It's usually sold as herbal tincture. Otherwise root. You can make it into tea, or put it in tea. Used for sleeping, not sure what else.. Anxiety, it has a claming quality. It is a powerful herb, so make sure to look it up first, and note what you meds or other stuff you already take. You can buy it at health food stores, or somewhere that sells herbs.. It doesn't taste that good, but it's not too bad either.