I ran into this problem not long ago. I also did much research on exp dates of zeo products and if you search the zeo forums you will find others have also asked. Zeo has stated that their products will be fine up to 12 months after expire date.
I hope its ok to link this but here is my question to them regaurding CV:
http://www.zeovit.com/forums/showthread.php?t=19081