Quantifying the Med Reconciliation problem

I've read in several studies that Medication Reconciliation processing adds a significant amount of burden to nurse workload - both at admission as well as throughout the transfer process. I've seen quite a range but don't have confidence in what I've read.

I'd be interested in the experience of the field of what impact this really has (in extra minutes). So how about a quick poll...

How long does it take you (in what unit)?
What have you done to minimize the impact or streamline the process?

Thanks