Contains naturally occurring SULPHITES — from the organic spirulina and chlorella.
Iodine at 192µg (128% NRV) per capsule. If you have a thyroid condition or take thyroid medication, speak to your GP before use.
Most iodine in the average UK diet comes from dairy and meat — which leaves vegans, vegetarians and anyone on a halal, kosher or exclusion diet short of it. IoBio provides 192µg of iodine per capsule (128% NRV) from Soil Association certified organic seaweed, alongside six organic vegetables and herbs.
Iodine From Whole Seaweed, Not an Isolated Salt
Iodine here comes from two food-approved brown seaweeds — Ascophyllum nodosum and Fucus vesiculosus — rather than potassium iodide. The supplier's Ascophyllum is Seagreens®, sourced from the Scottish Outer Hebrides, and is the highest of the Seagreens® species for iodine content.
That matters practically: seaweed naturally contains the other minerals and micronutrients involved in iodine's transport and metabolism, including selenium, tyrosine, zinc, copper and vitamins A, B2, B3, B6 and C. An isolated iodine salt gives you the mineral alone.
Iodine's authorised claims — it contributes to normal cognitive function, normal energy-yielding metabolism, normal nervous system function, the maintenance of normal skin, the normal production of thyroid hormones and normal thyroid function, and the normal growth of children.
How Other UK Iodine Supplements Compare
Potassium iodide tablets — cheap, isolated, no co-factors. Effective for the iodine claim at low cost, but an isolated salt with none of the accompanying seaweed minerals, and rarely organic.
Generic kelp capsules — variable, rarely organic. Widely available but iodine content varies considerably between batches and few are certified organic or specify the species.
Seagreens® own-brand — excellent, single ingredient. The reference brand for food-grade seaweed, sold as seaweed alone without the vegetables and herbs.
What's in Every Capsule
Each capsule is a 590mg blend.
EU-authorised mineral claims:
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Iodine — 192µg (128% NRV) · entirely from the organic seaweed · contributes to normal cognitive function · normal energy-yielding metabolism · normal nervous system function · the maintenance of normal skin · the normal production of thyroid hormones · normal thyroid function · the normal growth of children
Organic seaweed — 300mg:
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Organic Ascophyllum nodosum · also called rockweed, Norwegian kelp, knotted wrack or egg wrack · a brown alga of the northern Atlantic · Seagreens®, from the Scottish Outer Hebrides
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Organic Fucus vesiculosus · bladderwrack · found on the coasts of the North Sea, western Baltic, Atlantic and Pacific
Organic vegetables and herbs — 290mg:
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Organic spirulina · blue-green algae · contains naturally occurring sulphites
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Organic artichoke leaf · Cynara scolymus
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Organic chlorella · Chlorella vulgaris · contains naturally occurring sulphites
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Organic green tea leaf · Camellia sinensis
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Organic alfalfa · Medicago sativa
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Organic cayenne pepper · Capsicum annuum
100 capsules in an HPMC vegetarian shell. Soil Association and EU organic certified. Vegan. Vegetarian. Halal approved. Kosher approved. No artificial colourings, preservatives, additives, fillers or binders.
ALLERGY ADVICE: contains naturally occurring SULPHITES, from the spirulina and chlorella.
Every capsule is: ✓ Iodine 128% NRV from seaweed · ✓ Soil Association organic · ✓ Seagreens® Hebridean · ✓ Halal & kosher · ✓ Vegan · ⚠️ Contains sulphites
IoBio vs Other UK Iodine Options
|
IoBio
BioBodyBoost · 100 caps
|
Potassium iodide |
Generic kelp capsules |
| Iodine from whole seaweed |
✓ 192µg, 128% NRV |
✗ Isolated salt |
✓ Yes |
| Soil Association organic |
✓ Certified |
✗ No |
✗ Rarely |
| Species specified |
✓ Both named |
N/A |
✗ Often not |
| Organic vegetables & herbs |
✓ 6 |
✗ None |
✗ None |
| Halal & kosher approved |
✓ Both |
Varies |
✗ No |
Based on publicly available product information. Always verify current specs on manufacturer websites.
How to Take It
Take 1 capsule, one to three times per day, or as advised. One capsule already provides 128% of the iodine NRV, so one daily is sufficient for most people. Capsules can be opened and sprinkled onto food.
Because several products in the range contain kelp, check your total iodine intake if you take more than one — Fluid Balance, BioFem and CGA Slender all contain kelp.
Is This You?
- You're vegan or vegetarian — most dietary iodine comes from dairy and meat, so deficiency is common on plant-based diets
- You want iodine from whole organic seaweed rather than an isolated potassium iodide salt
- You want the species named and the source stated — Seagreens® Ascophyllum from the Scottish Outer Hebrides
- You need halal and kosher approved iodine — dietary iodine sources rarely are
- You do not have a thyroid condition or a sulphite sensitivity
Explore the full Halal Vitamins UK and Plant Based Vitamins & Minerals collections.
Questions We Get Asked
Why do vegans often need iodine?
Because most iodine in the average UK diet comes from dairy products and meat. Cut those out and intake drops sharply unless you eat seaweed regularly or use iodised salt, which is uncommon in the UK. Seaweed is the main plant-based food source, which is why this supplement exists.
Which seaweeds are used?
Two food-approved brown seaweeds. Ascophyllum nodosum — also called rockweed, Norwegian kelp or knotted wrack — is Seagreens®, sourced from the Scottish Outer Hebrides and the highest of their species for iodine. Fucus vesiculosus is bladderwrack. Both are certified organic.
Should I be careful about the iodine dose?
Each capsule provides 192µg, or 128% of the Nutrient Reference Value. That is a sensible daily amount, but at three capsules it becomes 576µg, which approaches the EU tolerable upper intake for adults. If you have hyperthyroidism, Hashimoto's or take thyroid medication, speak to your GP before taking any iodine supplement — and check whether other supplements you take also contain kelp.
What are the sulphites?
They occur naturally in the organic spirulina and chlorella — they are not added. The supplier declares them as allergens, so anyone with a sulphite sensitivity, which is more common among asthmatics, should avoid this product.
Food supplements should not replace a varied diet or healthy lifestyle. Contains naturally occurring sulphites. Contains iodine at 128% NRV per capsule. Consult your GP before use if pregnant, breastfeeding, taking prescription medication, or if you have a thyroid condition or are under medical supervision.
