Is Expired Corid still affective?

[RLynn]

I just noticed blood in my chickens droppings. Enough to raise concern. I pulled out my powdered Corid to start treatment but saw it expired October of 2022. Is it the same as regular medication in that even if it’s expired it still works? Or do I need to go get more for them? I bought this probably last September, I didn’t even think to check the expiration date. I still have half a bag of it left.

 

[BastyPutt]

I just noticed blood in my chickens droppings. Enough to raise concern. I pulled out my powdered Corid to start treatment but saw it expired October of 2022. Is it the same as regular medication in that even if it’s expired it still works? Or do I need to go get more for them? I bought this probably last September, I didn’t even think to check the expiration date. I still have half a bag of it left.

Some here will say no, some here will say it is good for 2 years after expiration.