What’s the Best Spirulina Supplement?
Reviews and Buyer’s Guide

If you’d asked me 10 years ago how I like my powdered green algae served, I probably would have questioned your sanity. However, I’ve become a big fan of ​certified organic spirulina supplements, and I credit them for a lot of my health improvements since switching to veganism.

As far as superfoods go, organic spirulina just does it all. It works as an antioxidant, assists in weight loss, lowers blood pressure, and detoxifies the body.

But, as with all supplements, the best ones are hard to find. So, our team here did some extensive searching and testing to bring you some really good options.

ImageProductFeaturesPrice
Organifi Green Juice - Organic Superfood Powder - 30-Day Supply - Organic Vegan Greens - Helps Decre

Organifi Green Juice - Organic Superfood Powder - 30-Day Supply - Organic Vegan Greens - Helps Decre

  • Gently dried super greens: now, you can get all your nutrient-filled superfoods in one glass for pow
  • Organic greens powder in a bottle: imagine drinking some of the world's premium nourishing superfood
  • Results you can see: imagine how you will feel once you start getting a daily dose of greens thats r
  • Get the most out of what youre paying for: each scoop is packed with nutritious whole foods, includi
  • Contributing to the world we live in: organifis top-quality blends are shared across the globe. we s
9.7
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TRansparent Labs

TRansparent Labs

Prebiotic Greens does it better in two parts. Part-One is Algae Greens: Each serving of Prebiotic Greens contains 3 grams of ultra-nutrient rich spirulina and 3 grams chlorella to deliver vitamins, minerals, protein, and heavy-metal detoxification [1, 2, 3, 4, 5]. Spirulina and chlorella offer unparalleled nutrition on a gram per gram basis [6, 7, 8, 9]. Part-Two is Prebiotic Fibers: Each serving of prebiotic greens contains 3 grams organic acacia fiber , 3 grams organic green banana flour [12, 13], and 1 gram organic Jerusalem artichoke fiber [14, 15, 16] which together provide gut-healthy and gluten free soluble, un-soluble, and slow fermenting fibers. This two pronged approach maximizes nutrient utilization by optimizing your often-overlooked microbiome and consequently affecting all aspects of digestion and wellbeing.

9.5
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Nutrex Hawaii, Pure Hawaiian Spirulina Powder, Vegan, Supports Immune System, Heart, Cells and Energ

Nutrex Hawaii, Pure Hawaiian Spirulina Powder, Vegan, Supports Immune System, Heart, Cells and Energ

  • Get your daily dose of one of natures original superfoods with pure hawaiian spirulina; we grow it n
  • Pure hawaiian spirulina supports healthy aging by boosting the immune system, provides nourishment f
  • Take 1 tsp daily on its own or mix it into food or a beverage; an excellent source of vitamins a, k1
  • Our spirulina is vegetarian, vegan, and free of gmos, gluten, lactose, soy, pesticides, herbicides,
  • Grown on our sustainable hawaiian farm with natural sunlight and lava-filtered water; a healthy envi
9.1
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Micro Ingredients Organic Spirulina Powder, 16 Ounce, Raw Spirulina (Arthrospira Platensis), The Ric

Micro Ingredients Organic Spirulina Powder, 16 Ounce, Raw Spirulina (Arthrospira Platensis), The Ric

  • Usda raw spirulina organic powder, 1 pound (16 ounce), treated by heat only, non-irradiated and vega
  • Rich in vegan protein, enzyme, fiber, amino acids (omega 3 6 9, gla, arginine), flavonoids, immune v
  • No gmos, no additives, no preservatives, no fillers, no artificial colors, no flavor, no soy and no
  • Scoop included to get the measurement every time. take it daily with or between meals by adding it t
  • Powder lover? take it naturally in powder for higher concentration, quicker absorption, easier on th
8.8
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Organic Spirulina Powder 12 oz - Kate Naturals. All-Natural Vegan, Non-GMO, Gluten-Free & Organic Nu

Organic Spirulina Powder 12 oz - Kate Naturals. All-Natural Vegan, Non-GMO, Gluten-Free & Organic Nu

  • A truly super superfood: ready to amp up your daily smoothie or post-workout shake? take your day-to
  • Protein & nutrient packed: each scoop of this superfood powder is filled with essential vitamins & n
  • Perfectly packaged: our organic spirulina powder is carefully packaged and ready to enjoy in a conve
  • Anti-inflammatory properties: because spirulina powder is naturally filled with antioxidants, this s
  • Love it guarantee: we understand that you have placed your trust in us to provide you with the best
8.6
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Now Foods Organic Spirulina Tablets, 100

Now Foods Organic Spirulina Tablets, 100

  • Super green/500 mg per serving: spirulina is a blue-green microalgae that has naturally occurring pr
  • Pure, nutrient rich: now certified organic spirulina tablets are pure and contain no excipients, bin
  • Classifications/certifications: usda certified organic, non-gmo project verified, vegan/vegetarian,
  • Gmp quality assured: npa a-rated gmp certification means that every aspect of the now manufacturing
  • Packaged in the usa by a family owned and operated company since 1968
  • During the summer months products may arrive warm but amazon stores and ships products in accordance
8.2
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Organic Spirulina Powder: 4 Organic Certifications - Certified Organic by USDA, Ecocert, Naturland & OCIA - Vegan Farming Process, Non-Irraditated, Max Nutrient Density (8 oz.)

Organic Spirulina Powder: 4 Organic Certifications - Certified Organic by USDA, Ecocert, Naturland & OCIA - Vegan Farming Process, Non-Irraditated, Max Nutrient Density (8 oz.)

8
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Earthrise ® Spirulina Natural 6.4oz powder, Natural Premium Spirulina from California- Support Immu

Earthrise ® Spirulina Natural 6.4oz powder, Natural Premium Spirulina from California- Support Immu

  • #1 spirulina on earth since 1976, from the pioneer producer of spirulina in north america. grown in
  • Highest quality and safety: earthrise spirulina is grown using colorado rivers mineral-rich waters,
  • Immune booster: spirulina has been shown to promote innate (inborn) immunity, the bodys first line o
  • Superfood: this amazing algae contains an abundant amount of nutrients such as over 68% protein, all
  • Certifications: non-gmo project verified, kosher and certified. gluten free, dairy free, soy free, k
  • Nutritional: potent phycocyanin (super blue antioxidant unique to spirulina), rich in natural vitami
7.7
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Organic Spirulina Powder (16 Ounce): Naturally Vegan, Supplies Folate, Vitamin B12, Iron, Omega Fatt

Organic Spirulina Powder (16 Ounce): Naturally Vegan, Supplies Folate, Vitamin B12, Iron, Omega Fatt

  • Nature's perfect multivitamin: support your overall health with 100% usda certified organic spirulin
  • Nature's perfect multivitamin: support your overall health with 100% usda certified organic spirulin
  • Always natural, never synthetic: know where your spirulina comes from! harvested in natural freshwat
  • Plant-powered protein: our gluten-free, vegan spirulina powder organic tastes super fresh and each s
  • For long term health benefits: this lean, green, superfood machine makes a world of difference for y
  • An energy and immunity boost: feel your very best every day! our spirulina organic powder boosts ene
  • Take care of your body: spirulina has excellent anti-inflammatory properties and can help improve en
7.4
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HealthForce SuperFoods Spirulina Manna - 5.25 oz Spirulina Powder - All Natural Nutrient Rich Superf

HealthForce SuperFoods Spirulina Manna - 5.25 oz Spirulina Powder - All Natural Nutrient Rich Superf

  • The ultimate superfood - spirulina manna is a blue-green microalga abundant in amino acids, chloroph
  • Vital health benefits - it is known to support immune function, a healthy inflammatory response, and
  • Powerful enzymes - spirulina has been shown to encourage and support the growth of healthy bacterial
  • All natural & organic - vegan, kosher, non-gmo & gluten free; our truganic standard ensures purity &
  • Highest manufacturing standards - made in the u.s., in our certified organic, cgmp compliant facilit
7.2
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Premium Chlorella Spirulina 1,250 Tablets - 4 Months Supply, Non-GMO, Vegan Organic Capsules, Broken

Premium Chlorella Spirulina 1,250 Tablets - 4 Months Supply, Non-GMO, Vegan Organic Capsules, Broken

  • [ ] - our chlorella spirulina 50/50 tablet mix combines two of the most nutrient-dense superfood
  • [ ] - the blue-green algae contained in our spirulina pills is an excellent source of vitamins, m
  • [ & ] - we use a patented, low-pressure flash expansion technique to source our chlorella spir
  • [ ] - we carefully cultivate our chlorella and spirulina to produce the highest quality tablets a
  • [ ] - each bag contains 1250 chlorella pills which, following the daily recommended dose of 2g, w
9.5
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1 – ​Organifi Green Juice ​(Editor’s Choice)

The team unanimously agreed on Organifi as our top recommended spirulina supplement because of 3 things — it’s organic, vegan, and contains more greens than anything else on this list.

It’s basically pure spirulina and every superfood there is, including moringa, chlorella, mint, matcha green tea, ashwagandha, and wheatgrass.

An interesting review we found from a user online is how Organifi helped regulate his blood pressure and cholesterol levels. It has also helped other users in losing weight healthily.

PROS

  • ​Contains all natural ingredients backed up by science
  • check​Mixes well
  • check​Tastes good for a greens powdered juice
  • check​Has other superfood content

​CONS

  • ​I’m not a fan of the proprietary blend

It’s also one of the best in taste. While it doesn’t necessarily taste like a milkshake, it has a fresh, minty flavor that’s quite enjoyable for a spirulina green juice.

The only thing I’m not satisfied with is it hides the ingredient amount in a proprietary blend.

​Use code: VEGANLIFTZ for 15% off until the end of [month]

​2 – Transparent Labs Prebiotic Greens

Transparent Labs (see also ‘Transparent Labs CoreSeries BCAA Glutamine Review‘) has managed to live up to its claims that it has created the best quality spirulina supplements.WellnessSeries Prebiotic Greens

With a unique blend of organic spirulina and chlorella, the gluten free ingredients of the prebiotic greens are backed up by scientific studies [1]. These studies support their claim that it can help with detoxification and significantly lower free radicals.

And from a nutrition perspective, it also provides a healthy dose of prebiotic fibers to help your digestion.

PROS

  • ​Combination of organic spirulina powder and chlorella algae claims to help detox processes
  • checkContains 8 g of prebiotic fiber to improve your gut health
  • check0 grams of cholesterol and fat so it won’t mess up your diet
  • checkThe unflavored option makes it easy to add to your food and smoothies

​CONS

  • A flavored option would be great to make it a nicer drink

The taste isn’t too bad, but I’d love to see a flavored option to make it just a bit easier to take as a morning drink (see also our article on Red Bull).

​3 – Nutrex Pure Hawaiian Spirulina

If you’re not a fan of the taste of algae (let’s face it, who really is?), then these Nutrex Hawaii capsules are going to be the best alternative.

From a nutrition point of view, you’ll still get all the value, but you can avoid pinching your nose to get it down.

You will need to take 3 capsules a day of this pure Hawaiian spirulina for the full effect, ​while also allowing you to spread out the benefits throughout the day [2].

PROS

  • 3 g of quality spirulina to support immune health and energy levels
  • checkCertified vegan, non-GMO, and gluten-free
  • check​Easy to swallow organic spirulina tablets
  • checkGood bulk discount options available

​CONS

  • Can leave a fishy aftertaste and smell

One thing I should mention is that a few people have reported that it can cause your breath to smell a bit fishy, so it might be best to take it before food.

​4 –Micro Ingredients Organic Spirulina Powder

Do you worry about the heavy metal content of some seafood? It’s certainly something that is a big issue with a lot of fish and shellfish.

But as a vegan, I was surprised that many sea plants could also contain these dangerous minerals.

BN Labs makes it clear in their advertising that they rely on third-party testing to verify the gluten free ingredients and lack of pesticides and heavy metals.

With absolutely zero cholesterol and only 1 g of fat, this organic spirulina powder from BN Labs is certainly a very healthy option.

PROS

  • Contains no added fillers or synthetic additives
  • checkCertified organic spirulina for a more natural powder
  • checkTested for heavy metals and pesticides
  • checkChemical-free, non-GMO processing to ensure the best health benefits

​CONS

  • The taste takes a little bit of getting used to

Personally, the taste didn’t bother me too much; it certainly beats having seaweed and algae in your breakfast (yes, that is a thing).

5 – Kate Naturals Spirulina Powder

Kate Naturals is another favorite here at the office, and it’s possibly one of the cheapest products available.

It doesn’t have the same fiber and high dosage of active nutrients as the above Transparent Labs option, but it’s still a positively reviewed diet supplement (see also ‘What Are The Best SARMs to Increase Endurance?‘).

It has a total of 76 servings per container, so if you want to get a larger dose, that’s still a cost-effective choice.

A lot of people like the fact that it’s grown in California and certified to be pesticide-free, which does provide some extra peace of mind.

PROS

  • 3 g of organic spirulina provides sufficient protein and vitamin A boost
  • checkCertified non-GMO and gluten-free
  • checkGrown in California freshwater to make it pesticide-free
  • checkLow calories per serving won’t impact your weight loss goals

​CONS

  • Doesn’t mix that easily with water

The only downside, if you don’t like shaking your supplements like a professional cocktail master, then it might be best to use a blender.

​6 – NOW ​Foods Spirulina Powder

Another excellent ​spirulina supplement that my dietitian recommended ​comes from NOW Foods.

​It has a vegan certification, and you get the recommended daily dose of 3 g of organic spirulina.What a lot of people like about it is that you won’t need to take other dietary supplements to boost your intake of B12, so you can save a bit of money and still get all the essential nutrients.

PROS

  • 3 g of spirulina per serving provides 2 g of healthy protein
  • checkMany positive reports from users about increased energy levels
  • check It’s a goodvegan source of vitamins A and B12
  • checkCertified ​organic, ​non-GMO, and vegan to ensure high-quality ingredients

​CONS

  • A flavored option would be nice as it doesn’t have a great taste

I generally mix these nutrition supplements with a morning veggie smoothie, so the flavor doesn’t bother me. But a few of the flavor-sensitive guys on the team here aren’t a big fan of the taste.

​7 – Triquetra Health Organic Spirulina Powder

What I like about this Triquetra product is that the company has gone a long way to get as many third party certifications as possible.

​What users appreciate the most is that the content of this organic spirulina powder has been certified free of pesticides, herbicides, and other harmful chemicals.From a nutrition perspective, it covers a broad range of essential amino acids, minerals, as well as vitamins A and K [3].

These all help your body’s immune system and overall health.

PROS

​CONS

  • The powder doesn’t mix easily in a shaker

One thing you might want to keep in mind about this spirulina supplement is that you may need to blend it and not rely on a shaker.

​8 – Earthrise Spirulina Natural

If you want to stock up on a year’s supply of certified organic spirulina tablets, then Earthrise is possibly one of the most cost-effective ways.

The content of this bottle gives you 360 tablets, which is also going to be favored by those that just don’t like the taste of organic spirulina in general.

With plenty of vitamins and minerals, your body will get a good boost, and there are many positive reviews on the quality of the nutrients.

PROS

  • 3 g of organic spirulina in each serving
  • checkContains vitamins A and K to help support a healthy immune system
  • checkProvided in convenient tablet form rather than powder
  • checkComes in larger bulk-buy bottles to save on costs

​CONS

  • You might need to break down the tablets to make them easier to swallow

Some people found that the spirulina tablets can be a bit difficult to swallow, so you might want to break them in half before taking them.

​9 – Sari Foods Organic Spirulina Powder

This is another one of those products that can provide you more than just the primary benefits from pure spirulina powder.

It can supply you with all the B12 you need as well as some bonus omega fatty acids.A lot of reviewers also highlight the fact that it provides 7 g of protein with a full range of amino acids to support many body functions.

PROS

  • Designed to help with energy and vitality daily
  • checkGood source of vitamins A and B12 as well as iron and chromium
  • checkProvides 7 g of vegan-friendly protein
  • checkMixes easily in a shaker

​CONS

  • Has quite a fishy and salty aftertaste

One word of warning for those with sensitive taste buds, ​this organic spirulina powder does have a bit of a fishy aftertaste.

​10 – Organic Spirulina Powder

Sari Foods has put a lot of effort into getting vegan and USDA organic certifications, and they claim to use only high-quality algae.

A lot of people made positive comments about how this organic spirulina powder helped improve their energy levels.But there is a reason this one has been pushed ​towards the bottom of the list.

PROS

  • Many positive reviews about improved strength and energy
  • checkCertified ​organic, vegan, non-GMO, and gluten-free
  • checkClaims to use some of the highest quality algae

​CONS

  • The label does have a lead warning which doesn’t make it suitable for long-term use
  • banThe taste leaves a bit to wish for

This product used to be higher up on my list until someone pointed out that the label actually has a lead warning on it. Since I noticed that, I’ve switched to some of the other options above, as it’s not a risk worth taking.

1​1 – Soul Organics Spirulina Powder

This blue-green algae product from Soul Organics is very popular on Amazon, mainly because it’s possibly one of the cheapest options of all the organic products.

The content of this certified organic spirulina powder is also low in cholesterol and provides a good boost of vitamin A.

Also, from a calorie perspective, you won’t have to worry that it might mess with your fasting periods.

PROS

  • Good source of vitamin A
  • checkWith low cholesterol and calories, it won’t mess up your diet
  • checkVery good value for money compared to other organic products

​CONS

  • The powder doesn’t mix well so make sure you plan to use it in a blender
  • banIt has quite a nasty aftertaste

One thing we didn’t like about this spirulina powder is that you’ll struggle to get it properly mixed in a shaker. It also has one of the most overpowering tastes, so you might want to mix with other strong flavors.

What To Look For When Buying Spirulina

Protein Powder,Iron Providers

There are a handful of things that our team focused on when assessing the ingredients of the listed spirulina powder supplements. The best products we found had certain nutrients on the content labels​, and here is what my dietitian said we should focus on:

Protein – Spirulina is a great source of vegan protein which covers a wide range of amino acids that your body needs to function properly [4].

Iron – Iron is one of the vital nutrients that a lot of vegans can lack in their early days of adopting this lifestyle. Because spirulina is so nutrient-dense, it has been proven to supply plenty of iron.[5]

Vitamins – You’ll find that the vitamin content of spirulina is very supportive of providing you with vitamins A, B12, and K. This can eliminate the need for many other supplements.

Related article: Plant-based multivitamins

Powder Vs. Capsules – In the above list, we provide options as both powder and capsules. Personally, I always stick to taking it the way nature intended, but if you really can’t handle the taste, then stick with the pills.

Now, let’s check out some of the benefits.

Health Benefits Of Spirulina

Measuding Blood Pressure, Measuring Weight Loss

As I mentioned above, I never thought that I would ever feature algae in my diet. But once I found out about some of the health benefits of just a small dose of high quality spirulina powder, I was convinced.

Reduce Blood Pressure – Heart health is a serious issue these days. Upon reading several studies that linked spirulina to reduced blood pressure (see also ‘How Does Pre-Workout Affect High Blood Pressure?‘) [6], I was sold.

Detox – ​Spirulina is one of the most antioxidant-rich plant foods that you can find. If you have concerns over the accumulation of toxins in your body, maybe from years of eating meat, then this is a must-take supplement (see also ‘Performance Lab Mind Review’).

Spirulina is a fantastic source of antioxidants, which can protect against oxidative damage. Its main active component is called phycocyanin. This antioxidant substance also gives spirulina its unique blue-green color.

Joe Leach

Registered Dietitian

Weight Loss – This is another one of the important benefits for anyone struggling with maintaining their body weight. Studies have shown that after 3 months of taking this supplement, BMI in test groups went down [7].

Side Effects Of Spirulina

The good news is that these simple algae are not known as a common allergen, and most people will tolerate the small amounts that you need to take. At the same time, it can be a good idea to try lower doses when you first start taking it.

If you notice some nausea or headaches, then it could be the ​spirulina supplement you chose, or it might simply take a few days for your body to adapt to these nutrients.

Take it easy at first, and once you lose some of the side effects, then you should be in a great position to really make improvements to your health. Also, some spirulina products may contain heavy metals, which can affect your overall health if taken in copious amounts.

Why Is Spirulina Considered Superfood?

Best spirulina FAQ Banner

When is the best time to take spirulina?

The best time to take spirulina is first thing in the morning with your breakfast or a smoothie. This gives your body a boost to get you through the day by providing more energy.

 

Is spirulina safe for the kidneys?

Yes, spirulina is safe for the kidneys (see also ‘Can Certain Supplements Cause Kidney Stones?‘), unless you have underlying kidney issues. In that case, it’s best to talk to your doctor before you start taking these supplements.

 

​How do you make spirulina taste better?

You can make spirulina taste better by mixing it with fruit and veg that have a stronger taste. Creating veggie smoothies is a common option, and it will suppress even stronger tasting products.

 

​Can spirulina make you gain weight?

No, spirulina won’t make you gain weight as you won’t be taking in large volumes of calories. It also has been shown to trigger metabolic processes that help reduce your body fat (see also our guide to tightening neck fat).

​Does spirulina break a fast?

Yes, spirulina will break a fast as it will introduce both macro and micronutrients. With 70% of its content made up of protein, even a small amount will impact your fast.

Which Product Should You Choose?

Of all the best spirulina supplements we tested out, Organifi is the one we all eventually agreed ​deserves the ​#1 spirulina protein powder. It contains certified organic spirulina and many other ​green superfood blends, to support your overall health.

Between the positive online reviews, our own experience, and the fact that it has a very refreshing taste, it had us all convinced.

If you’ve taken any of the above products, then make sure you let us know on social media how it worked for you.

Organifi Green Juice - Organic Superfood Powder - 30-Day Supply - Organic Vegan Greens - Helps Decre
  • Gently dried super greens: now, you can get all your nutrient-filled superfoods in one glass for pow
  • Organic greens powder in a bottle: imagine drinking some of the world's premium nourishing superfood
  • Results you can see: imagine how you will feel once you start getting a daily dose of greens thats r
  • Get the most out of what youre paying for: each scoop is packed with nutritious whole foods, includi
  • Contributing to the world we live in: organifis top-quality blends are shared across the globe. we s
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