I can't find Polyserum for sale anywhere. After googling it, it seems like it may be discontinued and the replacement is this Bovi-Sera. Is it the same thing and is it okay to substitute for polyserum?
http://www.valleyvet.com/ct_detail.html?pgguid=30e07986-7b6a-11d5-a192-00b0d0204ae5&gas=bovi sera
http://www.valleyvet.com/ct_detail.html?pgguid=30e07986-7b6a-11d5-a192-00b0d0204ae5&gas=bovi sera