Hong Fen

Hydrargyri Oxydum Rubrum

Red Mercuric Oxide

Topical

About this herb

A mercury-containing compound used historically only in topical, carefully controlled amounts; internal use is unsafe and avoided in modern practice.

PinyinHong Fen

Chinese红粉

Latin (pharmaceutical)Hydrargyri Oxydum Rubrum

EnglishRed Mercuric Oxide

CategoryTopical

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This entry is a plain-language reference, not a guide to diagnosis or treatment. Herb names, properties, and categories can vary between texts and traditions — always confirm with a licensed practitioner before using any herb.