About 3 times I've tried the sublingual method with the root powder (w/ Wow kava), each time using 2 tsp worth (1tsp at a time) under the tongue because I too was curious about this and was hearing rumors about it being stronger in effects. For one thing I can actually tolerate this method much better than the traditional drink way as far as taste goes which I found surprising, but all in all it wasn't anything to rave about unfortunately. Though I did this when I was still in the process of breaking through my RT so that most likely was a big factor involved but it could have also been that I wasn't using enough each time. Maybe 3 or 4 tsp would suffice better if you're willing to try.