Are there homeopathic analogs to antibiotics?

So, my sinus infection is getting to the stage where I know I’m going to need a Z-pak, but of course, being the weekend, I won’t be able to see the doctor until Monday at the earliest.

Is there an over-the-counter herb or somesuch that mimics an antibiotic so I can get a jump on this bugger before it turns into bronchitis?