Had my first experience with Kava last night. It was with Kava Supreme with an Aluball, and I thought I took it very easy since it was my first time. Had about 200 ml total of what I think was fairly weak grog. I felt nice and relaxed when I went to bed, but could not fall asleep for several hours. Once I did, I had an extremely restless night and woke up early. This morning I woke up with bad heartburn/gas pockets that still hasn't gone away. Makes me gun shy to do it again. Is this common?
Kava can keep you up at night, especially if you drink some too close to bedtime or if it's a new kava you aren't used to. There can also be an effect depending on the last time you had an alcoholic beverage but if you don't drink ignore that part. Finally, some people, a small percentage, get the opposite of the usual effects from kava, e.g. a heady kava will make them couchlocked and a heavy kava makes them wide awake, possibly even jittery or anxious or worried. It happens enough we should all be aware of it and consider the possibility, but also the relatively low probability.
As for the candies, they are fantastic, but I'm guessing they'd be utter crap for sleep, but that is not what they were designed or intended for. What they will do is taste good and make you feel mildly nice (or nicely mild) for a while, and slightly calmer. They have a soothing effect, yes, but no sedative effect.