Compound Monograph

Jujuboside B

Jujuboside B is a dammarane-type triterpene saponin from the seed of sour jujube (Ziziphus jujuba var. spinosa, suan zao ren) — a minor sibling of the better-studied jujuboside A. Its thin but coherent preclinical profile spans anti-seizure/neuroprotective (AMPA/glutamate, daf-16/sir-2.1), hepatoprotective (sepsis), anti-inflammatory (HMGB1) and antiplatelet activity, with no human trials of the isolate. The herb's sedative reputation belongs to the whole seed, not this compound.

Classification

Jujuboside B is a triterpenoid saponin (dammarane-type), part of the terpenoids class. The largest class of plant compounds, built from five-carbon isoprene units — the essential-oil aromatics, resins, bitter principles, saponins, and plant sterols.

Where Does It Come From? (4)

Jujuboside B is a naturally occurring triterpenoid saponin (dammarane-type), found in Sour Jujube seed and 3 other sources. It is flagged as moderately toxic.

JujubeSour dateSour Jujube seed Zizyphus Ziziphus spinosa

Pharmacology & Research

Jujuboside B is a dammarane-type triterpene saponin of sour-jujube seed (Ziziphus jujuba var. spinosa, suan zao ren) — the classic TCM sedative herb — and a minor sibling of the better-studied jujuboside A. The load-bearing honesty point: the seed’s sedative/hypnotic reputation belongs to the whole seed/extract, where jujuboside A and spinosin (not B) are the studied actives and quality markers. Jujuboside B’s own literature is thin but coherent — anti-seizure/neuroprotective, hepatoprotective in sepsis, anti-inflammatory and antiplatelet — and entirely preclinical, with no human trials 9Reference 92023Advances in the pharmacological effects of jujuboside BView study →.

What the evidence supports
  • A modest CNS-excitability signal: jujuboside B suppressed febrile seizures by dampening AMPA-receptor glutamatergic activity, and protected against amyloid-β toxicity via daf-16/sir-2.1 2,3Reference 2Liu Y et al. · 2026Metabolomic insights into the neuroprotective actions of Ziziphi Spinosae Semen and jujuboside B against Aβ-induced toxicityView study →Reference 32023Jujuboside B inhibits febrile seizure by modulating AMPA-receptor activityView study →.
  • The honest headline: no human isolate trials; the sedative clinical use is the whole seed (jujuboside A/spinosin), not this compound; and as a membrane-active saponin with antiplatelet activity it earns a [moderate] isolate flag 5Reference 52013Zizyphus jujuba and its active component jujuboside B inhibit platelet aggregationView study →.
Evidence by indicationStrength of support
1. Neuroprotective / CNS

The strongest jujuboside-B-specific CNS signal: in mice it suppressed febrile seizures by dampening AMPA-receptor glutamatergic activity 3Reference 32023Jujuboside B inhibits febrile seizure by modulating AMPA-receptor activityView study →, and in C. elegans it protected against amyloid-β toxicity via daf-16/sir-2.1 (FOXO/sirtuin) pathways 2Reference 2Liu Y et al. · 2026Metabolomic insights into the neuroprotective actions of Ziziphi Spinosae Semen and jujuboside B against Aβ-induced toxicityView study → — a plausible mechanistic bridge to suan zao ren’s sedative rationale (reduced neuronal excitability).

Gap: two small preclinical studies in different models (mouse seizure, worm), with no sleep/EEG or anxiolytic endpoint for the isolate, no mammalian neurodegeneration model and no human data 2,3Reference 2Liu Y et al. · 2026Metabolomic insights into the neuroprotective actions of Ziziphi Spinosae Semen and jujuboside B against Aβ-induced toxicityView study →Reference 32023Jujuboside B inhibits febrile seizure by modulating AMPA-receptor activityView study →.

2. Hepatoprotective

In a rodent sepsis model, jujuboside B lowered ALT/AST and reduced TNF-α, IL-1β and NO in septic liver injury 1Reference 1Kim SJ et al. · 2023Hepatoprotective functions of jujuboside BView study →.

Gap: a single study in one model, with no dose-ranging and no chronic/fibrosis or human liver data — an anti-inflammatory rather than metabolic-liver effect 1Reference 1Kim SJ et al. · 2023Hepatoprotective functions of jujuboside BView study →.

3. Anti-inflammatory

Jujuboside B inhibited HMGB1-mediated severe inflammatory responses in human endothelial cells and mice 4Reference 42023AnimalJujuboside B inhibited HMGB1-mediated severe inflammatory responses in human endothelial cells and miceView study → — mechanistically consistent with the sepsis hepatoprotection (shared late-inflammatory axis).

Gap: a single cell+mouse study with surrogate inflammatory endpoints and no clinical translation 4Reference 42023AnimalJujuboside B inhibited HMGB1-mediated severe inflammatory responses in human endothelial cells and miceView study →.

4. Antiplatelet / vascular

Ziziphus jujuba and its component jujuboside B inhibit platelet aggregation 5Reference 52013Zizyphus jujuba and its active component jujuboside B inhibit platelet aggregationView study →, and jujuboside B inhibited neointimal hyperplasia and vascular-smooth-muscle-cell dedifferentiation via AMPK/PPAR-γ 6Reference 62021Jujuboside B inhibits neointimal hyperplasia and prevents VSMC dedifferentiation, proliferation and migration via AMPK/PPAR-γView study →.

Gap: in-vitro and rodent only; the antiplatelet effect implies a theoretical bleeding/anticoagulant-interaction caution but is unquantified in humans 5,6Reference 52013Zizyphus jujuba and its active component jujuboside B inhibit platelet aggregationView study →Reference 62021Jujuboside B inhibits neointimal hyperplasia and prevents VSMC dedifferentiation, proliferation and migration via AMPK/PPAR-γView study →.

5. Sedative (whole-seed context)

Suan zao ren whole seed/extract has a genuine traditional and clinical sedative use — but the studied actives and quality markers are jujuboside A and spinosin, not jujuboside B 7,8Reference 7Liu Z et al. · 2024ReviewPhytochemical, pharmacological, pharmacokinetic and toxicological characteristics of Ziziphi Spinosae Semen: a reviewView study →Reference 8Shergis JL et al. · 2020ReviewZiziphi Spinosae Semen: a review of botanical uses, phytochemistry, pharmacology, pharmacokinetics and toxicologyView study →.

Gap: there is no jujuboside-B monotherapy sleep, EEG or anxiolytic study, so the clinical hypnotic effect must not be attributed to this isolate — its contribution is inferred from class membership and the AMPA finding above 7Reference 7Liu Z et al. · 2024ReviewPhytochemical, pharmacological, pharmacokinetic and toxicological characteristics of Ziziphi Spinosae Semen: a reviewView study →.

Mechanisms

Target / pathwayEffectRelevant to
AMPA glutamate receptors↓ excitatory activity (anticonvulsant)neuroprotective / anti-seizure; sedative rationale
daf-16 (FOXO) / sir-2.1 (sirtuin)upregulated stress-response signalling; ↓ Aβ toxicityneuroprotective (Aβ)
TNF-α / IL-1β / iNOS-NOsuppressed; ↓ ALT/ASThepatoprotective (sepsis)
HMGB1inhibited release/signalling in endotheliumanti-inflammatory
AMPK / PPAR-γactivated; maintains VSMC contractile phenotypevascular / anti-restenosis
Platelet aggregationinhibitedantiplatelet / cardiovascular

Pharmacokinetics

Jujuboside B is a large, polar dammarane-type saponin and behaves like the class: poor oral bioavailability, limited passive absorption, and extensive hydrolysis by gut microbiota to the deglycosylated sapogenin (jujubogenin-type), which is the likely circulating/active species. Seed content is low (~0.13–0.19 mg/g), so dietary/decoction exposure to the isolate is modest, and no dedicated jujuboside-B ADME/half-life dataset exists — the pharmacokinetics are characterised only at the whole-seed review level.

Clinical trials

There are no trials of isolated jujuboside B. All clinical evidence in this space is for the whole suan zao ren seed/extract or multi-herb formulas (e.g. Suan Zao Ren Tang) for insomnia/anxiety, where jujuboside B is one minor constituent and not the standardised marker.

CompletedPlannedTerminatedPreclinical
(none, isolate)Thin(one study per signal)

Last checked: July 2026.

Toxicity & Safety

Jujuboside B carries a [moderate] flag for the isolated saponin, honestly justified. It is a membrane-active triterpene saponin, and saponins as a class carry haemolytic and mucosal/GI-irritant potential (surfactant action on lipid bilayers); it also has a demonstrated antiplatelet effect 5Reference 52013Zizyphus jujuba and its active component jujuboside B inhibit platelet aggregationView study → implying a theoretical bleeding/anticoagulant-interaction caution, and there are no human safety data or formal toxicology for the isolate. Counterbalancing this, the parent seed (suan zao ren) is food-grade and well tolerated at culinary/decoction doses, so real-world risk from the herb is low. Because this page is about the concentrated isolate rather than the seed, [moderate] is the honest call.

Pregnancy & lactation

Avoid — insufficient data. There are no reproductive or developmental studies on jujuboside B, and a membrane-active saponin with antiplatelet activity and no isolate safety record should not be used in pregnancy or lactation (traditional suan zao ren is itself used cautiously in pregnancy).

Dosage

There is no established human dose — all figures in the literature are preclinical research doses. Human exposure occurs only via the whole seed (traditionally 9–18 g dry-fried suan zao ren in decoction), within which jujuboside B is a minor (~0.13–0.19 mg/g) constituent, so no isolate dose should be inferred.

References

  1. Kim SJ, et al. (2023). Hepatoprotective functions of jujuboside B. Journal of Natural Medicines. https://pubmed.ncbi.nlm.nih.gov/36064835/
  2. Liu Y, et al. (2026). Metabolomic insights into the neuroprotective actions of Ziziphi Spinosae Semen and jujuboside B against Aβ-induced toxicity. Journal of Ethnopharmacology. https://pubmed.ncbi.nlm.nih.gov/41483858/
  3. (2023). Jujuboside B inhibits febrile seizure by modulating AMPA-receptor activity. Journal of Ethnopharmacology. https://pubmed.ncbi.nlm.nih.gov/36549370/
  4. (2023). Jujuboside B inhibited HMGB1-mediated severe inflammatory responses in human endothelial cells and mice. Journal of Medicinal Food. https://pubmed.ncbi.nlm.nih.gov/36576404/
  5. (2013). Zizyphus jujuba and its active component jujuboside B inhibit platelet aggregation. Phytotherapy Research. https://pubmed.ncbi.nlm.nih.gov/22893618/
  6. (2021). Jujuboside B inhibits neointimal hyperplasia and prevents VSMC dedifferentiation, proliferation and migration via AMPK/PPAR-γ. Frontiers in Pharmacology. https://pubmed.ncbi.nlm.nih.gov/34248626/
  7. Liu Z, et al. (2024). Phytochemical, pharmacological, pharmacokinetic and toxicological characteristics of Ziziphi Spinosae Semen: a review. Frontiers in Pharmacology. https://pubmed.ncbi.nlm.nih.gov/39679366/
  8. Shergis JL, et al. (2020). Ziziphi Spinosae Semen: a review of botanical uses, phytochemistry, pharmacology, pharmacokinetics and toxicology. Evidence-Based Complementary and Alternative Medicine. https://pubmed.ncbi.nlm.nih.gov/32695210/
  9. (2023). Advances in the pharmacological effects of jujuboside B. China Journal of Chinese Materia Medica. https://pubmed.ncbi.nlm.nih.gov/37802856/