Synopsis

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

Luo San (also known as "luosan" or "罗散") is an ingredient referenced in certain traditional Chinese medicine (TCM) texts, primarily as a topical formula for stopping external bleeding. Its use is justified by longstanding tradition rather than modern scientific validation. Historical records and TCM materia medica mention Luo San as a hemostatic powder, often applied to wounds, cuts, or other external injuries to arrest bleeding. The mechanism of action, according to traditional theory, involves astringent and absorptive properties that help coagulate blood and promote tissue healing. There is some anecdotal evidence reported in classical medical literature and case studies, but no robust, peer-reviewed clinical trials or pharmacological studies in the modern biomedical literature substantiate its efficacy or safety. Therefore, the rating for evidence is moderate (2 out of 5), reflecting a basis in traditional use with limited direct observational data, but a lack of rigorous scientific evaluation. Luo San is still used in certain regions as part of folk remedies, but practitioners should exercise caution due to the absence of standardized quality control and clinical validation.

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