Looking for the best seaweed supplements the UK has to offer? Look no further than Detox Trading.
We stock a wide range of organic seaweed supplements in an array of forms. From raw organic sea moss to kelp powder, these wonders from the sea are incredibly nutrient-dense and can support your health and wellbeing in a host of ways.
Explore our full range of organic seaweed supplements and let these marine plants work their magic.
-
Irish Moss Seaweed
From £12.55 Read more This product has multiple variants. The options may be chosen on the product page -
Sugar Kelp – Organic, Chopped Leaf
From £7.85 Read more This product has multiple variants. The options may be chosen on the product page -
Kombu Kelp Seaweed – Organic
From £7.60 Read more This product has multiple variants. The options may be chosen on the product page -
Dulse Seaweed – Organic – Chopped Leaf
From £13.00 Read more This product has multiple variants. The options may be chosen on the product page -
Alkalising Seaweed Blend
From £15.70 Read more This product has multiple variants. The options may be chosen on the product page -
Wakame Seaweed – Organic
From £8.35 Read more This product has multiple variants. The options may be chosen on the product page -
Ocean Salad, Four Seaweed Blend – Organic
From £13.25 Read more This product has multiple variants. The options may be chosen on the product page -
Bladderwrack Seaweed – Organic, Finely Chopped
From £9.20 Read more This product has multiple variants. The options may be chosen on the product page -
Sea Spaghetti Seaweed – Organic
From £6.00 Read more This product has multiple variants. The options may be chosen on the product page -
Kelp Powder – Organic
From £9.25 Read more This product has multiple variants. The options may be chosen on the product page
What are the benefits of seaweed supplements?
Seaweeds are among the most nutrient-dense foods on the planet. They are a natural source of iodine, a mineral that supports normal thyroid function and is difficult to obtain in meaningful amounts from most land-based foods. Depending on the variety, seaweeds also contain fucoidan, alginates, vitamins A, B12, C, E and K, as well as minerals including magnesium, calcium, iron, zinc and potassium.
Adding our organic seaweed supplements to your daily intake can support heart health and thyroid function, boost gut health, and help you manage your blood sugar levels.
The best seaweed supplements in the UK
Whether you’re looking for edible seaweed flakes to sprinkle in your cooking or powder to stir into smoothies, our range of seaweed supplements offers a variety of options. Here are some of the most popular seaweed supplements that can deliver a big boost of nutrients:
Irish Sea Moss
Harvested in Donegal, our sun-dried Irish Sea Moss is full of vitamins and minerals, including potassium, manganese, phosphorus, bromine, calcium and zinc. It has a mild flavour and acts as a natural thickener, ideal for adding to soups and stews. This product can also be used to make Sea Moss gel, a popular and convenient way to enjoy this nutrient-rich supplement.
Kelp Powder
Containing iodine, calcium, iron, potassium, B vitamins, and polysaccharides, our vibrant green Kelp Powder can be added to juices, smoothies, and a variety of dishes. You can also add it to capsules using our capsule machine for quick and easy consumption.
Wakame
As well as being a delicious, popular ingredient in Asian cuisine, wakame seaweed is rich in calcium, iodine, fatty acids and a whole host of vitamins. Our organic Wakame is hand-harvested in Scotland and can be enjoyed dry or rehydrated. It’s an excellent addition to salads, stews, miso soup, and more, and can support hormonal health and contribute to healthy skin and hair.
Organic Kombu Kelp
If you want to add a naturally savoury and slightly sweet flavour to your cooking while boosting your intake of essential minerals like iodine, magnesium, potassium, and calcium, our organic Kombu Kelp from Ireland is the seaweed supplement for you.
Baked, steamed, or sprinkled, it’s perfect for wrapping sushi, seasoning soups, stews, sauces, and vegetable dishes. Its natural glutamic acid deepens the flavour of your food, while its dietary fibre and unique texture help soften grains and reduce cooking times.
Slightly sweet from its natural sugars, Kombu Kelp is a versatile, nutrient-packed addition to any kitchen and diet for overall wellbeing.
Please note: Before trying any new health and wellness supplements, including our seaweed products, consult with your medical practitioner, especially if you are pregnant, breastfeeding, or concerned about medication contraindications.
Shop organic seaweed supplements with Detox Trading
If you’re ready to see the wellness benefits of our marine marvel for yourself, add our seaweed supplements to your basket.
At Detox Trading, you can also find a wealth of immune system boosters, gut health supplements, the best joint health supplements, and more. So have a browse and boost your everyday wellbeing.
Our family-run team can’t offer advice on health, dietary, or medical conditions, but we’re always happy to have a chat about recommendations and check out any other queries you may have, so please don’t hesitate to get in touch.
We also have a full FAQ page to help answer any other questions.
FAQs
How do I use organic seaweed supplements?
The dried whole leaf varieties can be soaked and added to soups, stews, salads and broths. Sea spaghetti works well as a pasta substitute or side dish. Kombu and wakame rehydrate quickly and add depth to Asian-style cooking.
For supplement use, the powdered and blended formats, including the Alkalising Seaweed Blend and kelp powder, are the most practical. A small daily amount added to a smoothie or juice is how many Detox Trading customers use them.
Iodine content varies significantly between seaweed varieties. Sugar Kelp, for example, contains the highest concentration of iodine and should be used in small amounts. Bladderwrack and wakame are also high. Dulse is more moderate. If you are new to seaweed supplements, starting with a lower iodine variety or using small amounts in a sensible approach.
Which seaweed is edible?
Many seaweed varieties are edible, but it’s important to make sure you purchase the right types from a reputable supplier. At Detox Trading, you’ll find a collection of edible seaweeds, including dulse, kelp, kombu, wakame, sea spaghetti, and Irish sea moss.
Our Organic Ocean Salad blend also contains sea lettuce (Atlantic spirulina) and dulse, which are another two lovely edible seaweed options.
Does seaweed have B12?
Certain seaweed supplements are a brilliant source of vitamin B12. While the exact levels depend on where the seaweed was harvested, nori, wakame, and kombu are particularly rich in B12.
What organ is seaweed good for?
Many people consider seaweed to be a superfood because it is so nutrient-dense. Its high levels of iodine, antioxidants and fibre make it a popular supplement for supporting the thyroid gland, heart and digestive system. However, it’s important to note that the high concentration of iodine means seaweed must be consumed carefully, as overuse may lead to hyperthyroidism.
Does seaweed interact with any medications?
Seaweed supplements tend to be high in iodine, vitamin K, and potassium. These high levels mean that seaweed can potentially interact with some medications, including blood thinners, thyroid medication, and blood pressure medications.
If you are thinking about incorporating organic seaweed supplements into your wellness routine, always double-check any possible contraindications with your doctor or medical practitioner.
What are the best seaweed supplements in the UK?
The best seaweed supplement depends on what you are looking for. For iodine specifically, bladderwrack and kelp are among the richest natural sources available. For broad mineral content, Irish moss is widely regarded as one of the most nutritionally complete seaweeds. For those following a plant-based diet, nori is one of the few reliable food sources of vitamin B12. Detox Trading stocks all of these in certified organic form, carrying Soil Association certification and full safety testing documentation.
If you are thinking about incorporating organic seaweed supplements into your wellness routine, always double-check any possible contraindications with your doctor or medical practitioner.










