Evidence supporting the use of: Forsythia
For the health condition: Colds (with fever)

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Forsythia suspensa, commonly known as forsythia, is a traditional medicinal herb used extensively in Traditional Chinese Medicine (TCM). In TCM, forsythia is often combined with other herbs (such as Lonicera japonica, or honeysuckle) in classic formulas like Yin Qiao San to treat colds and influenza, especially those presenting with fever and sore throat. The rationale behind its use is based on the TCM concepts of "clearing heat" and "detoxifying," which correspond to reducing fever and combating pathogens.

Scientific studies have begun to explore Forsythia's pharmacological properties. Laboratory research indicates that Forsythia contains various bioactive compounds, including lignans and phenylethanoid glycosides, which exhibit anti-inflammatory, antibacterial, and antiviral effects in vitro and in animal models. However, robust human clinical trials directly supporting its efficacy for treating colds (with fever) are limited and often involve multi-herb formulas rather than Forsythia alone. Thus, while there is some preclinical evidence supporting its mechanism of action, the majority of its use for colds with fever is justified by traditional and historical use rather than high-quality clinical evidence.

In summary, Forsythia's use for colds with fever is primarily rooted in traditional medicine, with some preliminary scientific evidence that is not yet conclusive. Its established role in TCM supports a moderate evidence rating, but further clinical research is needed to validate its effectiveness in contemporary medical practice.

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