Age of wormer (medication) - is it still safe to use?

[gritsar]

I have a large bottle of valbazen (albendazole) that I opened back in November of 2008 to worm my flock. I have used very little of it. The bottle says it expires in April of 2011.
Since I opened it two years ago, is it still safe to use?
(My mind says yes, but I just want to double check).
TIA

 

[LadyinRed]

I dont know if its fine but my mind says probably.. Hmm

I wonder if old wormer works like old Phillips does? Good thing chickens already have runny poo!

 

[dawg53]

Yes, it is still good. Mine expires in Sept 2011 and I just used some 2 months ago. I have used only one quarter of the bottle myself. Make sure you shake it well before use.

 

[gritsar]

Thanks