Fructus Viticis(màn jīng zi) is the dried ripe seed of the plant Vitex trifolia, also known as the Chinese chaste tree, which belongs to the family Lamiaceae. This herb has been used extensively in traditional Chinese medicine (TCM) for its various health benefits.
In TCM, màn jīng zi is associated with the liver and gallbladder meridians. It is believed to have properties that can clear heat, expel wind, relieve itching, and calm the liver. The herb is commonly used to treat headaches, especially those caused by liver fire or liver wind, dizziness, red eyes, and eye pain. It is also used for treating symptoms of wind-heat exterior conditions such as fever, sore throat, and colds and flu.
The active compounds in màn jīng zi include iridoid glycosides, flavonoids, and volatile oils. These constituents are thought to contribute to its therapeutic effects. However, like other herbs, it should be used in proper dosages and under the guidance of a trained practitioner to avoid potential side effects and interactions with other medications.