Parts of the valerian plant, including its root, are used as a supplement and are available in capsules, tea, and more. One of the most popular uses for valerian root is to promote better sleep.

Valerian root is also commonly used as a sleep-promoting ... One older study in humans compared the effects of a passionflower tea with those of a placebo tea made from parsley leaves.

The type of tea you drink and its ingredients determines whether it makes you sleepy or gives you a boost of energy. Herbal teas like chamomile, valerian root, and Sleepytime tea are pretty well ...