Well the consensus of 4 Pharamcists (one who just took his law exam) is that its a 1 year RX. Although, they did hesitate...hahah!
Well, yeah - they're one year RXs, if they're non-controlled, but I'm trying to find the CFR that says it's one year. I'm still digging - I think that Federal Regulations for this stuff should be controlled - it's putting me to sleep.