SPIRULINA for Horses | Natural Superfood & Whole-Body Support 🍂NOVEMBER SALE - 20%-OFF
When people search for Spirulina for horses, they're usually looking for a natural superfood to support overall health.
But Spirulina offers so much more! Alongside its remarkable nutritional profile, it also acts as a natural mycotoxin binder within the digestive tract, helping intercept unwanted toxins before they're absorbed, while providing valuable support for the gut microbiome, immune system, metabolism, respiratory health, muscle recovery, and everyday vitality.
" High grade. I am impressed." Sophia S.
Whether your horse needs nutritional reinforcement during recovery or simply a daily boost from one of nature's most complete foods, Spirulina is one of those rare ingredients that quietly benefits almost every horse.
*Please note this is a nutritional, functional food supplement and not veterinary medicine. For more on this, see Dr Kellon's Horse Sense - Nutrition is not 'Alternative' Therapy
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Find organic Spirulina in the EquiNatural range
Here's where you'll also find Spirulina across our equine supplement support:
- LeakyGutCOMBO , KPUCOMBO , & PollenCOMBO
Overview - why Spirulina is more than just a superfood
Spirulina isn't actually a herb. It's a microscopic blue-green algae that evolved billions of years ago and remains one of the most nutrient-dense foods ever discovered. Long before horses, humans, or even trees existed, these remarkable organisms were already helping shape life on Earth.
Billions of years later, they're valued for exactly the same reason.
Spirulina concentrates an extraordinary amount of nutrition into an incredibly small space. Rich in highly digestible protein, chlorophyll, essential fatty acids, antioxidants, vitamins, minerals, and unique pigments such as phycocyanin, it provides the raw materials every cell depends upon to function normally.
That's why Spirulina appears in so many different areas of health, because healthy cells underpin healthy muscles, immunity, metabolism, tissue repair, energy production.
Rather than targeting one body system, Spirulina simply helps nourish the body from the ground up.
But there's another reason we value it so highly at EquiNatural.
Unlike many nutritional superfoods, Spirulina also has a remarkable ability to bind naturally occurring mycotoxins within the digestive tract before they can be absorbed. That makes it particularly useful during forage changes, when feeding haylage, following digestive disturbance, or whenever we want to provide a little extra support for the hindgut.
It's one of the reasons you'll find Spirulina throughout our Gut System range.
- In LeakyGutCOMBO and KPUCOMBO, it helps support the intestinal environment while binding unwanted microbial toxins.
- In PollenCOMBO, it contributes valuable antioxidant and immune-supportive nutrients during the allergy season.
In short? Spirulina supports almost every system in the body because every system ultimately depends on healthy, well-nourished cells.
How Spirulina fits into your horse's support plan
Spirulina is a good fit when you're looking to nourish your horse at the most fundamental level – the body's cells.
✔ You'd like to add one of nature's most nutrient-dense wholefoods to the daily diet
✔ Your horse is recovering from illness, injury, or a demanding period of work
✔ You'd like to support healthy immunity, muscle recovery, or overall vitality
✔ Haylage, forage quality, or digestive health has you thinking about mycotoxins
✔ You simply want to strengthen your horse's nutritional foundations rather than target one specific problem
In short: if you're looking for a versatile nutritional superfood that quietly supports almost every system in the body, Spirulina is one of the simplest places to start.
From there, support can be adapted depending on what you're seeing.
Supporting specific systems
- LeakyGutCOMBO – where Spirulina combines with SiboCARE and GutAminos to help support hindgut stability, intestinal health, and bind unwanted microbial toxins.
- KPUCOMBO – where additional nutritional support is needed alongside the gut–liver–nutrient pathways involved in more complex, multi-system patterns.
- PollenCOMBO – where Spirulina contributes valuable antioxidant and nutritional support during periods of seasonal respiratory or pollen challenge.
Foundation support
Spirulina complements the foundations of a balanced diet. Good-quality forage and a forage-based mineral blend such as VitaComplete or EquiVita provide the wider nutritional framework, while Spirulina adds an exceptionally rich source of natural proteins, pigments, minerals, and phytonutrients.
*If you're not already feeding a mineral balancer, try one of our 1kg trial bags.
In summary
Use Spirulina as an everyday nutritional foundation that supports the whole horse. Then layer more targeted blends around it depending on whether your focus is gut health, immunity, respiratory wellbeing, recovery, or longer-term metabolic resilience.
Feed guide
🌿Organic spirulina
Grown, harvested and dried without the use of agri-chemicals, non-irradiated and GMO free - see our Quality page for Quality Management & Certification Documents.
- Arthrospira platensis (Spirulina), Powder
- Organic Cultivated
- Origin China
- Feed Guide - 5g/100kg bodyweight per day, i.e. 25g for a 500kg horse.
- 1 x level 15ml scoop = 10g
Functional nutritional value
Spirulina is a complete protein source with an amino acid profile tailored for equine health, containing:
- Protein (50-70%) : Bioavailable and easy to digest, with all essential amino acids.
- Omega-3 & Omega-6 Fatty Acids : Linolenic acid (0.8g/100g) and GLA (1.2g/100g) for anti-inflammatory and metabolic support.
- Vitamins : B-complex (B1, B2, B3, B7, B5), Vitamin A, Vitamin C, Vitamin E, and Vitamin K.
- Minerals : Calcium, Iron, Magnesium, Potassium, Zinc, Selenium, and Copper.
- Phytonutrients : Chlorophyll, beta-carotene, lutein, zeaxanthin, and phycocyanin.
Footnotes
- Laboratory tested for identification and compliance to the British and European Pharmacopoeia standards.
- Human grade.
- Please be aware that if you're purchasing our dried botanicals for human use, our dried range is cut to appropriate sizes for feeding to horses.
- ♻️ Eco Note: Our packaging is recyclable and refillable.
- 🧊 Storage Tip: Keep cool and dry.
Energetics - how Spirulina works
Spirulina provides many of the raw materials that biology depends upon every day, with its nutritional profile naturally falling into four complementary roles:
- Cellular nutrition
– Highly digestible protein, essential amino acids, vitamins and minerals
- Providing the building blocks that support healthy muscles, tissues, metabolism, and everyday cellular function. - Antioxidant protection
– Phycocyanin, chlorophyll, carotenoids and other phytonutrients
- Helping protect cells from normal oxidative stress while supporting healthy energy production and metabolic resilience. - Gut ecology support
– Natural mycotoxin-binding compounds
- Helping bind unwanted mycotoxins within the digestive tract while supporting a healthier (less acidic) intestinal environment during periods of forage or digestive challenge. - Immune and recovery support
– Broad-spectrum nutritional reinforcement
- Providing nutritional support for the body's natural immune function, tissue renewal, and recovery when demands increase.
Big picture
Spirulina supports almost all of the body's systems. Not because it has a different job for every organ, but because every organ depends upon healthy, well-nourished cells.
Clinical considerations
Spirulina is generally considered a highly safe, nutrient-dense superfood when sourced responsibly and used within the recommended feed rate. However, a few caveats apply:
- Protein sensitivity – Due to its high protein content (up to 65%), spirulina may not be suitable for horses with compromised kidney function. Always consult with your vet if in doubt.
- Autoimmune conditions – Spirulina’s potent immune-modulating effects are usually a plus, but in rare cases, excessive intake may overstimulate the immune system in individuals with existing autoimmune conditions.
- Contamination risk – Not all spirulina is created equal. Poorly sourced spirulina (especially wild-harvested from uncontrolled lakes) can contain heavy metals or microcystins, which are toxic. We only use Organic Certified cultivated spirulina from trusted sources, which have to follow stringent quality control standards.
Spirulina FAQs
How do I know if Spirulina is worth adding to my horse's feed?
We'd think about Spirulina when you want broad nutritional support rather than one very specific job.
It provides highly digestible protein, essential amino acids, antioxidant pigments, vitamins, minerals and fatty acids – useful during recovery, harder work, seasonal challenges or simply where you'd like to give the everyday diet a little more nutritional reinforcement.
It's one of those rare ingredients that doesn't need Fred to have a particular problem before it earns its place.
Think nourishment rather than treatment.
Is Spirulina really a “superfood” – or is that just marketing?
“Superfood” isn't a scientific category, so we wouldn't get too carried away with the cape!
But Spirulina genuinely is an unusually nutrient-dense wholefood. It contains a high proportion of digestible protein alongside essential amino acids, pigments such as phycocyanin and chlorophyll, carotenoids, fatty acids, vitamins and minerals.
So we'd rather call it a very small organism carrying an impressive amount of nutrition.
Less catchy, perhaps, but more useful.
Can Spirulina really bind mycotoxins?
Spirulina has attracted interest for its ability to bind certain unwanted compounds within the digestive tract, which is one reason we particularly value it around forage and gut support.
But we wouldn't treat it as a magic shield against mouldy or contaminated forage.
If hay or haylage is visibly mouldy, smells wrong or you're concerned about its quality, the answer isn't to add Spirulina and carry on feeding it. Good forage management comes first.
Spirulina is support for the horse – not permission for the haynet to misbehave.
What's the difference between Spirulina and EssentialAminos?
Both can contribute useful protein nutrition, but they're quite different products.
- Spirulina is a nutrient-dense wholefood bringing protein alongside pigments, antioxidants, fatty acids, vitamins, minerals and other naturally occurring compounds.
- EssentialAminos is much more targeted – providing the nine essential amino acids specifically where muscle, topline and protein quality are the priority.
So if you're looking for broad whole-horse nutritional reinforcement, think Spirulina. If the particular question is “Does this horse need better amino-acid building blocks?”, EssentialAminos might be a better fit.
Do I need Spirulina if I'm already feeding EquiVita or VitaComplete?
You don't need to add Spirulina simply because you're feeding a mineral balancer – they do different jobs.
- EquiVita and VitaComplete provide the balanced mineral foundation designed to complement your horse's forage.
- Spirulina adds a nutrient-dense wholefood containing protein, amino acids and a wide range of naturally occurring pigments and phytonutrients.
So Spirulina can sit beautifully alongside a mineral balancer where there's a reason for it.
But no supplement tower required. If your horse is thriving beautifully on the basics, we're perfectly happy with beautifully boring.
Can Spirulina be fed every day?
Yes – Spirulina can be used as everyday nutritional support and doesn't need to be reserved for a particular season or short course.
You might feed it during recovery, increased workload, seasonal challenges or for longer-term nutritional reinforcement. As always, though, periodically ask whether it's still earning its scoop in the feed bowl.
And because quality matters enormously with Spirulina, our spirulina is a responsibly cultivated, properly tested organic source rather than an uncontrolled wild-harvested product.
Tiny blue-green organism, yes. Mystery green powder from goodness-knows-where, no.






