Well I've been experimenting with herbal solutions for a wide variety of ailments for quite some time and for a while even mixed some of them for various enhancements. (not a thing to be undertaken lightly, it's somewhat like eating random herbs in Oblivion except the damage incurred to your body is quite real). Some of them work quite well when you find the right dosage for your weight and reaction. Anyway from personal experience I would not recommend Valerian, main use that I've found for it is to put someone down who had a trauma or a highly stressful event. As a sleeping agent it feels like being knocked out with a club and makes you really slow.