Tylosin alternative?

[Lyndzie]

So, I hear that tylosin is now prescription only, and I have a respiratory infection going through my flock like dominos. Ideally I'd like to just treat the drinking water, and I think they'd prefer that to IM injections as well. What alternatives are there?

Thanks in advance.

 

[nuthatched]

I believe it can still be ordered for another week, I think deadline is the 23rd.