Personally, I've noticed a significant drop in the potency of generic xanax brands issued by US pharmacies in the past few years. I don't get it since we're supposed to have the some of the tightest regulations here.
Recently, I prefer my Indian generics, which seems counter-intuitive.
I've noticed murmurs of similar opinions in threads of varied topics and so I'm starting this one to see if anyone has a similar opinion/experience or concrete facts on the matter.
Disclosure: I haven't done any research into it outside of the forum. Not sure what the FDA, DEA, big pharma, et al are up to in the slightest.
I have head (by way of mouth, not the most reliable source) that in the US generics are allowed to contain up to 15% less active ingredient than brand name.
Here's my personal history for the past few years (in 2011 I was w/o insurance)
2009 - .25 & .5mg /can't recall the generic name but they were light blue or pale peach // effective as expected
2010 - .25 & 1mg /again no generic name recall but the 1mg were orange and oval // almost as effective as expected
2012 - .5mg purepac scored peach; 1mg purepac scored light blue // both weaker than expected