E Guan Shi (Tip of Tubular Stalactites)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of E Guan Shi?

  Roughly 9–15 g in decoction, or a smaller amount as fine powder (cited across sources as roughly 0.3–15 g) or incorporated into pills. As a hard mineral, it is traditionally crushed and decocted first — separately, before the other herbs are added — when used in a decoction.

  Processing changes its traditional emphasis more than its dose range: the raw mineral is favored for warming the Lung and transforming phlegm, while calcined (煖) or vinegar-quenched (邪渎) preparations are traditionally considered stronger for Kidney-yang warming.

  Source: cross-referenced Chinese materia medica dosage/processing references (see Actions). Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for E Guan Shi?

  E Guan Shi is contraindicated in excess-heat patterns and in yin deficiency with effulgent (exuberant) fire — consistent across the Chinese materia medica sources reviewed, this reflects its warm, yang-tonifying nature, which can aggravate heat-type presentations.

  • Mineral/digestive caution (general) — as with other hard mineral Kidney-yang tonics, cautious, professionally supervised use is advised for prolonged courses, following the general materia medica principle that heavy mineral substances can be taxing on digestion.
  • Identity caution (reference note) — because E Guan Shi and Zhong Ru Shi are closely related and sometimes loosely distinguished in trade, sourcing from a reputable supplier matters for confirming which grade/preparation (raw, calcined, or vinegar-quenched) is actually being dispensed.

  Source: Chinese materia medica cautions (see Actions). Reference note, not a safety guarantee; use under a qualified TCM practitioner.

Chinese Herb Toxicity & Overdose

• Low. E Guan Shi is classified as non-toxic (无毒) in the Chinese materia medica sources reviewed, consistent with its identity as a calcium-carbonate mineral (with trace iron, magnesium, and other elements) and with the low-toxicity profile reported for the closely related mineral Zhong Ru Shi. No dedicated toxicological studies of E Guan Shi itself were located.

  Source: Chinese materia medica non-toxic classification (see Actions). Reference note, not a safety guarantee.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for E Guan Shi. As a calcium-carbonate-based mineral, the general precautions that apply to calcium-carbonate/antacid-type substances are a reasonable, precautionary consideration — for example, spacing dosing from tetracycline or fluoroquinolone antibiotics, bisphosphonates, thyroid hormone, or iron supplements, where calcium can reduce absorption. This is extrapolated from its mineral composition, not a demonstrated clinical interaction for this herb specifically. (Flagged for practitioner confirmation.)

Chinese Herb Notes

• How is E Guan Shi different from Zhong Ru Shi?

  E Guan Shi and Zhong Ru Shi are the same mineral material, Stalactitum — E Guan Shi is specifically the fine, slender tip (“goose-tube”) portion of a tubular stalactite, while Zhong Ru Shi refers to the stalactite more broadly. The two are closely related rather than fully interchangeable in how the site (and the broader materia medica) categorizes them: Sacred Lotus places Zhong Ru Shi under “Herbs that Relieve Coughing and Wheezing” (entering Lung, Kidney, and Stomach) and E Guan Shi under “Herbs that Tonify Yang,” reflecting a traditional distinction in which the slender tip portion is regarded as more concentrated in its Kidney-yang-tonifying action.

  • Zhong Ru Shi — broader stalactite material; Lung-cold cough/wheeze, Stomach-cold acid regurgitation, and lactation; enters Lung, Kidney, and Stomach.
  • E Guan Shi — the tip/slender variety; traditionally read as more strongly Kidney-yang warming (impotence, spermatorrhea, cold low-back/knee pain), alongside the shared Lung-warming and lactation-promoting uses.

  A minority of the Chinese materia medica sources reviewed also record an alternate source for E Guan Shi: the calcified, tube-like skeleton of certain reef coral species, collected and processed the same way as stalactite tips. We could not independently confirm this coral-origin claim against an authoritative pharmacopeia entry, so it is noted here as a documented but unverified alternate identity — not a substitution instruction.

  Note: the local database records E Guan Shi as entering only the Lung channel; the Chinese materia medica references consulted (independently, and consistently with Zhong Ru Shi’s own Sacred Lotus sources & references) instead give Lung, Kidney, and Stomach. Given the herb’s primary traditional action here is Kidney-yang tonification, the wider Kidney/Stomach channel entry seems consistent with the sources reviewed, but our Lung-only channel field is left unchanged pending owner review.

  Source: Chinese materia medica cross-references (see Actions); Sacred Lotus category/channel comparison against zhong-ru-shi-stalactite-calcite.