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Ziziphus Jujuba
A traditional Chinese sleep and calming herb (its seed, 'Suanzaoren', is the second most-prescribed insomnia phytomedicine in Taiwan). Its saponins and flavonoids modulate GABAergic and serotonergic signalling — but human evidence is dominated by multi-herb decoctions and add-on trials, not standalone jujube.
What the evidence says
Most Jujube studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from mixed-quality randomised trials published 2017–2020 with a typical study size of 207 participants.
Based on 4 studies · 1 RCT · 207 total participants
Confidence
LowBy outcome
Jujube has an evidence score of 2.5/10 — emerging evidence based on 4 indexed studies. A traditional Chinese sleep and calming herb (its seed, 'Suanzaoren', is the second most-prescribed insomnia phytomedicine in Taiwan). Its saponins and flavonoids modulate GABAergic and serotonergic signalling — but human evidence is dominated by multi-herb decoctions and add-on trials, not standalone jujube. Representative study: PMID 32089719.
The commonly studied dose of Jujube is Traditionally 9-18g sour jujube seed (Suanzaoren) in decoction; no validated standalone supplement dose. Individual needs vary — start at the lower end of the range and adjust based on how you respond.
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Last reviewed June 2026 · evidence from 4 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Jujube (Ziziphus jujuba) is consumed as a fruit ('red date') and, more relevantly for sleep, as the seed of the spinosa variety — Suanzaoren / Ziziphi spinosae semen — a cornerstone of traditional Chinese sleep medicine. The seed contains saponins (jujubosides) and flavonoids (spinosin) that, in preclinical work, modulate GABAergic and serotonergic systems associated with sedative and hypnotic effects. The honest evidence picture: human clinical data overwhelmingly come from multi-herb decoctions (Suanzaoren decoction and 'Jiawei' variants) or as an add-on to conventional hypnotics like lorazepam — there is little rigorous standalone-jujube human trial data. Reviews note the seed's wide traditional use and plausible neuropharmacology while emphasizing that the active agents and clinical efficacy still require confirmation. It is best framed as a traditionally-grounded, mechanistically-plausible calming/sleep herb with emerging, mostly-combination clinical evidence.
Seed metabolites (jujubosides, spinosin) modulate GABAergic activity and the serotonergic system, mechanisms linked to sedative and hypnotic effects.
Whole-seed extracts and isolated saponins/flavonoids produce sedative-hypnotic effects in preclinical models, sometimes compared to benzodiazepines.
How Jujube works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
Traditionally 9-18g sour jujube seed (Suanzaoren) in decoction; no validated standalone supplement dose
Can be taken without food
| Form | Type |
|---|---|
| 💊Sour jujube seed (Suanzaoren) extract | Recommended |
| 💊Standardized seed extract | Alternative |
Most clinical evidence used jujube within multi-herb decoctions rather than as a single ingredient.
Minimum: 4 weeks
Optimal: 12 weeks
Cycling: Not required
Note: Evening use for sleep, by tradition.
Dose-response data unavailable. The current published research for Jujube does not provide sufficient dose-specific outcome data to generate reliable dose-response curves.
Refer to the Dosage & Timing section above for recommended dose ranges based on available evidence.
Improved sleep quality shown mainly in multi-herb decoctions or as an add-on to hypnotics.
Plausible anxiolytic effect via GABA/serotonin pathways; limited standalone human data.
Human trials test jujube within decoctions or alongside drugs, so its standalone contribution is uncertain.
Avoid — insufficient safety data for standalone medicinal use.
Use caution due to additive sedation.
Additive sedation is plausible; one trial used jujube-containing decoction alongside lorazepam.
May increase drowsiness when combined.
Traditional hypotensive use suggests possible additive blood-pressure lowering; monitor.
Tip: Use in the evening; avoid driving until response known
Tip: Take with food or reduce dose
Both are traditional sedative herbs acting on GABAergic pathways and are paired in sleep formulas.
Layered sleep support (both modestly evidenced).
Lemon balm adds calming/anxiolytic activity that complements jujube's sedative profile.
Complementary evening calming and sleep support.
The best time to take Jujube is before bed. It can be taken on an empty stomach. Traditionally taken in the evening for insomnia; supplement extract doses vary and are not trial-validated.
Jujube is generally safe at recommended doses, with a few precautions worth noting. The most commonly reported side effects are drowsiness, mild GI upset. Use caution if any of these apply to you: Pregnancy and breastfeeding (insufficient safety data); Concurrent sedatives/hypnotics (additive CNS depression).
Mint-family herb that modulates GABA for mild anxiety relief and sleep support — well-suited for daily use without sedation.
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