Effifcacy of expired birth control pill, Alesse

I have a 28 day pack of Alesse with 11/2012 as its expiration date. I'm curious to know whether it's as effective 2.5-3 months after the expiry date stamped on the bubble pack, or if that is just a precautionary date put forth for the pharmacies.

[Arti Sharma, M.D.]

Hi there,
The efficacy of the pills is doubtful if used beyond the expiry date. Expiry date means that the pills will not be effective after that day and can result in pregnancy. It is better to avoid using these expired pills. Buy a new pack if you want to start taking pills. Do keep me posted.
Best luck and regards!