A super marine duo from seaweeds. SeaFibre-FUCOIDAN™ is our propriety seaweed extract from our green seaweed, SeaFibre™, blended carefully with fucoidan extract from brown seaweeds. Fucoidan, like Seafibre, has also been clincially tested and is known to support gut and anti-inflammatory processes in the body and is widely used by the Japanese. With SeaFibre-FUCOIDAN, you can live the life of a person on a traditionally seaweed-rich diet, broadening the support of your gut immune systems generally and while in recovery.
Read more about how to mix and match our supplements to tailor to your personal health needs.
90 g
Product Information
Taking SeaFibre™ is an easy way to increase and diversify your fibre intake to help you promote a healthy, happy gut, as shown in the research from our clinical studies and as featured in the Clever Guts Diet by Dr. Michael Mosley.
Not only that, our recently published research on clinical studies showed that there are also improvements to chronic inflammation systems in people taking SeaFibre. This is similar and complementary to the traditional Japanese Fucoidan fibre from brown seaweeds, and therefore SeaFibre-Fucoidan offers you a double upgrade of your "sulfated glycan" intake. These highly charged molecules from the sea used to be a part of traditional human diets, and are important in the gut microbiome processes and profile.
Taking SeaFibre-fucoidan alone, or in a pattern with SeaFibre-3 or SeaFibre-CAL, helps you cover all bases of better health for the long term. Just take 2-6 capsules per day, whenever you feel that the diversity of your diet from seaweeds is lacking.
Ingredients
Each jar contains 90g of capsules, each with 0.55g soluble, sulphated-glycan fibre as well as Magnesium and Boron from Sea lettuce (Ulva sp. 84) and Mekabu (Undaria pinnatifida) fucoidan extract.
How to use
Take 2.2g in 4 capsules daily, with food and plenty of water. If you are sensitive to a sudden increase in fibre intake then it can be useful to start with 2 capsules daily and after a week or two, increase to 4 capsules daily.
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Science-Backed
Every formula is developed by marine scientists with over a decade of research.
Sustainable Sourcing
Locally harvested seaweed from pristine Australian waters.
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Feel real benefits in digestion, inflammation, and vitality.
Unique Bioactives
Not just any seaweed — ours is rich in exclusive marine compounds.
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Pair this with your SEAFIBRE-FUCOIDAN Super Marine Seaweed Duo. These bundles and products are trusted by thousands to take results to the next level.
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48 Reviews
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My specific Health Issues
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Kristine L.Reviewed by Kristine L.
Verified Buyer
I recommend this product
Age Range
45 - 54
My specific Health Issues
Gut Health
leaky gut
Rated 5 out of 5
Review posted
Feeling the benefits
Seafibre-Fucoidan is my new favourite supplement for digestion. This supplement settles my IBS symptoms, reduces reflux, bloating and digestive discomfort (along with healthy diet choices). I am reassured that Fucoidan is backed by research to support the microbiome and gut lining. This is now part of my longterm health regimen. Thanks to Pia and the team.
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Danny O.Reviewed by Danny O.
Verified Buyer
I recommend this product
Age Range
65+
My specific Health Issues
Gut Health
joint pain
Rated 5 out of 5
Review posted
Seafibre Caps
Easy to swallow, no after taste hoping for gut improvement over time!
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Maria C. R.Reviewed by Maria C. R.
Verified Buyer
I recommend this product
Age Range
55 - 64
My specific Health Issues
Gut Health
joint pain
Rated 5 out of 5
Review posted
A must have
My body loves the Seafibre. My tummy is happy and regular. Real benefits, I am certain inflammation is down and I feel lighter and more energetic.
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Melissa D.Reviewed by Melissa D.
Verified Buyer
I recommend this product
Age Range
45 - 54
My specific Health Issues
Gut Health
Rated 5 out of 5
Review posted
Incredible
Natural and no smell a great addition to a healthy diet .. I am a convert
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PhycoHealth
Hi Melissa, Thank you so much for your kind words! We are thrilled to hear you're enjoying the product and that it's been a seamless, natural addition to your healthy routine. Welcome to the SeaFibre community — we are so glad to have you as a convert! Best Wishes, Ruth,
DH
Di H.Reviewed by Di H.
Verified Buyer
I recommend this product
Age Range
65+
My specific Health Issues
Gut Health
hi cholesterol
joint pain
Rated 5 out of 5
Review posted
Tummy sorted.
I’ve tried Seafibre-Fucoidan & it’s really helped sort out my tummy. I feel much better physically & so happy to be using a sea product with all the benefits of the fibre & the nutrients we all need.
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PhycoHealth
Thank you so much for your amazing feedback, Di! We are thrilled to hear that SeaFibre-Fucoidan has helped sort your tummy and made you feel better overall. It’s wonderful to know the power of seaweed is making a real difference for you! Regards, Ruth.
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The Power of Seaweed
Discover how seaweed is helping build a more sustainable planet.
Straight answers to what everyone wants to know before trying seaweed-based health products.
What does seaweed actually do for the body?
Seaweed is a natural powerhouse of prebiotics, antioxidants, and minerals. It supports gut health, improves skin clarity, boosts immunity, and helps your body function at its best — all from one ingredient.
Are your products safe to use long-term?
Yes. All our products are made from food-grade, sustainably harvested seaweed and formulated to be safe for daily, long-term use.
Can I use this with other supplements or medications?
Generally, yes — our formulas are designed to complement most wellness routines. But if you’re on specific medications, we recommend checking with your healthcare provider.
Where is your seaweed sourced from?
Our seaweed is grown and harvested right here in Australia, using sustainable aquaculture practices. It’s 100% traceable, clean, and nutrient-rich.
What makes PhycoHealth different from other gut or skin brands?
We’re science-first. Our founder is a marine scientist, and we back every product with real research. No hype, no filler ingredients — just results that work.
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