Fucoidan – the ocean's best-kept secret, until now.
Fucoidan is a bioactive compound found in brown seaweed. Naturally rich in only a handful of species – wild-sourced from cold, remote waters – it's as rare as it is remarkable.
Over 4,000 studies have explored its role in immune resilience, gut balance, and overall wellbeing. It's even thought to be one of the forces behind the Okinawans' famously long, vital lives. We're bringing it out of the science journals and into your daily ritual.
- Immune resilience
- Gut balance
- Skin health
- Energy & vitality
- Anti-inflammatory
- Antioxidant
If this sounds familiar, you're in the right place.
Always catching something
Every office cold, daycare bug or seasonal sniffle finds its way to you, and you're often still run-down after everyone else has bounced back. You wish your body's natural defences were more resilient.
Skin that won't settle
Adult acne, redness, a complexion that's lost its glow. You've worked through topical products, yet calm, clear skin keeps slipping just out of reach. You feel your skin needs support from deeper than the surface.
Running on empty
You get through the day but you don't feel vital anymore. You can remember feeling that energised spark, and you'd like that version of yourself back.
Feeling a bit off
You're feeling inflamed, foggy, a little out of step with yourself. You have a general sense that your body needs more foundational support.
Bloating & digestive discomfort
Your digestion feels sensitive, and uncomfortable. Meals you've always loved seem to settle differently now.
Your gut runs your week
Your gut keeps you guessing. You're tired of planning your days around food, stress and symptoms you can't predict (always taking a mental note of where the bathroom is).
Find your SeaQuo.
Daily immune resilience, glowy skin, digestive support and whole-body vitality.
SeaQuo® Immune
- Certified organic Undaria pinnatifida seaweed, naturally rich in fucoidan
- With key supportive nutrients – vitamin C and zinc
- Whole-body support for immune function, skin, digestive health and antioxidant protection
- Wild-harvested from pristine waters off Tasmania's east coast
- Take 2 capsules daily
A foundational gut reset. Repair the gut lining, relieve bloating, discomfort and irregularity.
SeaQuo® Gut Repair
- High-strength certified organic fucoidan for targeted gut support
- 6 clinically researched ingredients, including PHGG, zinc carnosine and ginger root
- Supports gut barrier integrity, bowel regularity and digestive comfort
- Naturopath-developed 8-week program
- Mix with water, juice or a smoothie – enjoy the mild pineapple citrus flavour
Skin that feels reactive, dull or out of balance, with targeted support for the gut-immune-skin connection.
SeaQuo® Skin + Gut
- Includes Immune capsules + Gut Repair powder together in one daily ritual
- Antioxidant and anti-inflammatory ingredients to assist skin concerns
- Helps maintain digestive comfort, bowel regularity and gut barrier integrity
- Vitamin C and zinc support collagen formation, skin health and immune function
- Take 2 scoops of Gut Repair powder and 2 Immune capsules daily
Tested, trusted and recommended.
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Backed by Science
SeaQuo® delivers Australian-made health supplements that support your immune system, gut and skin health. SeaQuo® formulations are backed by a growing body of evidence on fucoidan and complemented by premium, evidence-based ingredients.
With decades of research & development, fucoidan is emerging as one of nature’s most promising ingredients for human health.
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One of Nature's Most Powerful Ingredients
SeaQuo® is powered by organic Undaria pinnatifida brown seaweed. Our pure Undaria seaweed contains fucoidan, a natural bioactive compound.
Our unique Undaria seaweed is wild grown and hand-harvested from pristine, clean oceans. It is processed organically, preserving the potency of its naturally occurring compounds.
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Whole-Body Vitality
SeaQuo® offers a solution for lasting wellness. SeaQuo® combines the strength of nature with scientific research to deliver supplements that provide genuine, multifunctional health benefits.
Our seaweed's bioactive properties are far-reaching to many different systems in the body, making fucoidan-rich supplements ideal for supporting overall health and wellbeing.
The evidence speaks for itself.
01 · ANTI-INFLAMMATORY
Many modern health concerns (such as persistent fatigue, brain fog, and skin and digestive issues) trace back to low-grade inflammation. Fucoidan helps downregulate the body’s pro-inflammatory pathways, helping to soothe gut irritation and calm inflammation throughout the body.
In a 12-week randomised controlled trial, participants taking fucoidan showed lower levels of three key markers of systemic inflammation.
Source: Liu et al., Int J Biol Macromol, 2024. PMID 39645105
02 · MICROBIOME BALANCE
A balanced gut microbiome shapes how you digest, absorb and feel each day. Fucoidan works in a prebiotic-like way: early research, including animal studies, suggests it may nourish beneficial bacteria and tip the balance towards a healthier microbiome.
Emerging research suggests fucoidan may selectively support beneficial gut bacteria, contributing to a balanced microbiome and improved gut function.
Source: Elwakil et al., EXCLI J, 2023. PMID 37534219
Research suggests fucoidan may enhance gut microbiota composition and support healthy digestive function.
Source: Yang & Lim, Mar Drugs, 2021. PMID 34436275
In mice, fucoidan from Undaria pinnatifida seaweed increased beneficial bacteria, including Bacteroides/Prevotella, Akkermansia muciniphila and Lactobacillus, and notably reduced the Firmicutes/Bacteroidetes ratio, indicating improved gut microbiome health.
Source: Yang et al., Mar Drugs, 2024. PMID 39590765
03 · IMMUNE RESILIENCE
A relentless week at work. Poor sleep. Ongoing stress. Your immune system feels it first.
Fucoidan interacts with immune cells to support balance and help the body respond to everyday immune challenges.
A pilot study in athletes found that fucoidan helped restore mucosal immune function and antimicrobial peptide levels after intense training. This suggests fucoidan may help keep the immune system resilient during times of stress or fatigue, especially important when your body is worn down from training, illness, or everyday life.
Source: Cox et al., Mar Drugs, 2020. PMID 32759709
Fucoidan interacts with gut-associated immune cells, enhancing immune balance and helping the body respond to gut-related immune challenges.
Source: Yang & Lim, Mar Drugs, 2021. PMID 34436275
04 · ANTIOXIDANT DEFENCE
Each day, your cells meet free radicals as part of life in motion. Sunlight, pollution and environmental stressors can add to this load, placing more demand on your antioxidant defences.
Fucoidan shows promising antioxidant activity, helping to neutralise the free radicals that wear the body down.
Reviews of recent studies document fucoidan’s antioxidant activity and the factors that mediate its therapeutic effects.
Source: Wang et al., Mar Drugs, 2019. PMID 30897733
Fucoidan from Undaria pinnatifida seaweed demonstrated antioxidant efficacy in vitro and in vivo.
Source: Phull et al., Int J Biol Macromol, 2017. PMID 28104371
05 · SKIN PROTECTION
Dull, congested or reactive skin can reflect what is happening beneath the surface.
By supporting the gut environment and calmer inflammatory responses, fucoidan works with the skin from within. In laboratory (cell) studies, it has also been shown to support the skin’s collagen maintenance and help defend against UV-related breakdown.
In human skin-cell studies, fucoidan increased type I procollagen synthesis and inhibited UVB-induced MMP-1, the enzyme that breaks down collagen.
Source: Moon et al., Eur J Dermatol, 2009. PMID 19129083
A review of seaweed bioactives highlights fucoidan’s anti-photoaging and potential skin health benefits.
Source: Pangestuti et al., Mar Drugs, 2021. PMID 33809936
Our Story
Hi, we're Sara & Olivia, the mother-daughter duo behind SeaQuo.
The SeaQuo story began decades ago in Tasmania, with a family discovery of fucoidan’s extraordinary potential. This remarkable seaweed compound, found right on our doorstep, ignited a passion for sharing its benefits with the world.
High-quality fucoidan requires pure waters, careful harvesting and specialised organic processing methods, making it far less accessible than many other wellness ingredients.
SeaQuo was born with a simple mission: to make the benefits of fucoidan accessible to more people. Using organic seaweed, wild-sourced from pristine waters and naturally rich in fucoidan, SeaQuo brings this powerful marine ingredient into an easy daily ritual.