what should I do?Update

[siz8003]

the stuff i have is Agrimycin powder ever use it?

 

[dlhunicorn]

that is oxytetracycline .... follow the instructions and dosage for chickens...
ETA: Here is the link from the manufacturer on dosage and such:
http://www.agrilabs.com/po_anti/po_Agrimycin.html

 

[siz8003]

thanks for the link

is there a diff. between agrimycin powder and agrimycin 343?

 

[dlhunicorn]

I do not know (cant see your package)... why dont you google it and try to match up the packaging...then compare info between the two by looking at the info on the product details to make sure.