It seems that misoprostol's durability in pill form depends on the pills being sealed (see https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0238628). I'm worried that the rate at which misoprostol "disappears" (not sure what is the mechanism) from the card will be _way_ faster. I'm surprised that the cards don't seem to include date of manufacture.