What Happens if Finasteride Gets Too Hot?

What exactly is the risk to a finasteride tablet exposed to heat greater than 86F? Does the heat change the chemical composition of the drug? My room where I store my finasteride tablets has been very hot this summer. Accidently, I left my container where the sun shines through as well. Should I get my prescription replaced, or is this no big deal?

Ideally, finasteride should be stored between 59 and 86 degrees F (15 and 30 degrees C), but I do not know if just exposing it to temperatures above or below that would degrade its chemical composition immediately. While I doubt that it would be less effective, if you are worried you should replace it to be safe.