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Hops come from the large perennial vine Humulus lupulus . This plant is native to North America and Europe, but is cultivated in many other places.
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Melatonin is a hormone produced naturally in the pineal gland at the base of the brain. It is important in regulating sleep, and may play a role in maintaining circadian rhythm, the body ' s natural time clock.
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Valerian ( Valeriana officinalis ) is one of about 200 members of the Valerianaceae family. This plant is native to Europe and west Asia; it is naturalized throughout North America.
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Valerian is an herbal remedy derived from the dried roots of the valerian plant, Valeriana officinalis . The plant belongs to the Valerianaceae family.
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