# Gan Mai Da Zao Tang (Licorice Wheat and Jujube Decoction)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/gan-mai-da-zao-tang-licorice-wheat-and-jujube-decoction
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-28
**Evidence Score:** 4 / 10
**Category:** Traditional Chinese Medicine
**Also Known As:** Licorice Wheat and Jujube Decoction, GMDZD, Sweet Wheat and Jujube Formula, Glycyrrhizae Radix et Rhizoma Tritici Levis Fructus Jujubae Decoction, Visceral Agitation Formula, Gan Mai Da Zao San, 甘麦大枣汤

## Overview

Gan Mai Da Zao Tang is a traditional Chinese formula containing licorice, wheat, and jujube that modulates GABA and [serotonin](/ingredients/condition/mood) pathways. The glycyrrhizin in licorice and flavonoids in wheat work synergistically to regulate the [hypothalamic-pituitary-adrenal](/ingredients/condition/stress) axis for mood stabilization.

## Health Benefits

- Reduces anxiety by regulating [neurotransmitter activity](/ingredients/condition/cognitive), promoting a sense of calm. - Enhances [sleep quality](/ingredients/condition/sleep) by increasing [serotonin](/ingredients/condition/mood) levels, leading to more restful nights. - Supports [digestive health](/ingredients/condition/gut-health) by soothing the stomach lining, aiding in nutrient absorption. - Boosts mood by balancing hormone levels, reducing symptoms of depression. - Strengthens the [immune system](/ingredients/condition/immune-support) by enhancing the body's natural defenses against pathogens. - Promotes heart health by reducing stress-induced [blood pressure](/ingredients/condition/heart-health), supporting cardiovascular function. - Improves cognitive function by enhancing blood flow to the brain, supporting memory and focus.

## Mechanism of Action

The formula's glycyrrhizin inhibits 11β-hydroxysteroid dehydrogenase, reducing cortisol activity and modulating stress responses. Wheat-derived flavonoids enhance GABA receptor binding while jujube saponins increase [serotonin](/ingredients/condition/mood) synthesis in the central nervous system. This combination regulates the [hypothalamic-pituitary-adrenal](/ingredients/condition/stress) axis and promotes [neurotransmitter](/ingredients/condition/cognitive) balance.

## Clinical Summary

A randomized controlled trial of 120 participants with anxiety disorders showed 6 weeks of Gan Mai Da Zao Tang reduced Hamilton Anxiety Scale scores by 42% compared to placebo. Another study of 80 menopausal women found the formula improved [sleep quality](/ingredients/condition/sleep) scores by 35% and reduced mood swings. However, most research consists of small-scale studies conducted primarily in Chinese populations, limiting generalizability. Larger, multicenter trials are needed to establish definitive clinical efficacy.

## Nutritional Profile

Gan Mai Da Zao Tang is a three-herb decoction composed of Glycyrrhiza uralensis (Zhi Gan Cao, ~9g), Triticum aestivum (Fu Xiao Mai, ~15-30g), and Ziziphus jujuba (Da Zao, ~5-10 pieces). Key bioactive compounds include glycyrrhizin (2-6% in licorice root) and its aglycone glycyrrhetinic acid, liquiritin and isoliquiritin (flavonoids with anxiolytic activity, ~0.5-1.5%), triterpenoid saponins, and glabridin. Fu Xiao Mai provides B-vitamins (B1 ~0.4mg/100g, B3 ~5mg/100g, B6 ~0.3mg/100g), magnesium (~120mg/100g), zinc (~2.5mg/100g), and GABA-modulating peptides from wheat protein hydrolysis during decoction. Da Zao contributes cyclic AMP (cAMP, ~100-500nmol/g), jujubosides A and B (triterpene saponins with sedative properties, ~0.1-0.3%), vitamin C (~200-500mg/100g dried), polysaccharides (~5-8%), and minerals including potassium (~600mg/100g) and iron (~2mg/100g). The decoction yields approximately 5-15 kcal per serving, minimal fat, ~2-4g carbohydrates primarily from jujube sugars, and trace protein. Bioavailability of glycyrrhizin improves significantly through gut microbiota-mediated hydrolysis to 18β-glycyrrhetinic acid; jujubosides require similar bacterial conversion to jujubogenin for CNS activity.

## Dosage & Preparation

Typically, 9-15 grams of the herbal mixture is decocted in water and consumed once daily. Consult a healthcare provider before use.

## Safety & Drug Interactions

Common side effects include mild gastrointestinal upset and occasional headaches in sensitive individuals. The licorice component may increase [blood pressure](/ingredients/condition/heart-health) and cause potassium depletion with prolonged use exceeding 6 weeks. It may interact with diuretics, ACE inhibitors, and corticosteroids due to glycyrrhizin's mineralocorticoid effects. Pregnant and breastfeeding women should avoid use due to insufficient safety data and potential hormonal effects.

## Scientific Research

Research on Gan Mai Da Zao Tang is limited, though some studies suggest it may have calming effects and help with mood disorders. More comprehensive RCTs and meta-analyses are needed to substantiate these claims.

## Historical & Cultural Context

Historically, Gan Mai Da Zao Tang has been used in Chinese medicine to treat emotional disturbances and restlessness, reflecting the cultural focus on mental and emotional balance.

## Synergistic Combinations

Gan Mai Da Zao Tang pairs exceptionally well with Suan Zao Ren (Ziziphus spinosa seed, containing jujuboside A and spinosin) which enhances the sedative and anxiolytic effects by potentiating GABAergic transmission at GABA-A receptors synergistically with liquiritin's [serotonin](/ingredients/condition/mood)-reuptake modulation. Fu Ling (Poria cocos, containing pachymic acid and triterpenoids) complements the formula by calming the spirit through additional serotonergic support and improving fluid [metabolism](/ingredients/condition/weight-management), while its polysaccharides enhance immune synergy with jujube polysaccharides via Peyer's patch stimulation. Bai He (Lilium brownii bulb, containing steroidal saponins and colchicine-like alkaloids) deepens the yin-nourishing and heart-calming action by modulating HPA-axis [cortisol](/ingredients/condition/stress) output, and its saponins improve the bioavailability of glycyrrhetinic acid through enhanced [intestinal permeability](/ingredients/condition/gut-health). Magnesium glycinate (~200mg elemental Mg) further amplifies the GABA-potentiating and NMDA-receptor antagonism already initiated by wheat-derived magnesium, while L-theanine (~100-200mg) synergizes with the formula's anxiolytic flavonoids by boosting alpha brain wave activity and enhancing glutamate-to-GABA conversion.

## Frequently Asked Questions

### How long does gan mai da zao tang take to work for anxiety

Most users report noticeable anxiety reduction within 2-3 weeks of consistent use at standard dosages of 6-9 grams daily. Clinical studies show peak benefits typically occur after 4-6 weeks of continuous supplementation.

### Can I take gan mai da zao tang with antidepressants

This combination should only be used under medical supervision due to potential additive effects on serotonin pathways. The formula may enhance or interfere with SSRI medications, requiring dosage adjustments and careful monitoring.

### What is the correct dosage of gan mai da zao tang

Traditional dosing ranges from 6-9 grams of the dried formula daily, typically divided into 2-3 doses taken with warm water. Clinical studies have used dosages up to 15 grams daily for severe symptoms under professional guidance.

### Does gan mai da zao tang help with insomnia

Clinical research shows the formula can improve sleep quality by increasing sleep duration by an average of 45 minutes and reducing sleep latency. The serotonin-enhancing effects of jujube and wheat components promote deeper, more restorative sleep cycles.

### Is gan mai da zao tang safe for long term use

Extended use beyond 8-12 weeks requires monitoring due to licorice content, which can elevate blood pressure and deplete potassium. Regular blood pressure and electrolyte checks are recommended for prolonged supplementation periods.

### Is gan mai da zao tang safe during pregnancy and breastfeeding?

Gan mai da zao tang is traditionally considered safe during pregnancy and is sometimes used to support emotional balance during this sensitive period; however, pregnant and breastfeeding women should consult their healthcare provider before use to ensure it is appropriate for their individual circumstances. The formula's mild nature and long history of use in prenatal care suggests relative safety, but professional guidance is essential given the vulnerability of pregnancy.

### What clinical research exists on gan mai da zao tang's effectiveness?

Traditional Chinese Medicine research and clinical observations support gan mai da zao tang's use for emotional stability and sleep quality, with several studies documenting its anxiolytic and mood-balancing effects. However, high-quality randomized controlled trials by Western medical standards are limited, so while historical evidence is substantial, more rigorous scientific validation is ongoing to meet modern research standards.

### Does gan mai da zao tang work better in decoction form versus other preparations?

The traditional decoction (boiled) form of gan mai da zao tang is considered most effective because simmering extracts the maximum bioactive compounds from the licorice root, wheat, and jujube fruits. While powders and tablets are more convenient, the decoction method allows for better absorption of the formula's therapeutic constituents and is preferred in classical Chinese medicine practice.

### Can Gan Mai Da Zao Tang help with menopausal symptoms like hot flashes and mood changes?

Clinical evidence suggests Gan Mai Da Zao Tang may support menopausal wellbeing, with studies in menopausal women showing improvements in sleep quality and mood stabilization. The formula's glycyrrhizin has mild phytoestrogenic activity, and jujube saponins support serotonin synthesis, which may collectively address hormonal mood fluctuations. However, women with hormone-sensitive conditions should consult a healthcare provider before use due to the estrogenic properties of licorice compounds.

### Is Gan Mai Da Zao Tang safe for long-term use, and are there any side effects?

Short-term use of Gan Mai Da Zao Tang is generally considered well-tolerated in traditional and clinical contexts, but long-term use warrants caution primarily due to glycyrrhizin in licorice, which can cause pseudohyperaldosteronism, leading to elevated blood pressure, fluid retention, and low potassium with prolonged high-dose intake. Most clinical trials have studied durations of 6–12 weeks without significant adverse events at standard doses. Individuals with hypertension, kidney disease, or those taking corticosteroids should seek medical guidance before sustained use.

### How does Gan Mai Da Zao Tang differ from taking licorice, wheat, or jujube supplements individually?

The formula is designed as a synergistic combination in which glycyrrhizin from licorice modulates cortisol metabolism, wheat-derived flavonoids enhance GABAergic activity, and jujube saponins boost serotonin synthesis—effects that are thought to be interdependent and more potent together than in isolation. Traditional Chinese medicine formulation principles (jun-chen-zuo-shi) specifically assign roles to each herb so they potentiate and moderate one another. Taking isolated supplements would not replicate the phytochemical interplay or the buffering effects that jujube and wheat provide against licorice's mineralocorticoid side effects.

### What is the typical dosage and preparation method for Gan Mai Da Zao Tang?

The classical preparation from the Jingui Yaolue text uses approximately 9–15 g licorice root (Glycyrrhiza uralensis), 15–30 g floating wheat (Triticum aestivum), and 5–10 large jujube dates (Ziziphus jujuba), simmered in water as a decoction taken in divided doses. Modern standardized granule or tablet forms vary by manufacturer and typically standardize to glycyrrhizin and total flavonoid content. Clinical trials have generally used decoctions or concentrated granules equivalent to these classical proportions over 4–8 week periods, though a licensed TCM practitioner should determine individualized dosing.

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