ephedra

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e·phed·ra

(ē-fed'ră),
Ephedra equisetina (family Gnetaceae). Ma huang; the plant source for the alkaloid ephedrine. Indigenous to China and India, it is 0.7% to over 1% ephedrine; also contains some pseudoephedrine.

ephedra

(ĭ-fĕd′rə, ĕf′ĭ-drə)
n.
1. Any of various usually shrubby gymnosperms of the genus Ephedra, having jointed green stems and small scalelike leaves, some species of which are used as a source of ephedrine.
2. A drug containing ephedrine derived from one of these plants, used in traditional Chinese medicine as a stimulant and decongestant and sold in the United States primarily as a dietary supplement for weight loss before it was banned because of toxic side effects in 2004. Also called ma huang.

joint fir

Chinese and Herbal medicine
A shrub, the stem of which contains ephedrine, which is a bronchodilator, diaphoretic, diuretic and vasoconstrictor; it is used to treat asthma, bronchitis, fever, fluid retention, hypotension, paraesthesias, to stimulate the central nervous system and to suppress the appetite.
 
Toxic effects
Ephedra should not be used in patients with cardiac or thyroid disease, diabetes or hypertension.

e·phed·ra

(e-fed'ră)
(Ephedra sinica and other spp.) An herbal supplement now banned in the United States, where it was used as a weight-loss supplement. Severe toxicities and adverse effects reported (e.g., stroke, cardiac arrest, seizure, psychotic attacks); over 800 reports of related illness; the compounds also included substances banned for use by athletes.
Synonym(s): ma-huang, Mormon tea, popotillo.
[L., horsetail, fr. G. ephedros, sitting on]

e·phed·ra

(e-fed'ră)
Ephedra equisetina;Ma huang; the plant source for the alkaloid ephedrine. Indigenous to China and India, it also contains some pseudoephedrine.
[L., horsetail, fr. G. ephedros, sitting on]
References in periodicals archive ?
According to the report, FDA has warned about at least eight of these 12 ingredients, some as long ago as 1993; those eight supplements were chaparral, colloidal silver, comfrey, country mallow, germanium, kava, lobelia and yohimbe.
"This is especially important if you take other medications," she adds, "as it is possible for supplements to interact with conventional drugs." Avoid taking these supplements, recently identified by the Consumers Union as being linked by clinical reports or case reports to serious side effects: aconite, bitter orange, chaparral, colloidal silver, coltsfoot, comfrey, country mallow, germanium, greater celandine, kava, lobelia, and yohimbe.