Hai Ma (Sea Horse)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Hai Ma (Sea Horse)?

  Materia medica sources most often cite roughly 3–9 g in decoction, or about 1–3 g if taken as a fine powder — the powdered form is traditionally preferred given the herb’s cost and potency, and is sometimes steeped in wine. This is a historical reference range from published materia medica, not a current prescription.

  Note: Sources vary somewhat — some give a decoction range up to ~12 g and a powder dose as low as 1–1.5 g, while others cite 3–9 g decocted / 1–3 g powdered. We treat this as normal materia medica range variation rather than a substantive disagreement and present the more conservative, commonly repeated figures above.

  Source: multiple online sources; cross-checked against standard materia medica dosage conventions. Reference only — not a prescription; use of this CITES-listed, trade-restricted animal substance is a matter for a licensed practitioner and lawful sourcing.

Chinese Herb Contraindications & Cautions

• Is Hai Ma (Sea Horse) an endangered or trade-restricted species?

  Yes — every species in the genus Hippocampus (all seahorses) has been listed on CITES Appendix II since 2004, the first marine genus fully listed at the genus level, meaning international trade is legal but regulated and must be shown not to harm wild populations. Independent of CITES, the IUCN Red List classifies a number of the seahorse species most commonly traded for TCM (including H. trimaculatus and H. spinosissimus) as Vulnerable, with two seahorse species assessed as Endangered and many others Data Deficient.

  • Trade monitoring (reference note) — CITES parties recommend a 10 cm minimum size at harvest so seahorses have reached reproductive maturity; a 2023 U.S. market study found dried TCM-market specimens met this size threshold far more often than non-medicinal curio-market specimens, but also documented ongoing trade in Vulnerable species (see research, below).
  • Species substitution (reference note) — DNA-based identification of seahorses sold in TCM markets has found multiple species, including some not officially recognized as medicinal, mixed into commercial supply — a documented authenticity/sourcing issue rather than a safety one.

  Are there other cautions for Hai Ma?

  Traditional materia medica sources contraindicate Hai Ma in pregnancy and in patterns of yin deficiency with effulgent (empty) heat/fire, since its warming, yang-tonifying nature can aggravate heat signs. As an animal-derived, CITES-listed substance, professional guidance and lawfully sourced material are standard reference points rather than usage instructions.

  Source: CITES CoP12 (2002, effective 2004) genus-level Appendix II listing; IUCN Red List seahorse assessments (Project Seahorse / IUCN Seahorse, Pipefish & Seadragon Specialist Group); Boehm et al., PLOS ONE (2023), PMID 37788253, PMC 10547177, DOI 10.1371/journal.pone.0291874; Hou et al. (2018), PMID 27871217 (DNA barcoding of market seahorses); multiple online sources (pregnancy/yin-fire contraindications). Conservation status is a neutral reference fact, not usage guidance.

Chinese Herb Toxicity & Overdose

• No significant toxicity is reported for Hai Ma in the traditional materia medica or the modern literature reviewed at traditional reference doses. Dedicated toxicology studies are limited; as with other marine-animal substances, individuals with shellfish/marine-protein sensitivity should be aware it is an animal product. This is a general reference note, not a clinical safety guarantee, and is not usage guidance.

  Source: multiple online sources; no dedicated human toxicology studies were located in the research reviewed (below).

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for Hai Ma. Given its traditional blood-invigorating action, practitioner awareness is a reasonable precaution for patients on anticoagulant or antiplatelet therapy — this reflects the traditional action profile, not a demonstrated clinical interaction, and is flagged for practitioner confirmation rather than as usage instruction.

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 Ma (Hippocampus)?

  Yes — mostly preclinical/laboratory and conservation-focused research, with no robust human clinical trials identified. Reviews describe Hippocampus chemistry as dominated by amino acids/peptides, steroids (notably cholesterol), fatty acids (including EPA and DHA), and trace minerals, drawn from the several species used medicinally (chiefly H. kuda, H. trimaculatus, H. kelloggi, H. histrix, and H. japonicus).

  • Reproductive/preclinical — in male rats with medroxyprogesterone-suppressed fertility, Hippocampus comes extract was associated with improved sperm concentration, motility, and viability at tested doses, with only a non-significant trend toward higher testosterone and no adverse changes in serum biochemistry; animal study, not clinical evidence of efficacy in humans.
  • Chemical/pharmacological review — broader pharmacology reviews report preclinical anti-inflammatory, antioxidant, anti-fatigue, anti-tumor, and neuroprotective activity across various Hippocampus extracts and fractions; laboratory and animal findings, not human trial evidence.
  • Species identification and quality control — DNA barcoding (mitochondrial COI) has been used to identify seahorse species sold in TCM markets, finding multiple species — including some outside the officially recognized medicinal list — in commercial supply, underscoring an authentication/quality-control gap.
  • Conservation & trade — a molecular survey of the U.S. dried-seahorse trade found TCM-market specimens were dominated by H. trimaculatus, H. spinosissimus, and H. ingens (about 75% of samples combined), all IUCN-assessed as Vulnerable, and documented that most (but not all) TCM-market specimens met the CITES-recommended 10 cm minimum harvest size.

  Overall, human clinical evidence for Hai Ma’s traditional uses is essentially absent in the literature reviewed; supporting research is preclinical, and a meaningful share of the modern literature instead concerns species identification and conservation status.

  Sources: Cui et al., Frontiers in Marine Science (2021), DOI 10.3389/fmars.2021.774927 (distribution, chemistry, pharmacology review); Zhang et al., Chinese Herbal Medicine (2023), PMID 39072207 (chemical constituents, pharmacology, quality-evaluation review); rat reproductive study, PMID 37155542, PMC 10122950, DOI 10.5455/javar.2023.j661; Hou et al. (2018), PMID 27871217 (COI DNA barcoding of market seahorses); Boehm et al., PLOS ONE (2023), PMID 37788253, PMC 10547177, DOI 10.1371/journal.pone.0291874 (U.S. dried-seahorse trade, species/size composition). Research context, not a therapeutic claim.

Chinese Herb Notes

• How is Hai Ma different from other Kidney-yang tonics like Lu Rong or Ge Jie?

  Hai Ma is distinguished among the animal-derived yang tonics by pairing Kidney-yang/essence tonification with a blood-invigorating, mass-reducing action — most yang tonics (e.g. Lu Rong/Deer Antler, Ge Jie/Gecko) primarily replenish yang and essence, while Hai Ma’s traditional profile also covers blood stasis with abdominal masses and sores, and Kidney-deficiency wheezing.

  • Lu Rong (Deer Antler) — a stronger, more purely tonifying Kidney-yang/essence and blood tonic, without Hai Ma’s blood-stasis/mass-reducing indication.
  • Ge Jie (Gecko) — shares the Kidney-tonifying and wheeze-calming actions with Hai Ma but is more specifically associated with Lung-Kidney-deficiency asthma/wheezing and does not carry the traditional blood-invigorating, mass-reducing use.
  • Hai Ma — the combination of yang/essence tonification, blood-invigorating stasis-dispelling action, and wheeze-calming use in one substance is its distinguishing traditional profile.

  Source: comparative materia medica consensus across multiple online sources and the Cui et al. (2021) review (DOI 10.3389/fmars.2021.774927). Traditional differentiation, not treatment advice.

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