Benefits
Traditional Beverage Tea
Traditional use only, with no clinical research behind it. Brigham tea has a long history as a mild herbal beverage among Indigenous peoples of the Great Basin and among early Mormon settlers in Utah, valued for its earthy flavor and its place in regional folk traditions. This is a record of how people have used the plant, not evidence that drinking it does anything for health.
Distinct From FDA-Banned Ephedra Alkaloids
This is the single most important thing to know about this plant. Ephedra viridis (Brigham tea or Mormon tea) is a different species from Ephedra sinica (ma huang), the ephedrine-containing herb that the FDA banned from dietary supplements in 2004 after reports of serious cardiovascular events and deaths. A 2001 analytical survey of Ephedra chemistry (Caveney and colleagues, American Journal of Botany) did not detect ephedrine or pseudoephedrine in New World Ephedra species, including E. viridis. That absence is precisely why this plant does not act as a stimulant, so it should not be used in search of stimulant, energy, or weight loss effects. And because species identity and labelling cannot be assumed, anything sold simply as "ephedra" should be treated with caution.
Provides Tannins and Plant Phenolics
This describes what is in the plant, not what it does for you. The aerial stems contain tannins and other phenolic compounds. No study has measured whether drinking Brigham tea changes antioxidant status, or any other health measure, in people.
Traditional Diuretic Use (Folklore, Not Tested)
Traditional use only. Some communities have used Brigham tea as a mild diuretic and as a beverage for urinary and kidney complaints. No human trial has tested this, so there is no evidence it changes urine output, kidney function, or any urinary condition. It is not a treatment for a kidney or urinary problem and should never replace medical care. The Kidney/Urinary Tract category on this page rests on tradition alone, not on clinical evidence.
Mechanism of action
Tannin and Polyphenol Astringency
Tannins in the stems give the tea its astringent, drying taste. Antioxidant activity has not been measured for this species in either cited paper, both of which simply catalogued plant chemistry, and there is no evidence of any drug-like action in the body.
Absence of Sympathomimetic Alkaloids
Unlike E. sinica, comprehensive secondary-chemistry surveys have not detected ephedrine-class alkaloids in New World Ephedra species including E. viridis, indicating the plant does not act through adrenergic stimulation.
Mild Diuretic Folk Mechanism
This is folklore, not a measured mechanism. Traditional kidney and urinary uses are sometimes explained as a mild diuretic effect, but no study has measured urine output, kidney function, or how any compound in this plant behaves in the human body.
Clinical trials
Not a clinical trial. This is a laboratory analysis of plant chemistry (Caveney 2001, American Journal of Botany). No people took part and no health outcome was measured.
No human participants. Plant samples from multiple Ephedra species, including the New World species E. viridis and E. nevadensis.
Ephedrine-class alkaloids were not detectable in New World Ephedra species; instead, these species contain other nitrogen-containing compounds such as 6-hydroxykynurenate. This is a chemistry result only: the work identified what is in the plant and did not test any effect in people.
Not a clinical trial. This is a review of laboratory analysis methods and reported plant composition (Ibragic and Sofic 2015).
No human participants. A review of published laboratory analyses of Ephedra chemistry.
The review confirms that ephedrine alkaloid content varies dramatically across species, with E. sinica being the dominant alkaloid-bearing species; many ornamental and North American species, including E. viridis, are described as containing little or no ephedrine.