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Ephedra / Ma Huang (Ephedra sinica)
Materia Medica
Family: Ephedraceae
Common names: Ephedra, Ma Huang, Chinese Ephedra, Mormon Tea (related species)
Classical names: Ma Huang, Cao Ma Huang
Part used: Aerial stems (dried)
Growth habit: Low branching shrub with jointed green stems, scale-like leaves
Primary tradition: Traditional Chinese Medicine
Actions & Energetics
Traditional Chinese classification: Acrid, slightly bitter, warm; enters Lung and Bladder meridians
Traditional actions include promoting sweating, releasing the exterior (wind-cold), calming wheezing, and promoting urination. In Western terms it is a strong bronchodilator and stimulant due to its alkaloids.
Botanical Description
Ephedra sinica is a dioecious, low-growing shrub with green, jointed, photosynthetic stems and very small scale-like leaves. It grows in arid and semi-arid regions of northern China, Mongolia, and adjacent areas. The medicinal material is the dried above-ground stems. Related Ephedra species exist worldwide; alkaloid content varies significantly by species and growing conditions.
Traditional Indications
In Traditional Chinese Medicine, Ma Huang has been used for more than two thousand years, recorded in the Shennong Bencao Jing and later classics, for wind-cold exterior patterns with chills, fever, absence of sweating, nasal congestion, and wheezing. It appears in classical formulas such as Ma Huang Tang. Traditional use is within structured formulas and diagnostic frameworks, not as a single-herb casual stimulant.
Preparations & Dosage
Traditional Chinese practice uses the dried stems in decoctions or as part of multi-herb formulas. Modern monographs and older Western sources have listed small tincture or decoction amounts calculated around alkaloid content. Because of the potency of ephedrine alkaloids and regulatory status in the United States, this guide does not provide household dosing instructions for self-treatment.
In the United States, the FDA’s 2004 rule declares dietary supplements containing ephedrine alkaloids adulterated. Traditional use in Chinese medicine and pharmaceutical use of isolated ephedrine under medical supervision are distinct from unregulated supplement use.
Constituents
Primary alkaloids include ephedrine, pseudoephedrine, norephedrine, norpseudoephedrine, methylephedrine and related compounds. Additional constituents include flavonoids, tannins, polysaccharides, volatile oils, and organic acids. Alkaloid concentration varies with species, part, harvest, and processing.
Modern Research
Ephedrine and related alkaloids have well-documented pharmacological effects as sympathomimetics: they increase heart rate and blood pressure and relax bronchial smooth muscle. Clinical reviews of ephedra-containing weight-loss products found only modest short-term effects alongside clear cardiovascular and central-nervous-system safety concerns. The plant remains historically and pharmacologically important as the original botanical source of ephedrine.
History, Folklore & Spiritual Use
Ma Huang is one of the oldest recorded herbs in Chinese materia medica, appearing in texts dating back more than two millennia. Its Chinese name refers to its yellow-astringent character. In modern times it became the source of the pharmaceutical ephedrine. Folklore and traditional use center on its power to open the exterior, move stagnation, and relieve respiratory obstruction rather than on metaphysical or divinatory associations.
Materia Medica Summary
Ephedra / Ma Huang (Ephedra sinica) is an ancient Chinese herb whose dried stems have been used for wind-cold patterns and respiratory complaints. It contains potent ephedrine alkaloids that account for both its traditional and modern pharmacological activity. In the United States, dietary supplements containing these alkaloids are restricted. Its place in the materia medica is historical and formula-based rather than as a casual home remedy.