I wrote Sharon Hull to tell her the bad news and here is her reply:
This is such bad news! Guess I’ll be hoarding my supply from now on, and not freely sharing. I still have about 30 tablets which “expired” in July 2010, but I used the same batch successfully in Alaska so suspect in time they may lose some effectiveness but not all. And I will write Craig Sherman of course, though he sounds pretty determined that production is over.