Can I Leave Propecia in Hot Temperature Weather and Will It Be Effective?

I realize this subject has been asked about before, but the specific answer I need hasn’t been given. I live in a hot country and it is almost always above 30 degrees Celsius! Walking to the car park after buying Propecia at the mall will expose it to high temperatures for a few minutes at least (if you have a car)!
Is it reasonably safe for short periods of time (minutes, not hours)? If not, how would these pills, or any medication which needs a correct temperature, ever work well in hot countries, where there is usually a good chance they will be exposed to high temperatures for short periods point?

I believe the manufacturer recommend that you store it below 86 degrees F (30 degrees C). But brief or short exposure to higher temperature should be fine. This applies to most drugs in general.