What’s the Best Spirulina Powder in 2024?

As an experienced naturopath who has spent countless hours tasting and evaluating a pretty wide range of the market’s spirulina options, I’m here to give you the lowdown on the best choices. It took me six months to compile this information.

This wonderful blue-green cyanobacteria is a rich source of protein, vitamins, and minerals that provide a range of health benefits, including improved immune function and enhanced energy levels. It’s a magic food, and I try to have some almost every day.

I’ll share my expertise in this article and give you the inside scoop on the top spirulina powder brands in 2024.

NB: This website contains affiliate links; we may earn a commission from purchases made through those links. That never affects the price you’ll pay or the impartiality of our reviews.

buddha surfing with a glass of 'best' spirulina illustration

The 10 Best Spirulina Supplements

Best Organic Spirulina Supplement: NaturaleBio (Indian origin)

Best Organic Spirulina Supplement NaturaleBio

Organic Spirulina Algae Powder from NaturaleBio is cultivated in India, specifically in the province of Tamil Nadu, and is marketed as 100% bio, natural, and pure. Of all the ones I’ve taken, I liked this the most. It felt genuinely natural and carefully produced. Also, I like the Indian origin.

This is an important consideration, as natural supplements from China – where the majority of Spirulina comes from – have faced quality control issues in recent years. By opting for spirulina cultivated in India, you can have greater confidence in the product’s safety and quality.

The powder has a dark green, blue-tinged colour, characteristic of high-quality spirulina. NaturaleBio spirulina is dried at a low temperature to preserve its nutrients and high phycocyanin content.

In terms of taste and texture, this powdered spirulina has a unique flavour that can be described as astringent and slightly fishy.

I also appreciate that this spirulina powder is certified organic by supervisory boards authorized by the Italian Ministry of Agriculture. This certification ensures that the product is produced without the use of harmful additives and excipients.

Best Spirulina Tablets: NaturaleBio:

From the same producer comes these excellent spirulina capsules at 17% phycocyanin.

This is a certified organic product from Tamil Nadu, India that is spray dried at very low temperatures.

Every 500mg spirulina tablet contains approximately 325mg of protein. So 6 spirulina tablets would correspond to 1.95g of protein!

NaturaleBio is a company I’ve used a lot over the years. They are ethical and carry out precise microbiological and multi-residual analyses on each product.

Overall, this is a highly recommended product.

Best ‘Blue’ Spirulina Supplement: Spring Blossom Superfoods

Spring Blossom Superfoods offers 5-75g Pure Blue Spirulina Powder, which is an extract of the active ingredient phycocyanin in its purest form.

It boasts a much higher concentration of antioxidants and a beautiful, vibrant blue color without the fishy smell of normal spirulina.

This blue spirulina contains nutrients that you won’t find anywhere else and has powerful anti-inflammatory and free-radical fighting properties. It can strengthen the immune system, improve metabolism and digestion, support a healthy heart, aid cognitive function, naturally increase energy levels, alleviate allergy symptoms, help reduce LDL (bad cholesterol) levels, support liver health, and help reduce inflammation.

This pure superfood supplement is 100% natural, vegan, vegetarian, non-GMO, and gluten-free. It is easy to use as a natural food dye, and you can blend it into breakfast bowls, smoothies, lattes, baked goods, paste, and many more. Spring Blossom Superfoods source their blue spirulina powder from the purest form of phycocyanin cultivated in spring water from Taiwan.

They only offer 75g packs in retail packaging, while the sample packs (5g/10g/20g) come in non-branded plain paper pouches.

Best Hawaiian Spirulina Supplement: Nutrex

Nutrex Hawaii is a popular brand for Hawaiian spirulina. They offer high-quality spirulina supplements that are rich in vitamins, minerals, and phytonutrients and are available in both tablet and powder form.

Their spirulina products are grown and harvested in facilities on the Kona Coast of Hawaii, which is known for its pristine and pure environment. Nutrex Hawaii places a high emphasis on quality control testing and has earned third-party certifications to ensure the safety and quality of its products.

Nutrex Hawaii places a strong emphasis on quality assurance and safety in the production of its microalgae products. They are regulated by several organizations, including the FDA, the State of Hawaii Department of Health, and the US Department of Agriculture, and have frequent independent audits and rigorous Quality Assurance and Supplier Approval programs in place. They are proud to be the producers of the first Non-GMO Project verified Spirulina brand. Nutrex Hawaii provides products based on two Generally Recognized as Safe (GRAS) ingredients by the US FDA for all food, beverage and nutritional supplement uses. They have maintained their GMP certification since September 2007.

Nutrex Hawaii grows its microalgae for health and nutrition in a biosecure zone free of pesticides and herbicides, ensuring that consumers receive the highest quality product from a source they can trust.

Best Spirulina Supplement for Dogs and Cats: Aniforte

Aniforte’s Organic Spirulina Platensis Algae Powder for dogs and cats is a valuable product that provides essential amino acids, minerals, and vitamins for your pet.

I really rate Spirulina for animals: it is particularly rich in natural chlorophyll and protein, making it an optimum natural supplement that promotes metabolic processes and supports the immune system. This product is 100% natural and obtained from the vital substance-rich microalgae spirulina, providing your pet with over 2,000 natural nutrients.

AniForte’s Natural Spirulina can be easily mixed into your pet’s daily feed, and the amount varies according to their size.

The product is a natural product made from freshwater algae, produced in the best organic quality, and free of heavy metals and synthetic additives. The product should be stored in a cool, dry place away from sunlight.

Best Spirulina Gummies: Chewyvites

I like this fun product. It’s not top-level nutrition but as a short cut it’s a good idea.

CHEWY VITES Adults Superfoods Spirulina” are gummy vitamins enriched with spirulina and vitamin C so if you’re trying to get greens into our kids, look no further! Each serving of the gummies contains 200mg of Spirulina and 100% of the recommended daily intake of Vitamin C.

The gummies are made with real fruit juice and are suitable for vegans and vegetarians.

They are formulated to support the immune system, reduce tiredness and fatigue, and provide antioxidants. The recommended dosage for adults is two gummies per day.

The gummies are made in the UK and come in a pack of 60

Best Bulk Spirulina Powder: Sevenhills

Sevenhills Wholefoods offers organic spirulina powder in 200g, 500g, and also 1kg sizes at excellent prices.

Their spirulina is harvested in freshwater and contains a wide range of micronutrients, including magnesium, riboflavin, iron, and fiber, and is high in protein with over 60g per 100g of powder. Spirulina is also a great source of Vitamin A.

The algae are collected using mesh screens, wet and then spray-dried. The product is ground and sieved to create the organic spirulina powder. The suggested use is to take up to 5g in water, smoothie, or juice, and it can also be added to baked goods and homemade ice-creams.

The product is certified organic by the Soil Association and registered by the Vegan society, and does not contain any substances causing allergies or intolerances as ingredients or by the possibility of cross-contamination. Sevenhills Wholefoods also offers organic spirulina tablets.

Best Spirulina Skin Formula: Floradapt

Floradapt offers a natural probiotic and superfood blend formula called Pure Skin for balanced, clearer, and softer skin. One of the main ingredients is spirulina.

It is a specifically developed blend of high-quality bacterial microorganisms and algae (spirulina) to balance the skin, decrease oil production, and reduce acne or inflammation. Pure Skin is rich in beneficial nutrients that will help balance gut and skin status, decrease oil production, and levels of bad bacteria in the skin, and balances skin and gut microbiota which helps reduce skin inflammation and acne.

Spirulina, also known as Arthrospira platensis, is considered a superfood and is rich in antioxidants, proteins, Omega 3 and 6, and many essential minerals and vitamins. Pure Skin is clinically researched and helps regulate skin oil levels, reduce inflammation, redness, and irritation, and deliver minerals, vitamins, and proteins to the skin.

Best Spirulina/Chorella Combo Supplement: Vegavero:

Vegavero offers a Spirulina Chlorella Combo, which is a natural multivitamin that offers a full spectrum of nutrients including B vitamins, beta carotene, minerals like calcium, iron and magnesium, as well as other phytonutrients like chlorophyll and phycocyanin.

The algae are sourced from controlled organic cultivation, and are carefully processed to preserve their abundance of nutrients. The product is regularly tested for microbial contamination, pesticides, and heavy metal residues. The capsules are highly dosed, with a daily dosage of 2000 mg algae powder representing a natural source of essential nutrients. The product is non-GMO, additive-free, and suitable for vegans.

The package contains 240 capsules, which is a 3-month supply, and the recommended dosage is 3 capsules per day. The product is part of Vegavero’s organic line, which contains products made from 100% organic raw materials, with no chemicals or pesticides used in organic farming, and the application of genetic modifications is strictly forbidden.

Best Spirulina Gummies with CBD: CBDFX

These are spirulina gummies with CBD, which come in a bottle of 60 gummies. Each vegan gummy contains 25mg of CBD oil, with a total of 1500mg of premium CBD per bottle.

The gummies also contain turmeric and spirulina, which have been used in homoeopathic medicine for centuries to ease symptoms caused by chronic inflammation. Turmeric is known for its antioxidant and anti-inflammatory properties, which help boost immunity, while spirulina is believed to lower cholesterol and boost the body’s immune system. It is important to note that this product is only suitable for those over 18 years old and should not be consumed by children.

Factors I Considered When Comparing Spirulina Supplements

Several important factors must be considered when searching for the best spirulina powder. Here are the top things that I kept in mind during my search:

  • Quality: The quality of spirulina powder is crucial. I made sure to look for brands that used high-quality spirulina, preferably organic and grown in a controlled environment. This was important to me because I wanted to ensure that I was getting a product that was free from harmful pesticides or other contaminants.
  • Purity: I also ensured that the spirulina powder was free from contaminants, such as heavy metals or harmful chemicals. This was important to me because I wanted to make sure that I was consuming a product that was safe for me to consume on a regular basis.
  • Nutritional Content: I checked the nutritional content of each spirulina powder that I considered. This included looking at each product’s protein, vitamin, and mineral levels. I wanted to ensure that I was getting a product high in these nutrients.
  • Processing: I also looked at the processing methods used by each brand. I wanted to choose a brand that used gentle processing methods to preserve the nutrients in the spirulina powder.
  • Price: Spirulina powder can vary in price, so I made sure to compare prices across different brands. While I didn’t want to overspend, I also didn’t want to compromise on quality to save a few bucks.
  • Brand Reputation: Finally, I researched each brand and read reviews from other customers. I chose a reputable brand that had a good track record in producing high-quality spirulina powder. This gave me confidence in my purchase and helped me feel good about the product that I was consuming.

The Dangers of Spirulina Contamination

There are a number of concerns related to spirulina contamination that you should be aware of.

One of the main concerns is heavy metal toxicity. Spirulina products can contain varying levels of heavy metals, including lead, mercury, and arsenic. When consumed excessively, these heavy metals are toxic and can have harmful effects on the body, such as damaging the nervous system and the liver. Therefore, buying spirulina products from trusted brands that maintain low levels of heavy metals within safe ranges is crucial.

Another issue is the contamination with toxic substances called microcystins. Spirulina is often harvested from natural waters; without proper quality control, these waters can be contaminated with microcystins. These toxins can cause liver damage. In some cases, a significant portion of commercially available spirulina supplements was found to contain unsafe levels of microcystins, emphasizing the importance of choosing a brand with high-quality control standards.

Pregnant and nursing women should also be cautious with spirulina supplements. The high levels of certain vitamins in spirulina may be harmful to the unborn child. There’s a reported case where spirulina supplements taken during pregnancy led to dangerously high calcium levels, causing seizures in the newborn.

Despite these concerns, it’s possible to consume spirulina safely. The key is to choose a reputable brand that uses independent lab certification to confirm their product is free from contamination. These certifications can usually be verified by the consumer for added assurance.

What to Avoid When Buying Spirulina

When I’m in the market for spirulina, I find it crucial to be alert to potential pitfalls. These can vary from substandard ingredient sourcing to misleading marketing claims. In this section, I detail several red flags that I believe should serve as cautionary indicators for any prospective buyer:

Non-Disclosed Additives

I approach any spirulina product that does not clearly enumerate all its ingredients with caution. The presence of non-disclosed additives, fillers, or artificial ingredients can significantly compromise both the purity and nutritional value of the supplement.

Ambiguous Sourcing

I remain wary of spirulina products that lack transparency in their sourcing practices. Spirulina sourced ambiguously raises concerns about its sustainability and ethical farming methods, which makes it difficult to assess the product’s overall quality.

Absence of Certifications

A lack of organic or vegan certifications serves as a warning sign for me. Such certifications are benchmarks for quality and ethical practices. Their absence may suggest that the product fails to meet universally recognized standards.

No Third-Party Testing

When a product has not undergone third-party testing, it lacks impartial verification of its quality and purity. This absence of testing makes it challenging to ascertain whether the product meets health and safety standards, thus elevating the associated risks.

Exorbitant Pricing

While I understand that quality often comes at a price, I remain cautious of spirulina that is priced exorbitantly without justifiable reasons. High cost does not always indicate high quality, and it may simply be a function of brand positioning or marketing.

Unsubstantiated Health Claims

I view products that make sweeping or exaggerated health claims with skepticism. Any therapeutic or health-promoting assertions should be substantiated by credible scientific research; otherwise, such claims are likely misleading.

Poor User Reviews

Customer feedback is an invaluable resource for assessing product quality. Poor or limited user reviews, particularly those that pinpoint issues like bad taste, difficulty in digesting, or absence of perceived benefits, serve as cautionary indicators for me.

Limited Nutritional Information

Insufficient or vague nutritional information restricts my ability to make an informed purchasing decision. Comprehensive nutritional details are essential for understanding the product’s potential health benefits and safety.

The 10 Best Spirulina Supplements: Comparison Table

CategoryBrandKey FeaturesOrigin
Best OrganicNaturaleBio100% bio, natural, and pure; high phycocyanin contentIndia, Tamil Nadu
Best TabletsNaturaleBio17% phycocyanin; 325mg protein per 500mg tabletIndia, Tamil Nadu
Best ‘Blue’ SpirulinaSpring Blossom SuperfoodsHigh concentration of antioxidants; vibrant blue colorTaiwan
Best HawaiianNutrexHigh in vitamins, minerals, and phytonutrients; third-party certificationsHawaii, USA
Best for PetsAniforteRich in natural chlorophyll and protein; supports immune systemN/A
Best GummiesChewyvitesEnriched with vitamin C; supports immune systemUK
Best Bulk PowderSevenhillsAvailable in 200g, 500g, and 1kg; high protein contentN/A
Best Skin FormulaFloradaptProbiotic and superfood blend for skin healthN/A
Best Spirulina/Chlorella ComboVegaveroFull spectrum of nutrients; non-GMO, additive-freeN/A
Best with CBDCBDFXContains 25mg of CBD oil per gummyN/A

Cara Hayes is an experienced natural health practitioner with a Masters in Clinical Nutrition & Dietetics from the University of Sydney. She has been writing for Plankton for Health since 2019 and contributes widely to many well-known health publications.