FAQ
Frequently asked questions
Disclaimer: This page is for historical and cultural education only and is not medical advice. References to traditional use describe what historical sources and classical texts record or what is traditionally believed — they are not claims that a product treats, cures, or prevents any disease, and they have not been evaluated by the U.S. Food and Drug Administration or any other regulator. Consult a qualified physician with any health questions.
Why does this site say "traditionally believed" or "classical texts record" instead of describing what a product does?
Because that is the accurate claim. This site describes historical and cultural belief and documentation, not clinical evidence. Any statement about what a formula is traditionally used for is phrased as a historical or cultural fact — what people believed or what a text records — never as a present-tense medical claim like "treats" or "cures." See the full disclaimer on the About page.
Why do some names have several different English spellings?
Old trading houses and their products were transliterated long before today's standard pinyin existed, so the same Chinese name can appear in several historical or regional English forms. Guangyuyuan (广誉远), for example, also appears as "Guang Yu Yuan" or the older "Kuang Yu Yuan"; its predecessor house Guangshengyuan (广升远) appears as "Guang Sheng Yuan" or "Kuang Sheng Yuan." Angong Niuhuang Wan (安宫牛黄丸) also appears as "An Gong Niu Huang Wan" or the older "An Kung Niu Huang Wan" — the last of these still shows up in searches from Indonesia today. This site tries to note the major variants on each page rather than assume readers only search one spelling.
Is this the official website of Guangyuyuan, Pien Tze Huang, or Tong Ren Tang?
No. This site is independently run, is not affiliated with any of the brands it discusses, and does not sell anything. See About This Site.
Does this site say where to buy anything?
No. This site does not list retailers, does not link to any storefront or affiliate program, and does not judge whether a specific third-party listing is genuine. A historical export record or a brand's own claim of overseas distribution is not treated as proof of current sales.