I know! I didn't know that either last night when I looked at his thread, he told us this morning. Location is important! It can be a struggle finding "products" in certain areas. Some countries you can get a LOT more "stuff" than in the US, you just never know:)
all well and good, but @hector92 lives in the UK. Not everything is as easily obtained like here in the US. Here is his thread https://www.backyardchickens.com/threads/chicken-has-been-attacked-by-fox-and-had-a-deep-and-nasty-puncher-hole.1289141/
All good advice and suggestions here.
Good job @webbysmeme in taking care of her.
I will add this - IF she were mine, yes! I would start antibiotics. Since the OP has a relationship with the vet, then I would get her to send something.