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Best Seaweed Supplements

Seaweed used to be a staple only in Asian households, but now it has millions of fans worldwide who love its crunchy, salty snack. This marine plant has many uses in medicine and delicious recipes today. Seaweed, grows in oceans and seas. Seaweed food supplements are made by drying seaweed and putting its nutrients into capsules. Many people don't enjoy raw seaweed, so powders or capsules are a great option. Today, we’ll explore some of the best seaweed supplements in the market and cover details such as ingredients, sourcing, and safety.

Are Seaweed Supplements Safe?

Yes, seaweed supplements are safe.  They are excellent detoxifiers, digestive aids, and cleansers. The only minimal risk arises from seaweed’s richness in iodine

While we need iodine to survive, too much of it can be harmful and lead to an overactive thyroid, so that’s something to keep in mind… You don’t want to hit 5x your daily allowance of iodine.

Types of Seaweed Supplements

Seaweed is an incredibly versatile and nutritious plant that comes in many forms, each boasting its own unique benefits. Here's a look at some of the most popular types of seaweed supplements you can add to your wellness routine.


Spirulina is a blue-green algae that's recognised for its impressive protein content and antioxidant properties. It's a rich source of B-vitamins, iron, and manganese. Spirulina supplements often come in powder or tablet form and can be a great addition to smoothies or taken as a daily supplement to support energy levels and immune function.


Kelp is a type of brown seaweed loaded with iodine, which is essential for healthy thyroid function. Kelp supplements can come in powdered form, capsules or even as snacks. They can help regulate metabolism and support bone health due to their calcium content. It's important to monitor intake, however, due to the high levels of iodine.


Chlorella is a green algae similar to spirulina, but it's renowned for its ability to bind to heavy metals and support detoxification in the body. This supplement often comes in powder or tablet form and is packed with protein, iron, and vitamins A, C, and B12, making it a powerhouse for vegetarians and vegans.


Most commonly known for its use in sushi, nori is available as a dried snack and also as a supplement. It's a good source of vitamin C, vitamin A, potassium, and fibre. Nori can support cardiovascular health and help maintain a healthy cholesterol level.


Dulse is a red algae that is often consumed dried or as flakes. It's rich in potassium, iron, and Omega-3 fatty acids. Dulse can be sprinkled onto food as a seasoning to add a nutritional boost and a unique umami flavour to dishes.

Sea Moss

Sea moss, or Irish moss, has gained popularity for its mucilage content that can support digestive health. It's also packed with vitamins and minerals such as iodine, potassium, calcium, and magnesium. Sea moss gels or powders can be added to foods or taken as a supplement to support overall wellness.

Best Seaweed Supplements: The Ultimate List

three verve bottles in a line

Our Top Choice:

Verve V80 stands out as the most complete seaweed supplement on the market.. While other products lack certain features, such as transparency or a comprehensive blend of ingredients, Verve V80 excels in all areas; 100% transparency, a delicious taste, and a formula backed by science for over 200 health benefits. Verve V80 provides more than excellent value for its price.

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Seaweed is famous for improving heart health, aiding weight loss, and boosting the immune system due to minerals and vitamins  like Vitamin A, B Vitamins, Vitamin C, magnesium, iron, and calcium.

We've conducted hours of research so you don’t have to and to help you find the best seaweed supplement. 

Below, we've listed the best seaweed supplements to make your skin glow and keep your organs healthy.

  1. Verve V80
  2. Oceangreen Organics Seaweed Kelp Supplements
  3. Daily Health, Seatrition Immune Thyroid Support Pure 12 Whole Seaweed Plants
  4. Horbaach Brown Seaweed Plus
  5. NusaPure Brown Seaweed Extract 
  6. Seagate Products Freeze-Dried Seaweed
  7. Piping Rock Brown Seaweed Capsules 


Now, let’s take a closer look at each of these brands. We'll explore their seaweed sources, formulas, and ingredients.

9. Seagate Products Freeze-Dried Seaweed

Seagate's freeze-dried seaweed is a concentrated source of  iodine, fibre, minerals, protein, and chlorophyl. 

The recommended dosage is three capsules per day with meals, and one capsule provides 15% of the suggested daily value or 0.02 mg of iodine. 


  • A decent nutritional value in each serving.
  • Good amount of iron and calcium.
  • Divers gather the brand's seaweed from a bay on the central Pacific coast of Baja California.


  • It’s not suitable for people with an overactive thyroid.
  • Some customers said they could taste the seaweed, which they didn't like. 
  • The natural smell might bother you. 
  • Doesn’t even provide 100% NRV of Iodine, let alone other nutrients.

8. Piping Rock Brown Seaweed Capsules 

Piping Rock is popular worldwide for producing high-quality wellness products, including vitamins and supplements.

Piping Rock's capsules feature Fucoxanthin extract, a key ingredient found in bladderwrack, a favoured seaweed species for marine algae supplements. 

The formulation is also gluten-free and GMO-free, and it includes green tea extract for additional support and absorption.


  • A safe, powerful, and pure formula.
  • The green tea added contains 45% EGCG, 75% catechins, and 95% polyphenols, providing a high level of antioxidants.


  • It’s a bit more expensive than other options in the market.
  • Some users find the capsules too big

7. NusaPure Brown Seaweed Extract

Next on our list are NusaPure Brown Seaweed capsules.

Like the previous option, it contains bladderwrack also known as brown seaweed, and its focus is on bladderwrack rather than containing a spectrum of seaweed.

We also like the addition of black pepper extract or Bioperine, which improves the absorption rate (something we’ve also included in Verve V80). Black Pepper extract helps your body absorb nutrients, which is a common concern when it comes to supplements. 


  • 6,000 mg extract per serving ensures a potent dosage per capsule (30:1 Extract).
  • Provides numerous health benefits.
  • Excellent value: 200 vegetarian capsules last for 200 days, offering a long-term supply.
  • Modern formulation attributed to high-quality sourcing.


  • Visible health effects may take weeks.
  • Some complaints that the capsules are too large
  • Only focuses on Bladderwrack, so again lacking benefits compared to Verve V80. .

6. Horbaach Brown Seaweed Plus

Next on our list is Horbaach’s Brown Seaweed capsules.

Brown seaweed, commonly known as bladderwrack, is a salty sea algae. 

This marine algae supplement highlights the naturally sourced antioxidant Fucoxanthin. The fillers used in this include Vegetable Magnesium Stearate and rice powder, which is something to consider. 

It also doesn’t exactly include many ingredients, as you can see on the label adjacent

Not ideal if you’re looking for a supplement that includes various aspects of your health. 

  • Horbaach brand manufactures laboratory-tested and premium ingredients.
  • Green tea extract in the ingredients offers 95% Polyphenols & EGCG.
  • Many users have also lost weight after taking this bladderwrack supplement.
  • Too many filler ingredients
  • Not a wide range of ingredients, so won’t offer many benefits competitors like Verve V80 offers.

5. Seatrition, Daily Ocean Blend

Our next choice is Seatrition is another vegan and all-natural formula for conscious buyers, offering a more generous capsule count—180 in a single bottle. 

Here’s the nutritional information: 

Something we need to point out: It includes a proprietary blend, as you can see in the image above. What this means is that they don’t disclose the quantity of the individual ingredients, which isn’t ideal. 

In addition, the formula also contains whole food ingredients and vegetable iodine. Some examples include channeled wrack, maerl, kombu, Irish moss, knotted wrack, sea lettuce, dillisk, bladderwrack, laver, dulse, Chinese Nori, and rockweed.


  • Helps with weight management.
  • This formula is packed with iron, magnesium, vitamins, copper, antioxidants, soluble fiber, omega-3 fatty acids, and more nutrients.
  • The capsules are easy to absorb.


  • Users need to take one capsule after each meal, which can be inconvenient.
  • Contains proprietary blends/doesn’t disclose individual ingredients dosage.

4. Organic Kelp - Cornish Seaweed Company 

The Cornish Seaweed Company offers an organic kelp supplement that's beneficial for thyroid function, metabolism, and overall well-being. This supplement, made from sustainably hand-harvested organic kelp, is a natural source of iodine. It supports the production of thyroid hormones, energy metabolism, psychological function, nervous system health, and the maintenance of normal skin. It's vegan, non-GMO, free from chemicals, gluten, and soy. The ingredients include thongweed and oarweed, encapsulated in a vegetable cellulose capsule, highlighting the company's commitment to ethical and sustainable practices.


  • High in iodine for thyroid function and metabolism.
  • Vegan, non-GMO, free from chemicals, gluten, and soy.
  • Ethically and sustainably sourced with recyclable packaging.


  • Specific to individuals' dietary needs, not a one-size-fits-all solution.
  • Requires consistent daily intake for benefits.
  • Caution advised for those with thyroid issues.
  • 2g serving size likely does not contain most vitamins, minerals, amino acids, etc. competitors like Verve V80 offers.

3. The Pure Organic Seaweed Supplements 

The Pure Organic Seaweed Supplements from ishga UK are crafted from organic seaweed, offering a natural blend of nutrients beneficial for overall health. 

They are rich in vitamins, minerals, amino acids, and essential fatty acids, making them a comprehensive dietary supplement. The key ingredient, Hebridean Ascophyllum nodosum seaweed, is sourced for its high iodine content, supporting thyroid function, metabolism, cognitive function, and skin health.

  • Contains minerals, vitamins, amino acids, and essential fatty acids.
  • Excellent source of iodine for thyroid and metabolic health.
  • Vegan, with no artificial fillers or binding agents.
  • Promotes cognitive health, skin health, and nervous system support.


  • Limited to seaweed's nutritional profile, may require additional supplements for complete nutrition.
  • Doesn’t disclose dosages

2. Ocean & Green Seaweed 

Second on our list is Ocean & Green Seaweed, which contains 54 ingredients. 

The 54 nutrients work wonders for menopausal women and for anyone who needs iodine support. Its formula results in beautiful skin, better digestion due to high fiber content, stronger immunity, decreased stress levels, and hormone regulation.


  • The seaweed in these capsules was hand-harvested from the New Zealand oceans. This ensures pure sourcing and many health benefits.
  • One container contains 60 vegan and organic capsules.
  • It has a relatively high percentage of iodine to help people who need adrenal gland and thyroid support.
  • Includes 54 trace elements, minerals, and vitamins.


  • The capsules are not suitable for people who have a normal iodine percentage or a smoothly working thyroid.
  • Contains proprietary blends/doesn’t disclose all nutrients

1. Verve V80

verve bottle surrounded by yellow and red fruits

Let’s tackle the elephant in the room first. Did we put Verve at the top because it’s our product? 

Absolutely not! However, V80’s nutritional formula includes spirulina and kelp, both seaweed foods.

Additionally, there are 78 more ingredients. Here's a simple breakdown of Verve V80’s main ingredients:

  • 100% NRV of Essential Vitamins: Verve V80 ensures you receive the full recommended daily intake of essential vitamins, supporting everything from immune function to energy levels, all within one convenient drink.
  • Adaptogens like Ashwagandha and Panax Ginseng: Experience the stress-reducing benefits of Ashwagandha and the energizing effects of Panax Ginseng, both included in Verve V80 to help your body adapt and thrive in today's fast-paced world.
  • Fruit Extracts: Our greens drink is infused with fruit extracts, loaded with antioxidants and natural sweetness, enriching your diet with vital nutrients while pleasing your palate.
  • Greens & Superfoods like Kale, Kelp, Spirulina, Barley Grass & more: Dive into a blend of nutrient-dense greens and superfoods with Verve V80. From detoxifying kale to iodine-rich kelp and protein-packed spirulina, each serving ensures your body gets a spectrum of essential nutrients.
  • Probiotics: With Verve V80, fortify your gut health with a daily dose of probiotics that promote a balanced digestive system and enhance nutrient absorption.
  • + Much More: Beyond these key features, Verve V80 offers a comprehensive range of additional health-boosting ingredients to ensure you're well-equipped for a healthier lifestyle.
Verve product bundle with plants in the background

It's loaded with ingredients that will benefit your health.

All of these superfoods, minerals, vitamins, adaptogens, antioxidants, and probiotics join forces to deliver 200+ health benefits to you:

  • Faster metabolism.
  • Better immune system.
  • Improved vision or eye health.
  • Smoother digestion process.
  • Peaceful sleep.
  • Sharper focus.
  • Heart health support.
  • Lower stress levels.
  • Anti-inflammation.
  • Advanced antioxidants reverse the aging signs.
  • Younger skin and hair.
  • Better brain or cognitive functioning.
  • High energy levels.

Our wellness-packed powder supplement is also easier to consume compared to capsule seaweed supplements, which we'll discuss soon. People simply love Verve V80 because:

  1. Every ingredient is healthy, carefully chosen, and approved by Europe’s best nutritionists.
  2. The infusion of real fruits results in a tempting taste.
  3. Verve does not compromise on transparency—zero proprietary blends and harmful ingredients.
Get your hands on Verve Transparent Greens

Buying Guide for Best Seaweed Supplements

Each of these products has its own special features and ingredients. But how do you choose? 

We've listed some things to think about when choosing the best marine algae supplement.


The dosage of kelp supplement you should take depends on your current health condition and specific needs.

For example, if you have poor thyroid functioning or are deficient in iodine, you should consume a larger amount of iodine, but if this is the case it’s worth consulting with a health professional first. 

Purity & Quality

Look for products with 3rd party testing to ensure quality, for example Verve V80 is informed sports accredited, meaning it undergoes 3rd party testing to ensure there aren’t any performance-enhancing-drugs with nasty side effects, which one study found as many as 28% of supplements to contain. 

Another important thing to consider is how pure and safe the formulation is. 

It's common for capsules to contain other ingredients besides algae, like rice protein, cellulose, and vegetable iodine, as mentioned earlier. Check the full ingredient list to make sure nothing is harmful, and that they don’t ineract with whatever supplements you’re taking. 

Allergen Information

Check for allergen information on the product label to ensure it is safe for your dietary needs. 

Some seaweed supplements may contain common allergens like gluten, soy, or nuts, so review the ingredient list carefully.


The price of a seaweed supplement varies depending on factors like the brand, the number and type of other ingredients, the species of algae, potency, safety level, and the form of the supplement.

Keep your budget in mind, but remember that the cheapest option might compromise on safety or potency. Investing in your health is important.

Clinical Research and Evidence

Seek out products that are backed by scientific research and clinical studies to be sure about efficacy and safety. 

Look for brands that transparently share information about their dosages, so you can look at clinical research of the benefits and effects.

Taste and Palatability

Finally, nobody wants a product that tastes bad.

Some seaweed supplements may have a strong or unpleasant taste, which can affect your willingness to take them regularly. Look for supplements that offer pleasant flavors or are easily masked when mixed with other foods or beverages.

Considering these factors will help you narrow down your options to safe and reliable products, shortening your list of "seaweed supplements to consider" to just a few options.

Best Seaweed Supplements: Frequently Asked Questions

We understand you may have questions about seaweed supplements, so here are some answers to common inquiries:

Are seaweed capsules as healthy as fresh seaweed in the sea?

Marine algae capsules offer easy consumption and nearly identical nutritional value to fresh seaweed. Manufacturers typically produce capsules from dried and ground seaweed, standardizing the encapsulated algae to include specific nutrient amounts. They also provide a concentrated source of nutrients along with other healthy ingredients.

Is the wakame supplement different from other seaweed supplements?

Wakame is rich in minerals like iron and calcium, as well as a variety of vitamins. These nutrients promote healthy skin, nails, and hair. Compared to other seaweed types, wakame is particularly potent for addressing specific health concerns.

Is a kelp supplement different from a brown supplement?

Brown algae supplements, such as those made from kombu and wakame, usually contain higher levels of two compounds called fucoidan and fucoxanthin. Meanwhile, kelp supplements are richer in minerals and iodine.

Can seaweed supplements help with weight loss?

Some studies suggest that seaweed supplements might help with weight loss by making you feel full and reducing fat absorption. However, weight loss isn't their primary purpose, and researchers definitely need to conduct more studies on this topic.

Are there any bad effects of taking seaweed supplements?

Most people can take seaweed supplements without problems if they follow the instructions. 

However, some people might be sensitive to iodine or have allergies. Also, some supplements might have high doses of iodine, in which case they should be careful. 

bottle filled with fruit

The Ultimate Choice: What is The Best Seaweed Supplement?

While our list discussed many reliable algae supplements, Verve V80 still steals the spotlight due to 100% transparency, 80 robust and professionally approved ingredients, naturally delicious taste, and affordability.

It’s also super easy to consume. The powder is very mixable and you can add it to smoothies or any other drink.

Enjoy over 200 health benefits, such as:
Enhance gut health.
Essential vitamins for defense.
Vitamins for optimal eye health.
Vitamins for skin and hair.
Relaxation for restful sleep.
Nutrients for mental clarity.
Fight off free radicals.
Reduce inflammation.
Increase natural energy.
Support cardiovascular health.
Enhance mental clarity and memory.

Get started with Verve and feel the difference yourself.

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V80 Transparent Greens Powder
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