I'd also noticed that some of the cortef tabs were softer than others. There was one batch that we had that seemed too easy to split. (They almost crumbled). It also coincided with a higher OHP level. We pitched those tabs. I am now very specific as to how my daughter's meds are stored. On those few occasions that I accidently left the emergency pack in the car and the temp was hot in the car, now I just pitch them. Why take the chance?