Purchased Cytomax 18th April after the first time my son used it my husband noticed the best buy date of 12/2010 I took it back to see if they would exchange the supplement for another which had not passed the shelf life and he told me absoutley not I had open the container and basically told me to leave.The other number on the container is81132908co 10;40 When I asked him to check the other containers he said the date on those were unreadable. Trisha Rostek [email protected] read full review »