Hemsley Rockvine Root Classic Formulas … Natural Herb Library

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Clears heat and resolves toxicity - San Ye Qing is used for sore throat, inflammatory swellings, pediatric febrile disorders, and other toxic-heat presentations.
Dispels wind and transforms phlegm - traditional use includes bronchitic cough, pneumonia-style heat-phlegm patterns, and certain convulsive or febrile pediatric complaints.
Invigorates blood and relieves pain - it is also used externally or internally for trauma, snakebite, fissures, and painful swellings.

Heat-toxin decoctions for throat swelling and pediatric fever - common folk and regional pattern of use.
Respiratory combinations with heat-clearing and phlegm-transforming herbs - traditional approach for bronchitic or pneumonic patterns.
External powders or poultices for trauma, bites, and toxic swellings - long-standing local-use direction.

Recent officially reviewed Chinese medical explanations describe San Ye Qing as bitter, slightly acrid, and cool, clearing heat and toxins, transforming phlegm, and relieving pain, with application to dysenteric, respiratory, pediatric febrile, and traumatic conditions.
Regional practice also preserves the synonym Jin Si Diao Hu Lu, which should be understood as the same medicinal identity here rather than as a separate herb.