Ascophyllum Nodosum Review

Editor's Review: 3.7 / 5.0

What You Should Know

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Ascophyllum Nodosum is the scientific classification for seaweed, brown seaweed to be precise. This plant also has many other names including “rockweed” and “Norwegian Kelp.” Its preference for colder waters means that it is especially found in the northern parts of the Atlantic Ocean.

Similar to other seaweeds, it has a holdfast at its base and it grows upward in a complicated pattern of fronds each containing air bladders at regular intervals which cause the plant to float. It can be anywhere from one meter to over 30 meters long and can live for decades though it is not fertile for up to five years.

List of Ingredients

The chemical makeup of Ascophyllum Nodosum is vast and complex. The trace mineral content is extremely high. It also contains significant amounts of iodine, potassium, magnesium, calcium, iron, B-vitamins and vitamin C. Other minerals that make the list include bromine, algin, proteins, mannitol, silicon, nitrogen, phosphorus, cellulosics, selenium, zinc, boron, laminarin, vanadium, molybdenum, and beryllium.

Product Features

Ascophyllum Nodosum is sold as an herbal supplement and is usually called Kelp tablets or capsules. These are widely available from suppliers of herbal supplements and even in the nutrition section of many grocery stores. It comes in varying dosages anywhere from 200mg to 600mg and should be taken with a glass of water.

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  • For one thing, it is a very inexpensive way to ingest a wide variety of important vitamins and minerals. Many western diets are lacking in basic areas.
  • It also claims to be a very effective way of increasing your iodine intake for those suffering from thyroid problems, specifically goiter.
  • Most capsules also have the attraction of being all-natural for those who are looking for organic supplements.


  • Ascophyllum Nodosum may be a little too high in iodine. Many kelp capsules contain an average of 1000mcg of iodine while the recommended daily amount in the United States is 150mcg and 2000mcg is viewed as dangerous.
  • Also this product appears to have no effect on weight loss. While some nutritionists may believe that it increases metabolic activity, the increase does not seem to be notable and does not appear to significantly affect weight loss.


Ascophyllum Nodosum has some serious benefits by providing a nutritionally rich, organic supplement to those with thyroid problems caused by low iodine. But the intense levels of iodine found in Kelp capsules also make it a potential problem on the other side. It should certainly be avoided by pregnant woman and nursing mothers as well as anyone with hyperthyroidism, heart problems or high blood pressure. As always it is a good idea to consult with your physician before taking any new supplements.

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Editor: Paul Blake

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One User Review about Ascophyllum Nodosum

  • 1
    mirza Atif Baig

    please information for agriculture used in pakistan.