FYI; my local clinic alerted me to this a week ago, and I duly switched to something else.
http://health.msn.com/health-topics/sexual-health/birth-control/pfizer-recalls-1-million-packets-of-birth-control-pills-1 Edit to add: The pills in their article picture appear to be ortho tricyclen, not Lo/Ovral. Just point of fact.