Rated 4.9 out of 5
Based on 49 reviews

SEAFIBRE-FUCOIDAN Super Marine Seaweed Duo

Double seaweed blend for gut & immune health.

$59.00
$59.00
Tax included. Shipping calculated at checkout.
Packaging Type

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

Ingredients

How to use

Trusted by 20,000+ Australians. Backed by 10+ years of research.
Science-Backed

Every formula is developed by marine scientists with over a decade of research.

Sustainable Sourcing

Locally harvested seaweed from pristine Australian waters.

Visible Results

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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average rating 4.9 out of 5
Based on 49 reviews
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49 Reviews
Reviewed by Lorelei T.
Verified Buyer
I recommend this product
Age Range
55 - 64
My specific Health Issues
  • leaky gut
  • Gut Health
  • joint pain
  • iron deficiency
Rated 4 out of 5
Review posted

Lorelei Tuohy

I knew from past experience with my gut, (history of Hashimotos thyroid itis ) MCAS , histamine, mold sensitivity , leaky gut etc etc .. that I should introduce the tablets slowly...I started with one a day and i was taking one a day for about 5 days and then increased the dose to only 2 a day.... my bowel did slow down for about 5 days..stool colour was lighter ? at the beginning, I went off my food and felt sluggish and felt "not hungry" but after the first week, i am feeling so much better, my bloating in my gut has reduced by 60-70% . I feel like i have much more energy (even though i have still my compounded thyroid meds) I feel more alert....I am happy to stay on the 2 a day versus the recommended 4 per day. I may increase it to see my reaction....As a teenager and young adult my naturopaths and functional medicine doctors prescribed "Kelp" tablets daily... The PhycoHealth supplements feel a lot "nicer/softer" ...thats my gut talking??:) and I am taking same dose of the seafibre3 same protocol...

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PhycoHealth

Thanks so much for your in depth review Lorelei... helps us, so much, to know how you have taken on and adjusted your gut to a new space. It is indeed an ecosystem change, and therefore it will take some adjusting. But that is the point. :)
Many others will benefit know of your experience.
Best in continued health within, Lorelai.
Pia

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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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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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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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,

As Seen In

Trusted by major platforms who believe in marine-based health.

The Power of Seaweed

Discover how seaweed is helping build a more sustainable planet.

Read the full article
Seaweed & Skin Regeneration

From 3D printing to wound healing — our research is breaking boundaries.

Read the Forbes feature
A Founder’s Story

How one marine scientist turned survival into a mission to heal the planet.

Listen to the full interview
Seaweed & Climate Change

A deep dive into the environmental magic of seaweed.

Listen to the podcast

Frequently Asked Questions

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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