Hai Long (Pipe Fish)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Hai Long (Pipe Fish)?

  Commonly 3–9 g in decoction, or about 1–1.5 g taken as powder — sources consistently describe Hai Long as used in relatively small amounts, reflecting its status as a potent, costly animal-derived tonic rather than a bulk herb.

  Note: one consumer-facing source states a per-dose range of “1.5–3 g, up to three times daily” (roughly 4.5–9 g/day), which is broadly consistent with the 3–9 g decoction range above; we present the more consistently cited decoction/powder figures.

  Source: multiple online sources product reference. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Hai Long (Pipe Fish)?

  Hai Long is traditionally contraindicated in yin-deficiency patterns with heat (“effulgent fire”), in the presence of external pathogenic invasion (exterior conditions), and in pregnancy. As a warming yang tonic, it is not suited to heat-type or exterior presentations.

  • Sourcing/conservation (reference note) — Hai Long is a dried marine-animal product; the genus Syngnathus is documented in the pharmacological literature among endangered Chinese marine materia medica resources (see Research). This is a neutral sourcing disclosure, not a usage instruction.
  • Market authenticity (reference note) — because genuine dried pipefish is scarce and costly, species-identification research has been developed specifically to detect adulterant/substitute species in commercial Hai Long (see Research).

  Source: multiple online sources; conservation/authentication research (below). Reference disclosures, not usage instructions.

Chinese Herb Toxicity & Overdose

• No significant toxicity is documented at traditional doses. Hai Long is a dried marine-animal product with a long history of traditional use; available sources report no established toxic effects or overdose syndrome at customary dosage. As an animal-derived substance it carries a general allergenic/dietary-restriction consideration (not suitable for vegetarians/vegans) rather than a specific toxicity profile.

  Source: multiple online sources, which report no documented side effects at traditional dosage. Reference note, not a safety guarantee.

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 Hai Long (Syngnathus / Solenognathus pipefish)?

  Yes — preclinical antitumor research, species-authentication research, and documented conservation concern, but no human clinical trials found. The Chinese Pharmacopoeia records Syngnathus acus for both cancer and impotence, reflecting centuries of traditional use alongside newer laboratory findings.

  • Antitumor protein (preclinical) — a novel protein (“Syngnathusin”) purified from Syngnathus acus inhibited proliferation of A549 (lung cancer) and CCRF-CEM (leukemia) cell lines in vitro and induced apoptosis; in mice bearing transplanted S180 tumors, it produced dose-dependent tumor-growth inhibition (roughly 30%+) across a 10–90 mg/kg range. Cell and animal data only — not evidence of a clinical anticancer effect.
  • Species authentication (methods research) — a multiplex PCR method based on 12S mitochondrial DNA sequences was developed to distinguish the officinal pipefish species (Syngnathus acus, Syngnathoides biaculeatus, Solenognathus hardwickii) from common market adulterants, supporting quality control of commercial Hai Long.
  • Conservation status (reference) — a review of Chinese marine materia medica resources lists Syngnathus among roughly 92 endangered species used in Chinese marine medicine, alongside seahorse (Hippocampus) and pufferfish (Takifugu). Note: CITES Appendix II formally covers seahorses (Hippocampus spp.); pipefish (Syngnathus) is documented as an endangered TCM marine resource in this literature but is not itself a current CITES-listed genus — the two are sometimes conflated online. Reference fact, not a usage recommendation.

  No human clinical trials of Hai Long were located; evidence is preclinical (cell/animal) or methodological (species ID) only.

  Sources: PMID 22363219, PMC 3280537, DOI 10.3390/md10010035 (Syngnathusin antitumor protein, Marine Drugs 2011); PMID 28129724, DOI 10.1080/24701394.2016.1278538 (multiplex PCR pipefish species identification, Mitochondrial DNA Part A, 2018); PMID 26950133, PMC 4820300, DOI 10.3390/md14030046 (Chinese Marine Materia Medica Resources: Status and Potential, Marine Drugs 2016). Research context, not a therapeutic claim.

Chinese Herb Notes

• How is Hai Long different from Hai Ma (Seahorse), and what does it combine with?

  Hai Long and Hai Ma are closely related marine Kidney-yang tonics (both family Syngnathidae) with overlapping traditional uses for impotence and debility — Hai Ma (seahorse, Hippocampus spp.) is generally regarded as the stronger, more classic Kidney-yang tonic and is more often used alone or as the lead herb in kidney-tonic formulas, while Hai Long (pipefish, Syngnathus/Solenognathus spp.) shares the yang-tonifying action but is also specifically noted for reducing swelling and dissipating nodules.

  • Traditional combination — Hai Long with Da Zao (Fructus Jujubae, jujube) for abdominal masses and scrofula.

  Etymology: the Chinese name 海龙 (hǎi lóng) literally translates as “sea dragon,” referring to the fish’s elongated, armor-plated, dragon-like body (per this site’s own record).

  Note: this site’s own record lists Hai Long as entering the Kidney channel only; some published summaries additionally list the Liver channel. We follow this site’s Kidney-only channel entry pending owner confirmation.

  Source: multiple online sources; this site’s own record (channels, translation).

This herb is from an endangered/protected species and is illegal in the United States