It's interesting that you brought this up right now. My wife, who is a former pharmacy technician, was sharing with me the other day that Oklahoma is also cracking down on pain medication abuse. There have been some recent high profile news articles about drug shopping and other forms of abuse. Here's a link to an article about the local crackdown. This may be why you are noticing the change right now. Officials change the rules for prescription pain killers | KFOR.com