The Eden Institute Biblical Herbalism Education

Eden Apothecary · Herb Profile

Sour Jujube Seed (Suan Zao Ren)

Ziziphus jujuba Mill. var. spinosa (Bunge) Hu ex H.F. Chow (syn. Ziziphus spinosa Hu; pharmaceutical Semen Ziziphi Spinosae)

Pronounced Sour Jujube: sow-er JOO-joob. Suan Zao Ren: swahn dzow run. Ziziphus jujuba var. spinosa: ZIZ-ih-fus joo-JOO-buh var. spih-NOH-suh.

Neutral and moistening: a sweet-and-sour, food-grade seed that nourishes Heart and Liver blood, houses and settles a spirit left restless by emptiness, and quietly astringes the sweat of depletion.

At a glance

Botanical name
Ziziphus jujuba Mill. var. spinosa (Bunge) Hu ex H.F. Chow (syn. Ziziphus spinosa Hu; pharmaceutical Semen Ziziphi Spinosae)
Family
Rhamnaceae (buckthorn family)
Part used
Dried ripe seed (kernel) of the wild spiny/sour jujube (Semen Ziziphi Spinosae), traditionally crushed and dry-fried (chao Suan Zao Ren) before use
Taste
Sweet and sour (suan means sour, and the sourness gives the herb its name), with a faint astringency. The sweet nourishes and moistens the blood, the sour astringes and, with the sweet, generates fluids and settles a restless spirit.
Temperature
Neutral
Moisture
Moist

Safety at a glance

In pregnancy

Insufficient modern human safety data; caution advised. Suan Zao Ren is a food-grade seed with a long record of gentle use, and it is not a recognized emmenagogue or uterine stimulant, but controlled data in pregnancy are lacking and some sources advise against use. Modern references (Chen and Chen, Chinese Medical Herbology and Pharmacology; Bensky, Clavey and Stoger, Chinese Herbal Medicine: Materia Medica; AHPA Botanical Safety Handbook, 2nd ed.) do not document teratogenicity but counsel caution. Given the herb's sedative activity and the absence of controlled data, prudent practice is to avoid unsupervised use in pregnancy. Source: Chen and Chen; Bensky, Clavey and Stoger; AHPA Botanical Safety Handbook (2nd ed.).

While breastfeeding

Insufficient modern data; caution advised. There are no controlled lactation studies and no LactMed monograph. The sedative constituents (jujubosides, spinosin) could in theory pass into milk and add to infant drowsiness, so unsupervised use while breastfeeding is best avoided; if used, watch the nursing infant for excess sleepiness. Source: Chen and Chen, Chinese Medical Herbology and Pharmacology; AHPA Botanical Safety Handbook (2nd ed.); no specific human lactation data.

For children

Traditionally given, in reduced dose, to children for restless sleep and night terrors, and the seed is food-grade; nonetheless, because of its sedative action and the lack of controlled pediatric data, it should be used in children only under professional guidance at low, weight-appropriate doses, and not combined with sedating medications. Source: Chen and Chen, Chinese Medical Herbology and Pharmacology; Bensky, Clavey and Stoger, Materia Medica.

Cautions

A gentle, food-grade herb (the seed of an edible fruit) that is well tolerated; the main cautions are its sedative strength and its cloying, moist nature. Because it measurably deepens and prolongs drug-induced sleep, it can add to the effect of sedatives, sleep medicines, and alcohol (see Drug Interactions), and it should be disclosed before surgery or anesthesia. Large doses may cause digestive heaviness or daytime grogginess. Rare allergic reactions to jujube have been reported. Its oily, nourishing quality can aggravate loose stools, diarrhea, or heavy dampness.

General contraindications

Concurrent sedative, hypnotic, anxiolytic, or other CNS-depressant drugs and alcohol without supervision (additive sedation). Heavy dampness, phlegm, or diarrhea, and Spleen deficiency with dampness (TCM). Vigorous excess-heat and fire patterns. Known allergy to jujube (Ziziphus). Pregnancy and lactation are best approached cautiously given limited modern safety data (see safety fields).

Stewardship

Not at risk. The wild spiny jujube is a hardy, abundant, widely distributed shrub-tree across northern and northwestern China and is both wild-harvested and cultivated for its seed, a mainstream, high-volume commodity; seed harvest does not kill the plant. The sourcing concern is authenticity and adulteration (the seed of the related Ziziphus mauritiana, Indian jujube, is a documented substitute) rather than wild-population survival, so confirm species, variety, and geographic origin. Not listed by United Plant Savers (a North American native-plant registry).

In the traditional record

Not in canonical biblical texts. The genus Ziziphus reaches the biblical and Mediterranean world through the Christ's-thorn jujube (Ziziphus spina-christi), a Levantine relative traditionally linked to Christ's crown of thorns, and through the jujube fruit described by Dioscorides and Pliny; Suan Zao Ren itself, however, is the Chinese spiny jujube, whose documented tradition is East Asian, first recorded in the Han-era Shen Nong Ben Cao Jing as Suan Zao and carried through every later Chinese materia medica.

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