Chlorella, spirulina and alfalfa:
detoxification, immune support and cell regeneration in dogs, cats and humans
A dog that lives in an urban environment. A cat that eats fish with possible mercury load. An older animal that is deteriorating on several fronts at the same time. Chlorella, spirulina and alfalfa each work on a different level and complement each other exactly. This is the scientific background.
By Stefan Veenstra DVM
Why algae and alfalfa as a supplement?
Dogs and cats live in the same environment as humans: cities with air pollution, soils with heavy metals, food that partly consists of farmed animals with possible residues (you can read more about our blog about so-called Exposomes here). The body has mechanisms to process toxins, but these are overloaded with chronic exposure or disease. At the same time, most commercial feeds do not contain the full breadth of micronutrients that an animal needs for optimal cellular function.
Chlorella, spirulina and alfalfa are all exceptionally nutrient-rich and each have a specific action profile that complements what is lacking in modern feed. They are not a substitute for good food, but they supplement specific deficiencies and support physiological processes that are essential for detoxification, immunity and cell maintenance.
1. Chlorella: detoxification and cell regeneration
Heavy metals bind in the intestine
Chlorella vulgaris has a cell wall with unique binding properties for heavy metals. The broken cell wall chlorella used in supplements contains structures that bind lead, mercury, cadmium, and other heavy metals in the gastrointestinal tract. This binding process takes place in the intestine: chlorella prevents toxins from being absorbed into the bloodstream through the intestinal wall, and at the same time increases the excretion of already metabolized metals through the bile and faeces.
This is the mechanism that distinguishes chlorella from all other detox supplements: it works in the gut, not in the blood. That makes it safe for daily use without the risk of systemic chelation that can strain organs. Chlorella removes the toxins before they cause damage, or speeds up excretion through the normal drainage routes.
Clinical study · PMC 2019 · Chlorella and heavy metals
Ninety days of supplementation with Chlorella vulgaris extract led to significant reductions in lead, mercury and arsenic levels in patients with dental implants and amalgam fillings. The study confirmed the mechanism via gut-bound chelation and activation of hepatic detoxification enzymes (phase I and II). Chlorophyll content was a key factor in its effectiveness.
Chlorella Growth Factor: cell regeneration
Chlorella Growth Factor (CGF) is a complex of nucleic acids, amino acids, peptides, and polysaccharides present in the nucleus of chlorella. CGF stimulates cell growth and DNA repair in damaged cells. In aging animals, in recovery after illness or in animals with chronic oxidative stress, CGF supports the cellular repair processes that normally decline with age. CGF is also a stimulus for mucosal regeneration in the intestinal wall, which makes the link with microbiome support.
Important: For optimal bioavailability, chlorella should always be in broken cell wall form. The intact cell wall of chlorella is not digestible for dogs and cats (and humans). NGD Care Green Detox only uses broken-cell-wall chlorella.
2. Spirulina: antioxidant and immune activation
Phycocyanin: the blue anti-inflammatory pigment
Phycocyanin is the characteristic blue-green pigment of spirulina and one of the strongest plant antioxidants and anti-inflammatories known. It directly inhibits the production of pro-inflammatory mediators via COX-2 inhibition and NF-kB suppression, two of the central signaling molecules in chronic inflammation. Comparative studies show anti-inflammatory effects in animal models similar to pharmacological COX inhibitors but without the gastrointestinal side effects.
Study · Frontiers in Nutrition 2021 · Spirulina in Dogs
Spirulina supplementation in dogs led to significantly higher vaccine antibody response and increased fecal IgA, a direct measure of mucosal immune function. A 2024 study found improved antioxidant status and triglyceride reduction in overweight dogs after spirulina supplementation. Phycocyanin was the most active component in both studies.
Complete proteins and beta-glucans
Spirulina contains 60-70% protein with an excellent amino acid profile: all essential amino acids in a bioavailable form with a digestibility of 85-95%. This makes it valuable in animals with reduced protein intake due to intestinal problems, in older animals with muscle loss and in recovery after illness or surgery. The beta-glucans activate macrophages and natural killer cells for broad immune support.
3. Alfalfa: the most mineral-rich plant
Alfalfa (Medicago sativa) has roots that reach up to 30 meters deep, tapping into minerals and trace elements that most crops do not reach. The result is a plant that is unrivalled in calcium, magnesium, potassium, phosphorus, vitamin K2 and a range of trace elements that are virtually absent from processed feed.
The high chlorophyll content of alfalfa supports liver and kidney detoxification via activation of phase II detoxification enzymes. Chlorophyll is structurally related to hemoglobin and has blood-cleansing properties that have been used clinically for decades. The saponins in alfalfa modulate cholesterol absorption in the gut and support intestinal wall integrity.
When is this supplement most relevant?
Exposure to heavy metals
City dogs and urban animals with soil or air exposure. Animals on a fish-rich diet with possible mercury load. After exposure to pesticides or chemical cleaners.
Support for old age
CGF supports cell regeneration in aging animals. Phycocyanin inhibits inflammation. Alfalfa mineral complex compensates for the reduced nutrient intake in old age.
After long-term medication
Long-term use of NSAIDs, antibiotics or other medication puts a strain on the liver. Chlorella, alfalfa and chlorophyll support liver detoxification. CGF helps to repair the intestinal wall after medication damage.
Basic daily support
As part of the Old Age Protocol or as a daily supplement to feed that is deficient in micronutrients. Particularly suitable in addition to the Bowel Protocol for broad systemic support.
Conclusion
Chlorella, spirulina and alfalfa are three raw materials, each with a unique and complementary action profile. Chlorella binds heavy metals in the gut and stimulates cell regeneration via CGF. Spirulina provides phycocyanin for inflammation inhibition, complete proteins for muscle preservation, and beta-glucans for immune activation. Alfalfa provides the broadest mineral spectrum of all plants supplemented with chlorophyll for liver detoxification.
Together, they cover detoxification, antioxidant protection, immune support, and cell regeneration in one supplement. For dogs and cats that live in a modern environment with toxic loads, aging animals and animals that receive long-term medication, this combination is a logical and well-founded addition to the basic diet.
Literature
- PMC. The long-term algae extract (Chlorella and Fucus sp) and aminosulphurate supplementation modulate SOD-1 activity and decrease heavy metals in patients with long-term dental implants. 2019; PMC6523211.
- MDPI Nutrients. Spirulina and Chlorella dietary supplements: are they a source solely of valuable nutrients? 2024; PMC12609422.
- Frontiers in Nutrition. Spirulina supplementation in dogs produces significantly higher vaccine antibody responses and increased fecal IgA. 2021.
- Watts Cap. Spirulina improved antioxidant status in overweight dogs and reduced triglycerides. 2024.
- Seaweed for Dogs. In a 2023 study, dogs fed a diet with 0.5-1.5% microalgae had increases in beneficial gut bacteria without any negative effect on nutrient digestibility. 2023.
- Puppy Longevity. Chlorella for dogs: heavy metal binding, chlorophyll, and immune support. Overview article 2026.
This information is educational in nature and based on available scientific literature. Chlorella-Spirulina-Alfalfa is intended as a dietary supplement for support and does not replace a veterinary consultation. In case of severe or persistent complaints, always consult a veterinarian.