Image of Hops retrieved from Science. How Stuff Works on May 31st, 2013.

Hops have a marked relaxing effect upon the central nervous system. They are used extensively for the treatment of insomnia. They will ease tension and anxiety, and may be used where this tension leads to restlessness, headache and possibly indigestion. As an astringent with these relaxing properties they can be used in conditions such as mucous colitis. They should, however be avoided where there is a marked degree of depression as this may be accentuated. Externally the antiseptic action is utilized for the treatment of ulcers.

Excerpt from page 102 of The Complete Illustrated Holistic Herbal

Hops, plant, herb, beverage, relaxant, astringent