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    Usnea

    Usnea



    Uses

    Common names:
    Old Man’s Beard
    Botanical names:
    Usnea barbata

    Parts Used & Where Grown

    Usnea, also known as old man’s beard, is not a plant but a lichen—a symbiotic relationship between an algae and a fungus. The entire lichen is used medicinally. Usnea looks like long, fuzzy strings hanging from trees in the forests of North America and Europe, where it grows.

    What Are "Star" Ratings?

    Our proprietary “Star-Rating” system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.

    For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.

    3 Stars Reliable and relatively consistent scientific data showing a substantial health benefit.

    2 Stars Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.

    1 Star For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support.

    This supplement has been used in connection with the following health conditions:

    Used for Why
    1 Star
    Abnormal Pap Smear (Echinacea, Goldenseal, Marshmallow, Myrrh, Yarrow)
    Refer to label instructions
    Though not proven in clinical trials, these herbs are used for their antiviral actions and thought to stimulate tissue healing. Consult a healthcare professional.

    Several other herbs have been used as part of an approach for women with mild cervical dysplasia, including Reference myrrh, Reference echinacea, Reference usnea, Reference goldenseal, Reference marshmallow, and Reference yarrow.2 These herbs are used for their antiviral actions as well as to stimulate tissue healing; they are generally administered in a suppository preparation. No clinical trials have proven their effectiveness in treating cervical dysplasia. A doctor should be consulted to discuss the use and availability of these herbs.

    1 Star
    Common Cold and Sore Throat
    Refer to label instructions
    Usnea has a traditional reputation as an antiseptic and is sometimes used for people with common colds.

    Reference Elderberry has shown antiviral activity and thus may be useful for some people with common colds. Elder flowers are a traditional diaphoretic remedy for helping to break fevers and promote sweating during a cold. Reference Horseradish has antibiotic properties, which may account for its usefulness in easing throat and upper respiratory tract infections. The resin of the herb Reference myrrh has been shown to kill various microbes and to stimulate macrophages (a type of white blood cell). Reference Usnea has a traditional reputation as an antiseptic and is sometimes used for people with common colds.

    1 Star
    Cough
    Refer to label instructions
    Usnea contains mucilage, which may be helpful in easing irritating coughs.

    The mucilage of Reference slippery elm gives it a soothing effect for coughs. Reference Usnea also contains mucilage, which may be helpful in easing irritating coughs. There is a long tradition of using Reference wild cherry syrups to treat coughs. Other traditional remedies to relieve coughs include Reference bloodroot, Reference catnip, Reference comfrey (the above-ground parts, not the root), Reference horehound, Reference elecampane, Reference mullein, Reference lobelia, Reference hyssop, Reference licorice, Reference mallow, (Malvia sylvestris), Reference red clover, Reference ivy leaf, Reference pennyroyal (Hedeoma pulegioides, Mentha pulegium), Reference onion, (Allium cepa), and Reference plantain (Plantago lanceolata, P. major). None of these has been investigated in human trials, so their true efficacy for relieving coughs is unknown.

    1 Star
    Infection
    Refer to label instructions
    Usnea is an herb that directly attack microbes.

    Traditional Use (May Not Be Supported by Scientific Studies)

    Due to its bitter taste, usnea stimulates digestion and was historically used by herbalists to treat Reference indigestion. It was also reportedly used over 3,000 years ago in ancient Egypt, Greece, and China to treat unspecified infections.1

    How It Works

    Common names:
    Old Man’s Beard
    Botanical names:
    Usnea barbata

    How It Works

    Usnic acid gives usnea its bitter taste and also acts as an antibiotic in test tube studies.3 Test tube studies have suggested an anti-cancer activity for usnic acid. However, this action has not been sufficient to warrant further investigation in humans.4 Usnea also contains mucilage, which may be helpful in easing irritating Reference coughs. Again, this has not been studied in humans.

    How to Use It

    Usnea, 100 mg three times per day, can be taken in capsules.5 Tincture, 3–4 ml three times per day, can also be used.

    Interactions

    Common names:
    Old Man’s Beard
    Botanical names:
    Usnea barbata

    Interactions with Supplements, Foods, & Other Compounds

    At the time of writing, there were no well-known supplement or food interactions with this supplement.

    Interactions with Medicines

    As of the last update, no reported interactions between this supplement and medicines. It is possible that unknown interactions exist. If you take medication, always discuss the potential risks and benefits of adding a new supplement with your doctor or pharmacist.
    The Drug-Nutrient Interactions table may not include every possible interaction. Taking medicines with meals, on an empty stomach, or with alcohol may influence their effects. For details, refer to the manufacturers’ package information as these are not covered in this table. If you take medications, always discuss the potential risks and benefits of adding a supplement with your doctor or pharmacist.

    Side Effects

    Common names:
    Old Man’s Beard
    Botanical names:
    Usnea barbata

    There are no known side effects of usnea. It is considered safe for use in children. The safety of usnea during Reference pregnancy and breast-feeding has not been established.

    Related Information

    Usnea

    References

    1. Tilford GL. Edible and Medicinal Plants of the West. Missoula, MT: Mountain Press Publishing Company, 1997, 148–9.

    2. Hudson T. Women’s Encyclopedia of Natural Medicine. Lincolnwood, IL: Keats, 1999, 54.

    3. Weiss RF. Herbal Medicine. Beaconsfield, UK: Beaconsfield Publishers Ltd., 1988, 49.

    4. Evans WC. Trease and Evans’ Pharmacognosy, 13th ed. London: Baillière Tindall, 1989, 643.

    5. Gruenwald J, Brendler T, Jaenicke C, et al. (eds). PDR for Herbal Medicines. Montvale, NJ: Medical Economics, 1998, 1199–200.


    Last Review: 11-07-2012

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    The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2013.



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