Seagreens® Information Service  0845-0640040 / +44-1444-400403
Why Seagreens®?

Micronutrient sufficiency

Seaweeds produced to a very high standard provide a natural source of all the minerals and trace elements (many deficient in large populations), rare vitamins, ideal ratios of Omega fatty acids, valuable antioxidants, and soluble dietary fiber.

For 25 years the Seagreens® project has been producing our native wild seaweeds specifically for human nutrition, certified organic from the start and from 2016 to the Nutritious Food Seaweed standard by the Biodynamic Association. 

Nutritious seaweeds are best used in tiny amounts - a few grams, less than a teaspoon - as a daily ‘dietary supplement’. This has been their traditional use in Japan and elsewhere. Larger amounts, weekly or still less frequently, cannot achieve their potential contribution to human nutrition. 

Daily use is important because these most valuable micronutrients are not readily manufactured, nor stored, in the body. Seagreens makes it easy to include between a quarter of a teaspoon (1 gram) and a teaspoon (4 - 5 grams) in the daily diet as dried granulated or chopped pieces, or in vegetable capsules, safe for all ages in permanent daily use.

Japanese use of about 4.5 grams in the traditional daily diet, we consider to be a therapeutic dose for shorter periods of use in nutritional therapy. More than this is seldom necessary nor desirable, and seaweed is not a cheap vegetable to produce.

Seaweeds for human nutrition must meet particularly rigorous safety and quality standards, their composition must be known and closely monitored, and the nutritional profile must be consistent, with no harmful contaminants or allergens. As far as we know Seagreens® are the only seaweeds independently certified non-allergenic, and the nutritional profile of each product is published at

Only in this way, can you know what you are eating, and nutritional therapists be confident of potential outcomes. 

Seagreens® are traceable to sustainable wild beds in the British Isles and Nordic region which are selected and husbanded to conserve the native stock. Independent analysis of every harvested batch ensures the quality of every nutrition product.

Please click here for our booklet '25 Years In Seaweed Nutrition'.

A pictorial book, tracing the development of Nutritious Food Seaweed, 'Something for Everyone', is available from Seagreens.Shop. Sales contribute to the work of the Seaweed Health Foundation.

Why Seagreens Consumer Presentation v4 - view here
Click on the seaweed for more information

Working together - micronutrients and immunity

Click here for an authoritative international assessment of the important role of micronutrients in immunity, all of which are in every Seagreens® product. Additional supplementation of certain nutrients is also recommended, such as Vitamin D.

A recent UK study* shows that "a significant proportion of women of all ages have disturbingly low levels of intake of folate, vitamin D and A, riboflavin (B2), iron, calcium, magnesium, potassium, iodine, selenium and zinc, most below the Lower Reference Intake (the bare minimum to keep standing). This is the time when our health authorities should be insisting that everyone - especially those in higher risk groups - should get tested. Not for SARS, but for the multiple micronutrient inadequacies which the British public lives with....".
- Simon Martin, Editor, IHCAN (Integrative Healthcare and Applied Nutrition), August 2020 (Target Publishing).
*please click here for more

Please click on the seaweed picture for a brief introduction to Seagreens® or click here for stockists.

To review our nutrition products, please click here, and explore the nutritional profile of each Seagreens® product.

For further information on quality assurance, please click here.

Take a break and visit the Seaweed Health Foundation to watch 'the rising tide' of nutritious food seaweed.


Ascophyllum (Oak Wrack or Knotted Wrack) supports gastrointestinal health and digestion, is a natural prebiotic (food for beneficial gut bacteria), and with other dietetic measures contributes to weight regulation. It is high in polyphenols, helping to diminish the risk of chronic diseases.

Fucus (Bladder Wrack) decreases fat absorption, is even higher in antioxidants, and supports bowel and liver function.

Both species are rich in the soluble mineral iodine, which contributes to normal skin, thyroid, nervous system and cognitive function, energy-yielding metabolism, and normal growth in children. 

Pelvetia (Channelled Wrack) is exceptionaly rich in polyunsaturated Omega fatty acids, and almost ideal ratios between them.

Innovative research and production in the British Isles and Nordic region since 1997, has made Seagreens® a leading authority on the composition and health benefits of these native wild species in particular.

Each seaweed contributes a unique breadth and balance of micro and other nutrients to complement and complete a normal land based diet. 

Even if seafood is included, ocean minerals are the ‘missing ingredient’ including natural antibacterial and antiviral elements like germanium, gold, iodine, selenium, silver and zinc. 

Each product is easy to use, can be mixed and matched, and the amount varied to suit your nutritional aims, if necessary with advice from a nutritional therapist.

Healthcare professionals and nutritionists, please browse our nutrition research, or click here for more healthcare information.

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If you'd like some help through this information, please email and ask for Practitioner Information Guidelines, a short document with links to specific points of interest. 

Nutrition and food product manufacturers, please click here for information about our unique range of seaweed ingredients.