Synopsis

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

Baphicacanthus cusia, also known as Isatis indigotica or Qing Dai, has a long history of use in Traditional Chinese Medicine (TCM), particularly for conditions involving throat inflammation, sore throat, and infections such as strep throat (caused by Streptococcus pyogenes). The plant is thought to "clear heat" and "detoxify" the body, and its leaves and roots are commonly included in herbal formulas aimed at treating respiratory and throat infections.

Scientific evidence supporting its direct use for strep throat in humans is limited. Some in vitro studies and animal experiments suggest that extracts of Baphicacanthus cusia have antibacterial and anti-inflammatory properties, and may inhibit certain pathogens, including Streptococcus species. However, these findings have not been consistently translated into well-controlled clinical trials in humans. Most of the published research focuses on the broader antimicrobial and antiviral effects of related species or herbal combinations, rather than Baphicacanthus cusia alone or specifically for strep throat.

In summary, the use of Baphicacanthus cusia for strep throat is primarily justified by tradition and historical practice in Chinese medicine, with some preliminary scientific indications of potential efficacy but insufficient high-quality clinical evidence to strongly support its use for this specific condition.

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