However do remember honey is the only food on earth that doesn't go off... has it crystalised?...if so run it under a warm tap and it'll be fine even after years...... if you think it's been tampered with, then return it to the store...
I'm wondering just what "blossoms" were used in the honey. For instance, if it's sage blossom, sage can have an odd metallic taste (in my opinion). That said, I wouldn't eat anything that tastes weird ... and would probably take it back or report it to the store.