Ziziphus jujuba Mill. (Rhamnaceae) · herb
Evidence tier: weak
A nourishing, gentle adaptogen used in TCM for calming the spirit, supporting digestion, and harmonising other herbs.
Laboratory hypothesis only. Immunomodulation via TLR4/MAPK/NF-kB signalling (cell line plus immunosuppressed mice); sedation via GABA-A and 5-HT1A modulation by jujubosides and spinosin, and MSK attributes that mechanism to the SEED formula, not the fruit. Nothing is proven in humans.
Weak, and the score of 3 is earned entirely by an indication nobody markets jujube for. Human RCTs of jujube FRUIT exist, but they are about metabolic markers, not calm or immunity. Two meta analyses cover them: Clinical Nutrition Open Science 2024 (4 RCTs; BMI -1.03 kg/m2, triglycerides -24.64 mg/dl, total cholesterol -12.43 mg/dl, LDL -6.96 mg/dl) and Nutrition and Diabetes 2025 (PMID 40399274; 7 trials, n=483, 5 to 30 g daily for 4 to 12 weeks). The 2025 review's own verdict is damning: findings should be interpreted with caution given the LOW QUALITY of the evidence base due to clinical and methodological heterogeneity, HIGH RISKS OF PUBLICATION BIAS, poor reporting and statistical issues, and the overall quality of the evidence is limited. Five of the seven trials came from a single country and heterogeneity exceeded 50 percent. For the two things jujube is actually sold for, the correct grade is insufficient. The anxiolytic claim has NO human trial of jujube fruit at all: the anxiolytic data is a mouse study (PMID 10996283) and it is on the SEED. The immunomodulatory claim is in vitro and immunosuppressed mice only (PMID 29655744, RAW264.7 cells, TLR4/MAPK/NF-kB), with zero human trials. The Chen 2017 review (PMID 28680447) confirms the fruit's brain literature is cultured PC12 cells, astrocytes, mice, rats and gerbils, with no human clinical trials.
5 to 30 g daily of dried fruit (powder, tablets, syrup or decoction), one to three times daily, over 4 to 12 weeks in the trials. Seed preparations, which are a different ingredient, run 250 mg twice daily and must not be dosed from the fruit literature.
3 to 10 dried fruits daily as tea or soup ingredient. Seed extract: 1 to 3 g for sleep formulations.
Very safe. May raise blood sugar, caution in diabetes at high doses.
Pregnancy: caution
Breastfeeding: caution
Active compounds: flavonoids (quercetin-3-O-rutinoside, kaempferol-3-O-rutinoside, catechin, epicatechin), acidic arabinogalactan polysaccharides, triterpenic acids (betulinic, oleanolic, ursolic, maslinic, alphitolic), cyclic AMP
Remedies using Jujube · Browse by body system · Check it against what you take
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.