Ive tried Kava in the powdered form where you mix it with water, its very hard to drink due to the taste, i only had a little and i had the best nights sleep ever, it gives a feeling of relaxation, a little like when you start to drink alcohol and you feel it just kicking in. The capsuals done absolutly nothing for me even at double the recomended dosage.
As for the other stuff, i have tried moslty every herbel remedy people have mentioned on here out of curiosity but they done nothing, thats not to say they wont work for you.
But Kava wins it for me, its the only one that made anoticble diffrence.