Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Andrographis paniculata has a long history in traditional medicine systems, especially in Asia, for treating infectious and contagious diseases, such as the common cold, influenza, and upper respiratory tract infections. In recent decades, scientific research has investigated its antiviral, antibacterial, and immunomodulatory properties. Several randomized controlled trials and meta-analyses have demonstrated that standardized extracts of Andrographis (often in the form of Kan Jang or similar preparations) can reduce the severity and duration of symptoms associated with acute respiratory tract infections. Laboratory studies suggest that the active compound, andrographolide, may inhibit viral replication and modulate immune responses. However, most clinical studies focus on mild to moderate infections, particularly upper respiratory illnesses like colds and flu, rather than more serious contagious diseases. Evidence supporting its efficacy for other contagious diseases (such as tuberculosis, hepatitis, or severe viral infections) is limited or lacking. Overall, while there is moderate scientific support for the use of Andrographis paniculata in managing symptoms of common contagious respiratory diseases, more rigorous research is needed to confirm its effectiveness and safety for a broader range of infectious conditions.

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