Hey there,, I had that happen to me back in April.... and had not ordered anything over seas... in several months.... but it came from the Chicago office... and had Codiene....
I've had several letters ( 2 from San Deigo, one from Newark,one from NYC)before along with 3 siezures were they just emptyed out the packages and sent them empty with a OPENED BY US CUSTOMS all over it ....over the last several years....but nothing ever came from it.... no MIB...
But I stay away from OS now,,,,a very happy customer of NWW....
Take care...and dont worry...they have much pressing issues to deal with than a small amount of pills...