Left Birth Control Pills in Car - less effective?

I live in Fayetteville North Carolina and i am on the birth control pill tri sprintec lo. I picked them up at about 2 in the afternoon on Wednesday and I left them in the hot car by accident until 2 or 3 the next day. It was about 90 degrees both days and i was jw if it would effect them at all being in the hot car for that long (even though it was through the nigh too and it cooled down.)
P.S. Plz write back asap because i am due to start the new pack on Tuesday and i need to b able to get new ones by then.

Hi Anonymous-

I asked a friend of mine who is a pharmacist about this, because I could not find good factual information. She suggests that while the pills are likely okay, there are no good studies on this so it is a good idea to use back up birth control for the rest of the month just to be safe.

Sometimes heat changes the chemical makeup of medications, which is why it is recommended to not expose them to humidity or temperature extremes. I hope this helps. I saw a lot of questions about this in my search, but all the answers looked like guesses to me.

Thanks for visiting the site and asking an interesting and helpful question. Good luck to you.