Every order placed during July will contain a FREE jar of Pelvetia Pieces worth £9.75
(one per household, while stocks last)
One capsule provides twice the Recommended Daily Amount (RDA) of naturally chelated iodine

60 Capsules :: 2 Months Supply



Buy 3, Pay £22.75 Each

SAVE £3.60


Buy 6, Pay £21.95 Each

SAVE £12.00


In Stock
Biodynamic Agricultural Association Certified ProductSeagreens® are registered with the Vegan Society as complying with their Animal Free StandardsSustainably Wild Harvested Product

Seagreens® Iodine+ Capsules

Iodine contributes to:

  • The normal production of thyroid hormones and normal thyroid function
  • The normal growth of children
  • The maintenance of normal skin
  • Normal energy yielding metabolism
  • Normal cognitive function
  • Normal functioning of the nervous system
  • Ideal for Vegans who can be lacking in iodine

Seagreens® Iodine+ Capsules

Iodine Infographic

© Seagreens

There is no better natural iodine supplement than Seagreens Iodine+ capsules. Each capsule contains 350µg naturally occurring iodine (twice the RDA), in a whole food form.

Whats more, Seagreens Iodine+ capsules also provide a comprehensive range of vitamins, minerals and trace elements, all synergistically combined in their natural state, easily absorbed by your body.

Why is it called Iodine Plus?

The + is that Seagreens® is also naturally rich in all the minerals and micronutrients needed for the proper transport and metabolism of iodine including selenium, tyrosine, zinc, copper, vitamins A, B2, B3, B6 and C. This is because the Seagreens® seaweed is an outstandingly balanced whole food.

One vegan capsule provides about 350µg of naturally chelated iodine (twice the RDA) plus the full micronutrient balance for healthy metabolism in a whole food with nothing added or extracted.

In Seagreens® Ascophyllum nodosum ‘kelp’ the organic iodine is easily absorbed, stable, naturally chelated and colloidal. As most iodine is from dairy and meat, this is ideal in vegan, vegetarian, allergy and intolerance diets.

The whole body and nervous system needs iodine, not just the thyroid, especially under stress and women more than men - any excess will simply be eliminated.

Why is Seagreens® iodine so important?

In Seagreens® the iodine is naturally bound to protein ions, so that as it travels through the body it remains stable and can be unbound¹ and used as and when the body has need of it. Iodine is one of the most important elements and a vital food for the thyroid gland, where most of our body's iodine is stored. The thyroid in turn regulates our hormone system, which controls all the key biological functions.

Dietary iodine deficiency

Iodine deficiency even in Britain may be more widespread than is currently realised because over-used soils and new artificial growing mediums may be deficient in the micronutrients like iodine. Thousands of people in Britain and elsewhere, suffer from hypo- (underactive) or hyper- (overactive) thyroid, both of which require a proper nutritional balance.

Iodine deficiency can also be attributed to a recent trend to avoid table salt (which is legally required to be fortified with added iodine). Natural sea salt is mineral rich but is low in iodine.

However, Seagreens Mineral Salt provides the minerals of sea salt together with the minerals and iodine of seaweed.

There is no single (or sure) diagnostic test, symptoms can vary widely, and diagnosis is difficult even for experienced clinicians.

Especially in mild cases, patients may go for years without diagnosis. In exceptional circumstances, the thyroid may be incapacitated, or cancerous in which case it may be removed.

In such cases additional iodine is normally inappropriate, but otherwise the additional iodine contributes to the normal production of thyroid hormones and normal thyroid function. There is no universal agreement on a maximum safe daily intake.

In the last 50 years, runner beans have lost 100% of their sodium, watercress 90% its copper, broccoli 75% its calcium. Levels of other important minerals including magnesium, iron, phosphorous and potassium have also plummeted² - Daily Mail, March 2001

Appropriate levels of intake

Main iodine sources in European diets are dairy products, meat and eggs, so iodine is especially important for vegans and vegetarians. Goitrogens in vegetables of the cabbage family may also reduce absorption of iodine. Surveys of British adults show mean daily intakes of about 200µg per person per day from a healthy¹ diet, less for women, and inadequate average intakes of about 80µg per day in vegans.

³Edible seaweeds...could be a useful source for vegans if used in moderation² - Manual of Nutrition (MAFF - Ministry of Agriculture Fisheries & Food, 1995).

The UK Government recommend that the safe upper intake should not exceed 1,000µg (1mg) per adult over the age of 10 per day - or 17µg (0.017mg) per kilogram (1991).

The UK Health Food Manufacturers¹ Association has adopted a voluntary maximum for nutritional supplements of 500µg (0.5mg) iodine per daily dose. This approximates to an intake of about 750µg (0.75mg) per day if the existing population average daily intake is added to the HFMA figure.

Endorsed and used by professional bodies

Approved by the Vegan Society since 1998. Approved by the Vegetarian Society since 1998. Approved and prescribed by NHS, ION and BANT nutritionists, BHMA and NIMH medicinal herbalists and NHS dieticians. Approved by the British Society for Mercury-Free Dentistry since 2000 and prescribed by member dental practices for post-operative detoxification in amalgam extraction.

All Seagreens® products are approved by Demeter to standards for wild food products in line with UK and EC biodynamic and organic standards.

2003/2004: Seagreens® are produced and processed to standards in accord with EC Demeter (Biodynamic Agricultural Association) and OrganicRegulations 2092/1.

Recommended daily intake:

1 capsule provides adequate iodine; half for children under 10.

A pure, natural, assimilable source of Iodine

Iodine is one of the most important elements and a vital food for the thyroid gland, where most of our body's iodine is stored. The thyroid in turn regulates our hormone system, which controls all the key biological functions.

Thyroid hormones, with iodine as an essential ingredient, control normal growth and development, and many other functions including immunity and fertility. Thyroxine and triiodothyromine are necessary for metabolic rate, cellular metabolism, and the integrity of connective tissue.

During the first 3 months of pregnancy iodine is particularly important to the fetus for development of the nervous system.

In the UK, 76% of school aged girls and 66% of adult women are iodine deficient**

Seagreens® is authorised by the European Food Standards Agency to claim the following health benefits:

  • Iodine contributes to the normal production of thyroid hormones and normal thyroid function
  • Iodine contributes to the normal growth of children
  • Iodine contributes to normal cognitive function
  • Iodine contributes to normal energy-yielding metabolism
  • Iodine contributes to normal functioning of the nervous system
  • Iodine contributes to the maintenance of normal skin

** Download the Seaweed Health Foundation Iodine Fact Sheet  for more information and for references to the studies which revealed the above results.

Nutritional Profile - Seagreens® Iodine+ Capsules


100% sustainably wild harvested ascophyllum seaweed - nothing added or extracted.

Iodine+ Capsules per half gram (1 x 500mg capsule) provides:

Protein: 29.50mg

Carbohydrate: 277.50mg of which Dietary Fibre 248.75mg (including the non-starch polysaccharides Algin, Fucose, Fucoidan, Mannitol, Methylpentosans, Laminarin, Mannuronic Acid and Chlorophyll

Enzymes: (units) Carbohydrase 22.5 (pH 8.0), Protease 281 (pH 8.0)

Essential Fatty Acids (EFA) : Total EPA + DHA Omega-3 0.39mg, Omega-3 0.85mg, Omega-6 2.56mg, Omega-9 6.25mg, Alpha-linolenic Acid 0.25mg, Eicosapentenoic Acid 0.39mg

Vitamins: A (antioxidant carotenoids including beta carotene, fucoxanthin and violaxanthin) 89µg, B1 (thiamin) 0.3µg, B2 (riboflavin) 0.05µg, B3 (niacin or vit PP) 5.9µg, B9 (folate) .29µg, B12 (cobalamin) 0.0005µg, C (antioxidant) 49.6µg, D (cholecalciferol) 0.005µg, E (antioxidant) 13.5µg, H (biotin) 0.15µg, K (menadione) 5µg

Minerals: Calcium 6.75mg, Magnesium 4.12mg, Nitrogen 4.75mg, Phosphorus 0.35mg, Potassium 9.1mg, Sodium 17.25mg, Sulphur 0.03mg

Trace elements: Antimony 0.03µg, Barium 3.03µg, Boron 49µg, Cerium 0.06µg, Cobalt 0.32µg, Copper 0.28µg, Germanium 0.04µg, Gold 0.03µg, Iodine 356µg, Iridium trace, Iron 59.5µg, Lanthanum 0.03µg, Lithium 0.17µg, Manganese 12.5µg, Molybdenum 0.32µg, Palladium 0.38µg, Platinum trace, Praseodymium 0.06µg, Rhemium 0.07µg, Rubidium 3µg, Ruthenium trace, Scandium trace, Selenium 0.02µg, Silicon 30µg, Silver 0.03µg, Thallium trace, Tellurium trace, Titanium 1.04µg, Vanadium 1.8µg, Zinc 22µg. A total of 67 mineral elements have been analysed in all Seagreens human food ingredients

Amino Acids: Alanine 0.89mg, Arginine 0.58mg, Aspartic acid 1.65mg, Cystein + Cystine 0.38mg, Glutamic acid 2mg, Glycine 1.93mg, Histidine 0.20mg, Isoleucine 0.53mg, Leucine 0.98mg, Lysine 0.63mg, Methionine 0.38mg, Phenylalanine 0.58mg, Proline 0.89mg, Serine 0.63mg, Threonine 0.64mg, Tryptophan 0.24mg, Tyrosine 0.33mg, Valine 0.73mg

Betaines: Glycine Betaine trace, Gamma Amino Butyric Acid Betaine trace, Delta Amino Valeric Acid Betaine trace, TML (Laminine) trace, L-Carnitine trace, Trigonelline trace, enzymes, lipids, lioproteins and many compound which cannot be artificially replicated or formulated

Note: 1g (gram) = 1000mg (milligram) = 1,000,000µg (microgram)

Nutritional data reproduced by permission of the Copyright holder, Seagreens Ltd, Great Britain.


Customer Reviews of Seagreens® Iodine+ Capsules

Highly recommended

I have been managing an under active thyroid for a few years now and I stopped taking the seagreens seaweed earlier this year and my reading was 21!!!!

After only 3.5 months on 2 tablets a day the reading is at 6.4. - what a difference and even the nurse and doctor are astounded.

I'm hoping it will go back to normal at some point with the magic of plant power...

From:  Suky Dhami of Coventry on 30/12/2016 14:08:51

Update regarding seagreens and under active thyroid

This is my third review on the subject, but if it helps anyone in the same position I would be delighted. My last review , was over 3 years ago and I have been taking Seagreens Iodine Plus for over 4 years now.

This time last year my U.A.T reading went up quite a bit, and I was very worried I would at last have to resort to artificial thyroid medication. My doctor gave me the chance to try to get it down to borderline again so I contacted Seagreens to ask if I could take 2 tablets a day rather than one. They said it was fine to do that and consequently after 3 months my level came back to borderline again.

It has remained there and I am hoping it will continue to do so, although I have to have regular blood tests every three to six months.

From:  CHERYL WORSLEY of SOMERSET on 03/09/2014 20:20:22

I have HALVED my thyroid medication intake

Just had to register my thanks - after being on your Iodine+ capsules for a year, I have HALVED my artificial thyroid hormone medication intake from the GP. I have reduced from 150mcg to 75mcg! Please continue your good work.

From:  L. Norfolk of Suffolk on 02/09/2013 11:40:54

Keeping Under-Active Thyroid under control naturally

I have been taking Seagreens Iodine+ Capsules for a year along with other Vitamins and Minerals [B 50 Complex, Vit C, Vit E, Selenium, Magnesium and Zinc] also using a non Flouride toothpaste and not eating Cruciferous Vegetables [Cabbage, Brocolli, Sprouts and Cauliflower]. This has been under doctor's supervision who knew I didn't want to take artificial thyroid medication for life, and my Under-Active Thyroid reading has come down from 7.00 to 4.66[normal] I am really delighted.

From:  C W of Somerset  on 27/04/2011 13:39:10

Positive results from seagreens

I was told five years ago that I was borderline underactive thyriod [reading 5 ]. I started taking ordinary kelp as I did not want to have to go onto artificial thryroid hormone medication for life.

Three months ago I had to have another blood test and my doctor said I had gone up to a reading of 7. I told her I still wanted to try and beat this the natural way so I started taking seagreens iodine. I also had free advice from a nutritionist at 'natures best' who advised me to take vitamins b,c,and e. I also stopped eating 'cruciferous' veg [brocali,cabbage,cauli,and sprouts] which I read should be avoided with underactive thyroid.

My doctor sent for me to have another blood test after a further three months and I was delighted to say I had gone down to a reading of 5.9. I feel really positive now I can help myself with natural products.

From: Mrs Cheryl Worsley of Somerset on 16/09/2010 19:29:49