Ju He (Citrus/Tangerine Seeds)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Ju He, and why is it fried with salt?

  3–10 g in decoction (Chen & Chen), commonly prepared by dry-frying the seeds with salt water before use. The salt-frying is the interesting part: salt is the flavour associated with the Kidney, and the recorded rationale here is that frying Ju He with salt directs its action to the Kidneys and increases its effectiveness for hernial disorder and testicular swelling and pain.

  • Decoction — 3–10 g, per the recorded range.
  • Salt-fried (yán zhì) — the standard preparation for this herb. It is the same processing logic applied to other lower-body herbs: salt as a guide downward. Recorded as classical processing method, not as a home preparation instruction.
  • Crushing — as with other hard seeds, the material is broken before decocting so that its constituents can be extracted; whole intact seeds give up very little.
  • In formula — in Ju He Wan the herb is the chief, which is unusual for a herb this specialised and reflects how precisely the formula is aimed.

  Source: Sacred Lotus sources & references (recorded dosage, the salt-frying note, and the Ju He Wan role, as held on file); cross-referenced against multiple online sources and materia medica consensus. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Ju He?

  No traditional contraindication is recorded for Ju He on this site, and none was found in the sources that could be verified. It is a neutral, food-derived seed used in modest doses, which puts it at the mild end of the qi-regulating group. The sensible cautions are contextual rather than pharmacological.

  • Qi or blood deficiency without stagnation — the general caution for moving and dispersing herbs. There is nothing to disperse, and dispersing herbs consume rather than build.
  • Testicular pain and breast lumps are signs that require assessment. This is a reference note about the setting, not about the herb: sudden testicular pain and any new breast lump are presentations for which prompt conventional medical evaluation is the appropriate step. The traditional indications are documented here as reference facts, not as instructions for use.
  • Pregnancy — no specific traditional prohibition is recorded for Ju He. Qi-moving herbs are conventionally used only under professional supervision in pregnancy.
  • Citrus allergy — an obvious practical point for a herb that is literally a fruit seed.
  • In the formula rather than the herb — Ju He Wan contains Hai Zao and Kun Bu, both seaweeds with substantial iodine content, which is a recognised consideration for anyone with thyroid disease. That is a fact about the formula, recorded neutrally.

  Source: Sacred Lotus sources & references (recorded cautions entry, and the Ju He Wan composition as held on file); category cautions per materia medica consensus, cross-referenced against multiple online sources. Reference note, not a safety guarantee.

Chinese Herb Toxicity & Overdose

• Is Ju He toxic?

  No. The entry held here reads “none noted,” the herb is not classed among the toxic materia medica, and no poisoning reports or organ-toxicity findings for tangerine seed were found in the sources that could be verified. It is a by-product of a common food fruit, eaten inadvertently by most people at some point.

  • What makes it bitter — citrus seeds are the richest part of the fruit in limonoids, the intensely bitter triterpenoid group that includes limonin and nomilin. These are the compounds responsible for the delayed bitterness of citrus juice, and they are the reason the seed tastes as it does. They are well characterised and are not regarded as toxic constituents at dietary or medicinal exposures.
  • The usual caveat — no clinical safety study of Ju He exists in the literature that could be confirmed. Absence of reported toxicity is not the same as a formal safety evaluation.

  Source: Sacred Lotus sources & references (recorded toxicity entry, “none noted”); limonoid chemistry per PMID 27845763, PMC 6273274, DOI 10.3390/molecules21111530. Neutral reference facts — not a safety guarantee.

Herb-Drug Interactions

• Does Ju He interact with medications, the way grapefruit does?

  There is no documented clinical herb–drug interaction for Ju He, and the grapefruit effect does not transfer to it automatically. The grapefruit interaction is driven by particular furanocoumarins in the fruit and peel — chiefly bergamottin and 6′,7′-dihydroxybergamottin, which inactivate intestinal CYP3A4 — and by naringin’s effect on the OATP1A2 transporter. Both vary enormously between citrus species, and mandarin-group citrus sits at the low end.

  • Species-level evidence — a comparison of twelve citrus extracts against CYP2C9, CYP2D6 and CYP3A4 found grapefruit by far the strongest inhibitor while Citrus unshiu (satsuma mandarin, a tangerine-group citrus) was relatively weak, with inhibition tracking naringin and furanocoumarin content.
  • What has not been measured — no enzyme-inhibition study and no human pharmacokinetic study has been performed on Ju He itself. Everything above is inference from the species, not a direct finding for the seed.
  • Practical position — anyone taking a narrow-therapeutic-index medicine cleared by CYP3A4 should mention any citrus-derived herbal product to their prescriber. Precautionary, based on constituent class, not on a demonstrated interaction.

  Sources: PMID 18451520, DOI 10.1248/bpb.31.925 (comparative CYP inhibition across twelve citrus extracts including satsuma mandarin); PMID 28749005, DOI 10.1111/jcpt.12595 (bergamottin and 6′,7′-dihydroxybergamottin distribution across citrus flesh and peel); PMID 17301733 (naringin and OATP1A2); PMID 23297175, DOI 10.1136/bmj.f1 (grapefruit–drug interaction mechanisms). Reference context only — not medical advice. Flagged for practitioner confirmation.

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 Ju He (Semen Citri Reticulatae)?

  Yes — and it has gone in a direction nobody would predict from the traditional indication. The modern literature on tangerine seed is almost entirely about ageing and neuroprotection, not about hernia or breast masses. There are no clinical trials, and no laboratory study of the traditional indications could be verified.

  • Lifespan and stress resistance (worm model) — a 2022 study in a gerontology journal reported that an ethanol extract of Citri Reticulatae Semen extended the lifespan of Caenorhabditis elegans by around 19% without loss of health span, improved resistance to heat, oxidative and bacterial stress, and improved pathology in transgenic worm models of Parkinson’s and Huntington’s disease. Knocking down four autophagy genes abolished the effect, pointing to autophagy induction as the mechanism.
  • Alzheimer’s models — a 2024 study reported that the same kind of extract protected PC12 cells from amyloid-beta-induced apoptosis by activating autophagy, bound amyloid-beta directly in a biophysical assay, reduced amyloid-beta pathology in transgenic worms, and improved cognitive measures and amyloid burden in a triple-transgenic mouse model. A 2026 follow-up attributed similar effects to modulation of the PI3K/Akt/FoxO1 pathway with reduced neuroinflammation. Cell and animal work only.
  • Constituents — citrus seeds are the fruit’s richest source of limonoids. A widely cited review covers the chemistry and pharmacology of this compound class, and limonin purified from citrus seeds has been studied for hepatoprotection in a paracetamol liver-injury model, where the authors used liposomal encapsulation to improve its poor solubility. Preclinical.
  • Processing — a 2025 Chinese pharmacognosy study examined the colour change and component transformation that occur when Citri Reticulatae Semen is processed — the modern analytical counterpart of the traditional salt-frying step.

  Honest summary: the traditional indication for this herb — groin and breast pain — is untested by modern research. The neuroprotective literature is real, reasonably substantial for a minor herb, and entirely preclinical; it does not demonstrate clinical efficacy for anything and is reported here as context. Note also that the 2024 Alzheimer’s paper carries a published corrigendum.

  Sources: PMID 35788666, DOI 10.1093/gerona/glac136 (lifespan, stress resistance and neuroprotection via autophagy in C. elegans); PMID 38526283, PMC 11090445, DOI 10.4103/NRR.NRR-D-23-00954 (autophagy activation against amyloid-beta in cells, worms and 3×Tg mice), with corrigendum PMID 38989935; PMID 41954172, DOI 10.1002/mnfr.70452 (PI3K/Akt/FoxO1 pathway, neuroinflammation); PMID 27845763, PMC 6273274, DOI 10.3390/molecules21111530 (chemistry and pharmacology of citrus limonoids); PMID 38471575, DOI 10.1016/j.fitote.2024.105899 (limonin from citrus seeds, hepatoprotection in a paracetamol model); PMID 40461194 (colour–component correlation in processed Citri Reticulatae Semen). Research context, not a therapeutic claim.

Chinese Herb Notes

• How is Ju He different from Chen Pi, Ju Hong and Qing Pi?

  They are all the same plant — the tangerine, Citrus reticulata — and they differ by which part you take and when you pick it. Ju He is the only one that is a seed, and it is the only one that is not primarily a digestive or cough herb. This is the same map built from the Ju Hong side of the family; here is Ju He’s place in it.

  From the tangerine (Citrus reticulata):

  • Chen Pi (陈皮, Pericarpium Citri Reticulatae) — the whole ripe peel, dried and aged; spicy, bitter, warm, aromatic; Lung, Spleen, Stomach. The everyday qi-regulator and damp-transformer.
  • Ju Hong (橘红, Exocarpium Citri Rubrum) — only the outermost coloured layer of that peel; spicy, bitter, warm; Lung, Stomach. Drier and more aromatic, aimed at cough with copious phlegm.
  • Qing Pi (青皮, Pericarpium Citri Reticulatae Viride) — the peel of the unripe green fruit; bitter, spicy, warm; Gallbladder, Liver, Stomach. Harsher and more Liver-directed, for rib-side pain, breast distention and hard accumulations.
  • Ju He (this herb, Semen Citri Reticulatae) — the seed; bitter, neutral. The odd one out: not warm, not aromatic, not a peel, and directed at the groin and breast rather than the chest and middle burner.

  From the bitter orange (Citrus aurantium): Zhi Shi (枳实, the immature whole fruit; bitter, spicy, slightly cold; Large Intestine, Spleen, Stomach) and Zhi Ke (枳壳, the more mature fruit; bitter, cool; Spleen, Stomach) — a different species entirely, and the same immature-versus-mature pairing that Qing Pi and Chen Pi have. Zhi Shi also appears in Ju He Wan.

  From the citron (Citrus medica): Fo Shou (佛手, finger citron) and its round-fruited relative Xiang Yuan (香橼) — gentle, fragrant Liver-qi spreaders.

  Closest to Ju He in indication is not another citrus at all but Qing Pi, which shares the Liver-channel, breast-and-flank territory. The distinction: Qing Pi is warm, harsh and breaking, and works on distention and hard masses in the flanks and breast; Ju He is neutral and works lower, on the groin and testes. Practitioners commonly use them together where the pattern spans both.

  What is Ju He Wan?

  Ju He Wan (Tangerine Seed Pill) is the formula named after this herb, and it is the reason Ju He has a place in the materia medica at all. The recorded pattern is hernial disorder from damp-cold invading the Liver channel: testicular or scrotal swelling and pain, sometimes hard or mass-like, radiating toward the lower abdomen, worse for cold, with a white greasy tongue coat and a deep wiry pulse. Ju He is the chief, moving qi and dispersing clumps; Chuan Lian Zi and Mu Xiang move qi alongside it; Tao Ren and Yan Hu Suo address the blood-stasis component; Rou Gui warms the Liver and Kidney channels; Zhi Shi and Hou Po break up qi stagnation; and Hai Zao with Kun Bu — the classic seaweed pair — soften the hardened mass. (Traditional formula context, not treatment advice.)

  Identity note flagged, not corrected: the channel field on this record reads “Unknown.” Published materia medica consensus assigns Ju He to the Liver channel, and the Ju He Wan record held on this site says so explicitly — describing the herb as entering the Liver channel specifically. The Chinese characters (橘核) and the tone-marked pinyin are also absent from this record while every sibling citrus herb has them. These identity fields have been left exactly as held and are flagged here for review rather than changed.

  Source: Sacred Lotus sources & references (the herb records for Chen Pi, Ju Hong, Qing Pi, Ju He, Zhi Shi, Zhi Ke and Fo Shou — species, plant part, nature, flavour and channels — and the Ju He Wan formula record, as held on file); cross-referenced against multiple online sources and materia medica consensus (Bensky; Chen & Chen).