Da Zao (Date, Jujube)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Da Zao (jujube)?

  Roughly 10–30 g, or 3–12 whole fruits, decocted with the other herbs. This matches the site’s existing dosage record and standard materia medica ranges; the dried fruit is typically added directly to the decoction pot rather than prepared separately.

  Source: Sacred Lotus Sacred Lotus sources & references (dosage, preserved); standard materia medica ranges. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Da Zao (jujube)?

  The site’s existing caution stands: Da Zao may cause heat, dampness, and phlegm. Being sweet and cloying, it is generally used with care — or avoided — in patterns of dampness, phlegm accumulation, or food stagnation, and in cases of parasites or abdominal distention/bloating, consistent with cautions given for other sweet Spleen tonics.

  Source: Sacred Lotus Sacred Lotus sources & references (caution, preserved); Bensky, Chinese Herbal Medicine: Materia Medica (3rd ed.), general cautions for sweet/cloying Spleen tonics.

Chinese Herb Toxicity & Overdose

• Low. Da Zao is a common food (the jujube/red date) with a long dietary history and no significant toxicity reported at the doses used in decoctions. Reference note only; excess amounts may aggravate dampness/phlegm in susceptible patterns (see cautions).

  Source: materia medica consensus; long culinary/dietary use of the fruit. Reference note, not a safety guarantee.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for Da Zao at typical dietary/decoction doses, consistent with its long history as a common food. As with any concentrated herbal preparation, patients on multiple medications should mention its use to a qualified practitioner. (Precautionary note, not a demonstrated interaction.)

Western / Biomedical Research

Chinese Herb Clinical Studies & Research

Provided as research context — a summary of published biomedical study, not a therapeutic or medical claim.

• Is there modern research on Da Zao (Fructus Zizyphi Jujubae)?

  Yes — a body of preclinical work on the fruit plus a small amount of human clinical evidence, though most of it addresses general antioxidant/GI activity rather than the classic TCM indications directly. Reviews note the fruit and seed of Ziziphus jujuba have been studied for substantially different effects, reinforcing that they are not interchangeable.

  • Pharmacology review (fruit and seed distinguished) — a review of experimental and clinical pharmacology across Ziziphus jujuba plant parts describes the fruit’s traditional use for digestive disorders, gastric complaints, cough, and mild laxative/hypotensive effects, while separately noting the dried seed (Suan Zao Ren, the spinosa variety) is used specifically for insomnia — a useful confirmation that fruit and seed have distinct, non-overlapping traditional uses.
  • Antioxidant activity (preclinical, meta-analysis) — a systematic review and meta-analysis of 19 rodent studies found jujube fruit extracts significantly lowered oxidative-stress markers (malondialdehyde) and raised antioxidant enzymes (superoxide dismutase, glutathione peroxidase), though study quality was rated low and catalase levels were not significantly affected; animal models, not clinical proof.
  • Human clinical (single RCT, unrelated condition) — a double-blind randomized trial in adults with treatment-resistant chronic spontaneous urticaria (n = 64) found jujube fruit syrup added to standard antihistamine therapy improved urticaria activity scores versus placebo by day 7 and day 28. This is outside Da Zao’s classic TCM indications and is a single small trial in a different condition — noted here as an example of active human research on the fruit itself, not as support for a traditional-use claim.

  Overall: encouraging preclinical antioxidant data on the fruit, with clinical evidence still limited and concentrated outside its classic Spleen/Stomach/spirit-calming indications.

  Sources: PMID 28084039 (Rodríguez Villanueva & Rodríguez Villanueva, “Experimental and Clinical Pharmacology of Ziziphus jujuba Mills,” Phytotherapy Research, 2017; review, fruit and seed distinguished); PMID 39139963 (jujube fruit-extract oxidative-stress systematic review/meta-analysis of rodent studies, Food Science & Nutrition, 2024; preclinical); PMID 38094286, PMC 10715122 (randomized double-blind trial, jujube fruit syrup as antihistamine adjuvant in chronic spontaneous urticaria). Research context, not a therapeutic claim.

Chinese Herb Notes

• How is Da Zao different from Suan Zao Ren? / What is Da Zao commonly combined with?

  Da Zao and Suan Zao Ren are different parts of a related plant and are easily confused by name alone. Da Zao (“great date”) is the dried fruit of Ziziphus jujuba — Sweet, Warm, entering Spleen and Stomach, used to tonify qi/blood and harmonize formulas. Suan Zao Ren (“sour date pit”) is the dried seed of Ziziphus jujuba var. spinosa — a Heart/Liver-blood-nourishing herb prized specifically for calming the spirit and treating insomnia. The pinyin overlap (both contain “zao”/jujube) is a common source of mix-ups; they are not interchangeable and are listed as separate herbs.

  Common combinations (grounded in the site’s formula records):

  • With Sheng Jiang (fresh ginger) — the classic pairing: Sheng Jiang disperses, Da Zao tonifies and protects the Stomach; together they harmonize the Ying (nutritive) and Wei (defensive) qi, as in Gui Zhi Tang (Cinnamon Twig Decoction) and its many variants (Gui Zhi Jia Long Gu Mu Li Tang, Chai Hu Jia Long Gu Mu Li Tang, Dang Gui Si Ni Tang, Wu Zhu Yu Tang).
  • Alongside harsh, bitter, or purgative herbs — Da Zao (often with Sheng Jiang and Zhi Gan Cao) buffers Stomach-irritating combinations of Chai Hu, Huang Qin, Ban Xia, Huang Lian, or Da Huang, as in Xiao Chai Hu Tang, Da Chai Hu Tang, and Ban Xia Xie Xin Tang.
  • In qi/blood tonics — with Ren Shen, Huang Qi, Bai Zhu, and Dang Gui in formulas such as Gui Pi Tang (Restore the Spleen Decoction) and Shi Quan Da Bu Tang (All-Inclusive Great Tonifying Decoction).
  • In Gan Mai Da Zao Tang — with Gan Cao and Xiao Mai (wheat), it is the formula’s name-sake herb for nourishing the Heart and calming the spirit in restlessness/agitation.
  • Constructing the Middle — with Sheng Jiang and Zhi Gan Cao as assistant/envoy herbs in Xiao Jian Zhong Tang, supporting the Spleen and Stomach alongside Gui Zhi and doubled Bai Shao.

  Source: Sacred Lotus ingredient links (real formula composition joins for da-zao-date-jujube); Bensky & Barolet, Chinese Herbal Medicine: Formulas & Strategies.