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    Other Names:

    Bladderwrack, Brown Marine Algae, Brown seaweed, Egg Wrack, Hebridean Seaweed, ID-alG, Irish Brown Seaweed, Kelp, Knotted Wrack, Norwegian Kelp, Rockweed, Tasco.

    ASCOPHYLLUM NODOSUM Overview Information

    Ascophyllum nodosum is a type of brown seaweed. It is found along the shorelines in cold areas of the world, such as Northern Canada, United States, and Europe. Ascophyllum nodosum is now protected in many countries because of over-harvesting for a chemical called alginate.

    Ascophyllum nodosum is taken by mouth for dental health, weight loss, or as a source of the mineral iodine. Don't confuse Ascophyllum nodosum with other kinds of seaweed like Bladderwort, Blue-green Algae, Brown Algae, Fucus vesiculosus, or Laminaria, or with the chemical Algin that comes from seaweed.

    How does it work?

    Ascophyllum nodosum contains nutrients such as large sugars (carbohydrates), fats, and the mineral iodine. Ascophyllum nodosum might help the body kill cancer cells and reduce swelling.

    ASCOPHYLLUM NODOSUM Uses & Effectiveness What is this?

    Insufficient Evidence for:

    • Tooth plaque. Early research shows that taking Ascophyllum nodosum (ProDen PlaqueOff) might help to reduce the build-up of plaque on the teeth.
    • A mild form of gum disease (gingivitis). Early research shows that taking Ascophyllum nodosum (ProDen PlaqueOff) does not prevent gingivitis.
    • Iodine deficiency. Ascophyllum nodosum contains iodine. Early research shows that taking Ascophyllum nodosum can increase iodine levels in women who have low levels of iodine in the body.
    • Obesity.
    • Stomach or intestinal problems.
    • Other conditions.
    More evidence is needed to rate the effectiveness of Ascophyllum nodosum for these uses.

    ASCOPHYLLUM NODOSUM Side Effects & Safety

    When taken by mouth: Ascophyllum nodosum is POSSIBLY SAFE for adults when taken daily for up to 6 months. Side effects are rare but might include stomach problems. Ascophyllum nodosum can accumulate high levels of heavy metals. Purchasing a product that is certified as being free of heavy metals can reduce the risk of heavy metal exposure.

    Special Precautions & Warnings:

    Pregnancy and breast-feeding: There isn't enough reliable information to know if Ascophyllum nodosum is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.

    ASCOPHYLLUM NODOSUM Interactions What is this?

    We currently have no information for ASCOPHYLLUM NODOSUM Interactions


    The appropriate dose of Ascophyllum nodosum depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for Ascophyllum nodosum. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

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    Conditions of Use and Important Information: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

    This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version. © Therapeutic Research Faculty 2009.

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