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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
Jujube doesn't have enough studies with structured effect-size data yet to pool a verdict. Browse the studies below for individual findings.
Most evidence is from high-quality meta-analyses and randomised trials published 2008–2026 with a typical study size of 207 participants.
Based on 33 studies · 2 meta-analyses · 14 RCTs · 207 total participants
Confidence
High confidenceBy outcome
Mechanistically plausible and traditionally used for sleep, but human evidence is a single add-on RCT (jujube within a multi-herb decoction plus lorazepam) alongside narrative reviews and in-silico work — no standalone efficacy trials.
12 randomised trials
92% were about Jujube in an audit of 12 of them
Every randomised or controlled trial of Jujube indexed in PubMed, not a hand-picked subset. Meta-analyses and systematic reviews are deliberately excluded from this count: most of them cover many compounds at once, so counting them would inflate it.
PubMed · as of Sep 2026
6 trials ongoing or recruiting · 8 completed on ClinicalTrials.gov
1 of the completed trials have posted results
Registered trials show research momentum for Jujube, not proof of effect — a registration is a plan, and posted results are sponsor-reported, not peer-reviewed. They are never counted toward the evidence rating above.
Browse these trials on ClinicalTrials.govClinicalTrials.gov · as of Oct 2026
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.
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
Jujube has an evidence score of 3/10 — emerging evidence based on 33 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.
Dosing for Jujube: 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.
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 has a safety rating of "moderate". That is a category, not a measure of individual risk, and there are precautions worth knowing. Reported side effects include drowsiness, mild GI upset. How often they occur is not established for all of them. Use caution if any of these apply to you: Pregnancy and breastfeeding (insufficient safety data); Concurrent sedatives/hypnotics (additive CNS depression).
Ashwagandha
Likely helpsReduces cortisol and anxiety while improving sleep quality and physical recovery in stressed adults.
Lavender
Too few graded studiesAromatic botanical with well-documented anxiolytic, sleep-promoting, and mood-supporting effects. In one 77-person trial, anxiety scores fell 45% on oral Silexan and 46% on low-dose lorazepam, with no test of the difference reported, which does not show it can replace a prescribed anxiolytic.
Kava
Probably helpsKavalactones are studied for anxiety. A Cochrane review of 11 placebo-controlled trials found kava extract lowered anxiety scores more than placebo, but no trial cited here shows it works as well as a prescription anti-anxiety medication.
Lemon Balm
Too few graded studiesMint-family herb that modulates GABA for mild anxiety relief and sleep support — well-suited for daily use without sedation.
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Reviewed by Dr. Baher Al Hakim · Last reviewed June 2026 · evidence from 33 studies · how we score · editorial policy
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.
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