Antibiotic help

   An elderly chicken keeper once gave me an antibiotic called Tylan? I have forgotten the dilution other than one teaspoon in a pint. I can't remember the further dilution. Can anyone help me please. I have a poorley hunched up elderly hen,didn't move or eat all day. I have given yakult but if she's still with us tomorrow I want to start with tylan. Thanks in advance.

I agree with antibiotics you need to check the date, I had to chuck an almost full bottle of tylan because I only used it once many years ago and didn't need it again afterwards.
Being hunched up could mean several things - she is laying a soft shelled egg, she has had an egg break inside her etc Ideally she needs to see a vet who will decide if she needs antibiotics (if she does they may well give an anti b injection as that will act quicker) and will also tell you the period where you have to throw her eggs away. With some anti B's this can be for life.