This may or may not make you feel better... The most I have heard of a chicken getting is 20mg/kg twice a day, but it's usually not more than 10mg/kg twice a day. If your liquid is clear, it's probably the 100mg/ml stuff, but if he took some pills, crushed them and made his own, there's no telling what strength it is, but by law it should say on the bottle.
That said, you average Rhode Island Red hen weighs about 2.9kg (6.4 pounds), so the very most it would get would be 58mg or .58ml of the 100mg/ml liquid twice a day. The more common dose would be half that.
I did read something once that said sometimes a massive single dose can be used, but I don't recall where I saw that. Good news is if your hen seems better after this dose it probably is a bacterial.
And to answer your question, no, I don't think she's gonna die, but she might get the runs, so make sure she has plenty of water.
Hope this helps
-Kathy
That said, you average Rhode Island Red hen weighs about 2.9kg (6.4 pounds), so the very most it would get would be 58mg or .58ml of the 100mg/ml liquid twice a day. The more common dose would be half that.
I did read something once that said sometimes a massive single dose can be used, but I don't recall where I saw that. Good news is if your hen seems better after this dose it probably is a bacterial.

And to answer your question, no, I don't think she's gonna die, but she might get the runs, so make sure she has plenty of water.
Hope this helps
-Kathy