Hu Po (Amber)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Hu Po, and is it decocted?

  1.5–3 g of the powder, taken separately — not decocted. As a resin, Hu Po is not made into tea; it is ground to a fine powder and swallowed directly or added to pills, taken apart from the decoction.

  Source: owner’s Five Branches notes (“smash to powder and swallow; don’t make tea”); standard materia medica ranges. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions or contraindications for Hu Po?

  Avoid Hu Po where there is no blood stasis and urination is already frequent, and use it with care in Yin deficiency with heat. Because it is a heavy, settling substance taken as powder, it is not intended for large doses or prolonged use, which may burden the Stomach qi.

  Source: owner’s Five Branches notes (contraindication: Yin deficiency with heat); Calm Spirit category cautions.

Chinese Herb Toxicity & Overdose

• Low at normal powdered doses. Hu Po is a fossil tree resin (amber) with no significant toxicity reported at the small doses used; it is nonetheless taken in modest amounts and not long term. As a fossil resin, its toxicological literature is limited — absence of reported toxicity is not the same as proven long-term safety.

  Source: materia medica consensus; no toxicity signal in the reviewed research. Fossil-resin substance — modern safety data are sparse.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented. In vitro, succinic acid (a principal component of amber) inhibited human liver CYP3A4 (non-competitively) and CYP2D6 and CYP2C9 (competitively), suggesting a theoretical potential to affect drugs metabolized by these enzymes. (Flagged for practitioner confirmation — this is a laboratory finding on an isolated constituent, not a demonstrated clinical interaction.)

  Source: PubMed 33327821 / PMC 7751394 (succinic acid CYP450 inhibition, human liver microsomes in vitro; Pharm Biol 2020).

Western / Biomedical Research

Chinese Herb Clinical Studies & Research

Provided as research context — a summary of published biomedical study, not a therapeutic or medical claim.

• Is there modern research on Hu Po (amber, Succinum)?

  Limited — Hu Po is a fossil resin, so modern pharmacology is sparse and mostly preclinical. Its best-characterized component is succinic acid (roughly 3–8% of amber). In a vascular-injury model, an ethyl-acetate extract of succinum improved learning and memory in carotid-artery-ligation rats and reduced apoptosis of HT22 hippocampal cells via the GSK3β/β-catenin pathway. Separately, succinic acid inhibited CYP3A4, CYP2D6, and CYP2C9 in human liver microsomes in vitro. Human clinical evidence is lacking.

  Sources: PubMed 35784758 (succinum, cognitive impairment & HT22 apoptosis, Front Pharmacol 2022); PubMed 33327821 / PMC 7751394 (succinic acid CYP450 inhibition, Pharm Biol 2020). Research context, not a therapeutic claim.

Chinese Herb Notes

• How does Hu Po compare to other spirit-calming substances, and how is it combined?

  Among the anchor-and-settle spirit substances, Hu Po is distinguished by also invigorating the blood and promoting urination. Zi Shi Ying, Zhu Sha, Zhen Zhu, and Hu Po all treat palpitations and emotional distress, but Hu Po alone moves blood and dissipates stasis (which aids the Heart) and opens painful urination, so it is chosen when spirit disturbance is joined by blood stasis or urinary difficulty.

  Representative combinations:

  • With Shi Wei — for bloody, painful urinary dribbling (xue lin).
  • With blood-invigorating herbs — for amenorrhea and fixed abdominal masses from blood stasis.
  • With other spirit-calming herbs (e.g. Zhu Sha, Suan Zao Ren) — for palpitations, insomnia, and fright.

  Contrast: Zhen Zhu is favored for seizures and convulsions from high fever; Zi Shi Ying is the economical everyday choice for palpitations from ascendant Liver yang or Heart fire.

  Source: owner’s Five Branches notes (Bensky chapter comparison & combinations).