepsis by making your body even more indiscriminately angry at bacteria - quite the opposite. Based on that, my suspicion is that the gut flora would not be affected directly, and would be happy on the basis of the host itself surviving the sepsis.