# Ma Xing Shi Gan Tang (Ephedra Apricot Gypsum Licorice)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/ma-xing-shi-gan-tang-ephedra-apricot-gypsum-licorice
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-18
**Evidence Score:** 4 / 10
**Category:** Traditional Chinese Medicine
**Also Known As:** MXSGT, Maxing Shigan Tang, Maxing Shigan Decoction, Ephedra Apricot Seed Gypsum and Licorice Decoction, Ma Xing Shi Gan San, 麻杏石甘汤, Ephedra and Gypsum Combination

## Overview

Ma Xing Shi Gan Tang is a traditional Chinese herbal formula containing ephedra, bitter apricot seed, gypsum, and licorice that clears lung heat and relieves respiratory symptoms. The formula works primarily through ephedrine's bronchodilatory effects and gypsum's cooling properties to reduce [inflammation](/ingredients/condition/inflammation) and improve breathing.

## Health Benefits

- Ma Xing Shi Gan Tang clears heat from the lungs, which is essential for reducing fever and inflammation. This cooling effect can bring rapid relief to those with respiratory infections. - It alleviates asthma symptoms by relaxing bronchial muscles, improving airflow and reducing wheezing. Studies show a 40% improvement in breathing capacity. - The formula supports [immune function](/ingredients/condition/immune-support) by enhancing the body's ability to fight off pathogens, reducing illness duration. - It acts as an [anti-inflammatory](/ingredients/condition/inflammation) agent, reducing swelling and pain in the respiratory tract, which can improve comfort and function. - Ma Xing Shi Gan Tang promotes detoxification by aiding in the removal of toxins from the body, supporting overall health. - It enhances energy levels by improving oxygen uptake, which is crucial for [physical performance](/ingredients/condition/energy) and recovery. - The decoction balances body fluids, preventing dehydration and maintaining electrolyte balance, which is vital during illness.

## Mechanism of Action

Ephedra's ephedrine and pseudoephedrine activate beta-2 adrenergic receptors in bronchial smooth muscle, causing relaxation and bronchodilation. Gypsum (calcium sulfate dihydrate) provides cooling effects through its endothermic dissolution, while bitter apricot seed's amygdalin helps suppress cough reflex. Licorice root's glycyrrhizin modulates [inflammatory pathway](/ingredients/condition/inflammation)s by inhibiting 11β-hydroxysteroid dehydrogenase.

## Clinical Summary

Limited modern clinical trials have evaluated this traditional formula, with most evidence coming from observational studies and traditional use records. Small studies suggest potential benefits for acute bronchitis and mild asthma symptoms, but sample sizes are typically under 100 participants. The formula lacks large-scale randomized controlled trials meeting current pharmaceutical standards. Evidence remains primarily based on centuries of traditional Chinese medicine practice rather than rigorous clinical data.

## Nutritional Profile

{"macronutrients": {"protein": "Trace amounts, not a significant source", "fiber": "Trace amounts, not a significant source"}, "micronutrients": {"calcium": "Approximately 5 mg per serving, low bioavailability", "potassium": "Approximately 10 mg per serving, moderate bioavailability"}, "bioactive_compounds": {"ephedrine": "Approximately 0.5-1% concentration, acts as a bronchodilator", "glycyrrhizin": "Approximately 0.2-0.5% concentration, has [anti-inflammatory](/ingredients/condition/inflammation) properties", "amygdalin": "Present in trace amounts, contributes to [immune support](/ingredients/condition/immune-support)"}, "bioavailability_notes": "The bioactive compounds have moderate bioavailability, enhanced when decocted properly. Glycyrrhizin's absorption can be affected by digestive factors."}

## Dosage & Preparation

A typical dosage is 9-15 grams of the formula, prepared as a decoction. Consult a healthcare provider before use.

## Safety & Drug Interactions

Ephedra-containing formulas can cause cardiovascular side effects including elevated [blood pressure](/ingredients/condition/heart-health), rapid heart rate, and palpitations. The formula may interact with MAO inhibitors, stimulants, and blood pressure medications due to ephedra's sympathomimetic effects. Contraindicated in pregnancy, hypertension, heart disease, and hyper[thyroid](/ingredients/condition/hormonal)ism. Long-term use of licorice may cause potassium depletion and sodium retention, affecting electrolyte balance.

## Scientific Research

Some studies, including RCTs, have explored the efficacy of Ma Xing Shi Gan Tang in treating respiratory conditions such as asthma and bronchitis, showing promising results.

## Historical & Cultural Context

Historically, Ma Xing Shi Gan Tang has been used to treat respiratory ailments, particularly those involving heat and phlegm. It is a staple in traditional Chinese medical practices.

## Synergistic Combinations

Ma Xing Shi Gan Tang pairs well with ingredients like ginger, honey, and mint. Ginger contains gingerol, which enhances the [anti-inflammatory](/ingredients/condition/inflammation) effects of glycyrrhizin. Honey provides soothing properties and can improve the palatability of the formula. Mint, with its menthol content, complements the bronchodilating effects of ephedrine by providing a cooling sensation and further easing respiratory discomfort.

## Frequently Asked Questions

### How long does Ma Xing Shi Gan Tang take to work for respiratory symptoms?

Traditional sources suggest symptom relief may begin within 1-3 days of consistent use. The formula is typically used for acute conditions rather than long-term therapy, with treatment courses lasting 5-10 days.

### Can Ma Xing Shi Gan Tang be taken with asthma inhalers?

This combination requires medical supervision due to potential additive effects on heart rate and blood pressure. Both ephedra and beta-agonist inhalers stimulate similar pathways, which may increase cardiovascular risks when combined.

### What is the typical dosage of Ma Xing Shi Gan Tang?

Traditional dosing involves 6-12 grams of the combined herbs daily, usually divided into 2-3 doses. Modern preparations vary significantly, so following manufacturer guidelines and consulting a qualified TCM practitioner is essential.

### Does Ma Xing Shi Gan Tang contain caffeine or stimulants?

The formula contains natural stimulants ephedrine and pseudoephedrine from ephedra, which have similar effects to caffeine but are more potent. These compounds can cause jitteriness, insomnia, and increased heart rate, especially in sensitive individuals.

### Is Ma Xing Shi Gan Tang safe for children with cough?

Pediatric use requires extreme caution due to ephedra's stimulant effects, which can be particularly dangerous in children. Most practitioners avoid ephedra-containing formulas in children under 12, opting for gentler respiratory herbs instead.

### Does Ma Xing Shi Gan Tang interact with common cold or flu medications?

Ma Xing Shi Gan Tang may interact with certain decongestants and antihistamines due to its ephedra content and stimulating properties, potentially amplifying side effects like increased heart rate or anxiety. It is important to consult with a healthcare provider or TCM practitioner before combining it with over-the-counter cold medications, antivirals, or prescription respiratory treatments. Timing of doses should be separated to minimize interaction risk.

### Who benefits most from Ma Xing Shi Gan Tang—acute or chronic respiratory conditions?

Ma Xing Shi Gan Tang is traditionally used for acute respiratory conditions, particularly those with excess heat and phlegm such as acute bronchitis, pneumonia, or asthma flare-ups, rather than long-term chronic management. Its formula is designed to rapidly clear heat and open airways, making it most effective in the early to intermediate stages of infection or acute episodes. Chronic conditions may require different herbal formulations or long-term protocols tailored by a TCM practitioner.

### What does clinical research show about Ma Xing Shi Gan Tang's effectiveness compared to modern respiratory treatments?

Clinical studies indicate that Ma Xing Shi Gan Tang demonstrates approximately 40% improvement in breathing capacity and shows comparable effectiveness to certain conventional bronchodilators for asthma symptoms, though research quality and sample sizes vary. Modern clinical trials on this traditional formula are limited compared to pharmaceutical standards, and most evidence comes from traditional use and smaller studies published in TCM journals. Western respiratory specialists typically recommend discussing this formula alongside conventional treatment, as it may complement but should not replace prescribed medications for severe asthma or acute respiratory distress.

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