Echinacea Purpurea Angustifolia - Common Cold, Herb, Root, Extract, Benefits, Information

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Echinacea Purpurea Angustifolia - Common Cold, Herb, Root, Extract, Benefits, Information

A review published in the July, 2007 issue of The Lancet Infectious Diseases concluded that echinacea, an herb commonly used to help prevent and treat the common cold, is effective at both reducing cold incidence and duration.  Although the herb has been the subject of controversial study findings, millions of people continue to rely on echinacea to help protect them during cold and flu season.

For the meta-analysis, researchers at the University of Connecticut in Storrs, and Hartford Hospital, also in Connecticut, selected 14 randomized, placebo-controlled trials which evaluated the effect of echinacea on cold incidence among a total of 1,356 participants, and its effect on cold duration in 1,630 subjects.  The studies selected examined the effects of Echinacea purpurea, Echinacea angustifolia, and Echinacea pallida.

The analysis found that echinacea use reduced the risk of contracting a cold by 58 percent, and decreased cold duration by an average of 1.4 days.  Subgroup analyses examining a specific brand of echinacea, concomitant supplement use, method of cold exposure, and other factors continued to demonstrate a protective effect.  (The one study that combined echinacea with other supplements found an 86 percent reduction in cold incidence.)

All three species of echinacea contain water-soluble polysaccharides, a lipophilic fraction, caffeoyl conjugates, and flavonoids.  However, it is not known which compound or compounds are responsible for echinacea's ability to stimulate immune function.

"An analysis of the current evidence in the literature suggests that echinacea has a benefit in decreasing the incidence and duration of the common cold;  however large-scale randomized prospective studies controlling for variables such as species, quality of preparation and dose of ecinacea, method of cold induction, and objectivity of study endpoints evaluated are needed before echinacea for the prevention or treatment of the common cold can become standard practice," the authors conclude.

Supplement Facts:  60 caps/250 mg each.   Serving Size - 1 capsule.  Servings / Container - 60.  Amount / Serving

Echinacea angustifolia and Purpurea flower and stem powder extracts

250 mg

Standardized (4%) to supply 10 mg of echinosides


Other ingredients: rice flour, gelatin, and water.


Dosage and Use

One to two capsules daily of echinacea purpurea angustifolia herb root extract for healthy people,

Two capsules night and morning of echinacea purpurea angustifolia herb root extract otherwise,

Echinacea purpurea angustifolia herb root extract is thought to work best if cycled by taking it 10 to 14 days on and 4 to 7 days off,

Smaller doses of echinacea purpurea angustifolia herb root extract are included in Life Extension Herbal Mix and may be taken continuously.


Chronic use of high doses of echinacea may down-regulate the immune system of those with already compromised immune systems.  Therefore, chronically high doses are not recommended for those with autoimmune disorders.

  • Keep out of reach of children,

  • Do not exceed recommended dosage,

  • If you have a bad reaction or side effects, discontinue use immediately,

  • When using echinacea purpurea angustifolia herb root extract, please inform your physician.

More Information

Pricing Information:   Echinacea Purpurea Angustifolia


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