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2003/03/04, 11:36 AM
Here is a copy of an article that I wrote not too long ago:
"...Ephedra is an herbal product (ma huang) that contains two alkaloids, ephedrine and pseudoephedrine. Similar to its chemical counter-part Epinephrine in its pathways (however slower), Ephedrine, the main constituent, is a bronchodilator and activates the sympathetic nervous system by stimulating alpha and beta1 and beta2 receptors. It has valuable antispasmodic properties, acting on the air passages by relieving swellings of the mucous membrane. Pseudoephedrine is a nasal decongestant and has less stimulating effect on the heart and blood pressure. Physicians use these alkaloids to treat bronchial asthma, bronchitis, emphysema, persistent coughs, wheezing and shortness of breath. Ma huang has been used to help the body to break fevers and clear blocked sinuses as well. The alkaloids are also effective in treating allergic skin reactions such as hives, relieve general body pain and treat low blood pressure, rheumatism and narcolepsy.
Because of its stimulating effect on the nervous system, ephedra can be found in some popular weight loss and energy products. For dieters it suppresses the appetite and stimulates the thyroid gland, which stimulates metabolism. Recently ma huang has been the subject of scientific research for obesity because of its thermogenic fat-burning effect on dietary intake. Ephedra can cause peripheral vasoconstriction, elevation of blood pressure and cardiac stimulation, and is often combined with other tonic herbs to help counteract these effects.
Ma huang is also found in "energy" products that may give athletes extra energy without draining their reserves. People also indicate an increase in alertness and perception. Similar to the diet formulas, it is often combined with ingredients such as kola nut or guarana, both of which contain caffeine. Concerns over the potency of this herb and its isolated alkaloids have prompted increased regulatory scrutiny and industry label warnings. Contraindications and possible side effects should be listed on the bottle. Contraindications include general weakness, poor digestion, high blood pressure, nervousness, sleeplessness, cardiac arrhythmia's and heart disease. It should not be used if you are pregnant or nursing..."
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Michael
"Trample the weak; hurdle the dead!"
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