Evidence supporting the use of: Rhemannia
For the health condition: Hangover

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Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Rehmannia (Rehmannia glutinosa) is a traditional herb widely used in Chinese medicine, primarily for its effects on the liver, kidneys, and as a general tonic. Its use for hangovers comes primarily from traditional practices rather than robust scientific evidence. In Traditional Chinese Medicine (TCM), Rehmannia is believed to "nourish yin" and "cool the blood," properties sometimes invoked for symptoms associated with alcohol overconsumption such as thirst, headache, and malaise. Historical TCM texts may include Rehmannia as part of larger formulas to help restore balance after excessive drinking, but it is not a primary or standalone remedy for hangovers in most classic sources.

From a scientific perspective, there is minimal direct research linking Rehmannia to hangover treatment or alcohol metabolism. Some studies suggest it has antioxidant and hepatoprotective properties, which theoretically could support liver function after alcohol intake, but these effects have not been specifically validated for hangover relief in clinical trials. Modern herbal hangover remedies from East Asia sometimes include Rehmannia among other herbs, but the rationale is based on traditional use rather than scientific validation. Thus, its reputation for hangover support is grounded more in custom than in empirical evidence.

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