It will be fine.
FWIW, I've been now fighting RIs with nebulized F10SC. I did a write up on it a while back. It works quicker than anything I've ever used - antibiotics included.
I'm not advocating stopping your antibiotic therapy. But augmenting it with nebullized F10SC would not hurt.
I've been getting my F10 from England from a vendor on ebay. He was reliable and shipped fairly quickly.