Nah it works SLed, couldn't tell you the why & how behind it though. I just did it a couple days ago with 2 .5mg Xanaxs, it worked quite well to speed the effects. I guess that would be the reason for shorter duration, it hits you faster & a little harder (although maybe it seemed more efficient because of the faster onset) SLed. So the old rule about different ROAs producing different durations most likely holds true here. Tbh though, I actually didn't notice any difference in duration between oral & SL Xanax.