Yesterday I found a bottle of D-3 Softgels at home. I must have bought them last year and forgot I had them. They don't expire until August 2012. Problem is they have been in a room that, through the summer, could have reached 90 degrees every day. The bottle says to "avoid excessive heat". Not knowing just how excessive "excessive heat" is, I wonder if they are safe to take or still have their full potency. They look fine - not glued together.