Best Spirulina Supplement to Buy in 2024: Our Detailed Reviews

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Best Spirulina Supplement

Best Spirulina Powder
Nutrex Hawaii, Pure Hawaiian Spirulina Powder, Vegan, Supports Immune System, Heart, Cells and Energy, 16 Ounce
Best Spirulina Tablets
NOW Supplements, Certified Organic, Spirulina 1000 mg (Double Strength), Rich in Beta-Carotene (Vitamin A) and B-12 with naturally occurring GLA , 120 Tablets
Best on a Budget
Healthy Orgins Organic and Kosher Spirulina Tablets, 500 Mg, 720 Count
Nutrex Pure Hawaiian Spirulina
NOW Spirulina Tablets
Healthy Origins Spirulina Tablets
Best Spirulina Powder
Nutrex Hawaii, Pure Hawaiian Spirulina Powder, Vegan, Supports Immune System, Heart, Cells and Energy, 16 Ounce
Nutrex Pure Hawaiian Spirulina
Best Spirulina Tablets
NOW Supplements, Certified Organic, Spirulina 1000 mg (Double Strength), Rich in Beta-Carotene (Vitamin A) and B-12 with naturally occurring GLA , 120 Tablets
NOW Spirulina Tablets
Best on a Budget
Healthy Orgins Organic and Kosher Spirulina Tablets, 500 Mg, 720 Count
Healthy Origins Spirulina Tablets

Let’s dive into our reviews for the best spirulina supplement!

One of the true superfoods, spirulina is a dietary supplement extracted from algae.

While it might not be as widely known as other superfoods, spirulina can provide a real health kick. The sea-derived supplement is rich in vitamins, minerals, proteins, and antioxidants.

It’s even considered to be a natural antihistamine, which should make it extra appealing to those who suffer with allergies during Spring.

As far as health supplements go, spirulina is up there with the best, and you’ve got nothing to lose by giving it a go. If you’re interested in knowing more about the benefits, how you should take it, and who you should buy it from, read on to find out.

Here are our top picks!

👑 Our Pick for Best Overall

Nutrex Pure Hawaiian Spirulina
6,164 Reviews
Nutrex Pure Hawaiian Spirulina
Nutrex’s Pure Hawaiian spirulina supplement is a natural powder which can be mixed with just about anything, giving you the benefits without ruining the flavour. For an easy energy and immune boost, this supplement will do the trick.

Our Other Top Spirulina Supplement Picks

Best Spirulina Supplement Reviews

Nutrex Pure Hawaiian Spirulina (👑 Top Pick)

Made on the tropical island of Hawaii, this offering from Nutrex is the best spirulina supplement in our opinion. It’s free from unwanted chemicals and somehow manages to avoid an unpleasant aftertaste.

Just about as minimalist as it gets, you’ll only be getting the very best with this spirulina supplement. Just a 3g serving will equate to as many as 5 servings of fruits and vegetables, which makes it a great way to get the nutrition you need for the day.

In addition to this, Nutrex claims that their Hawaii-grown spirulina has 31x more antioxidants than fellow superfood blueberries, and 3,900% more beta carotene than carrots.

If that isn’t enough to sway you, this product is highly rated by people who take it on a regular basis, and is recommended by Amazon as a result of its quality and popularity.

You can get this spirulina supplement as a tasteless powder which you can add into your favourite dishes or protein shakes, or as tablets for convenience.


  • 16oz Powder (tablets also available)
  • 31x more antioxidants than blueberries
  • Gluten/Soy-free
  • Suitable for Vegans
  • No fillers, preservatives, or dyes
  • Grown in Hawaii

BN Labs Spirulina Powder

BN Labs Spirulina Powder is a bulk powder supplement that comes in a few different sizes, and features nothing but spirulina.

This 100% raw organic spirulina powder can be bought as a large 1kg tub, a smaller 7.93oz packet, or a container of 30 pills. This gives you the flexibility to invest in whichever option makes the most sense for you.

The powder from BN Labs contains over 70% protein in each serving, which makes this a powerful protein supplement and can help you with rapid muscle recovery and greater physical endurance.

If you were wondering about the process, BN Labs ensures everything is done by the book. Not only is their supplement USDA-certified, but it is non-irradiated, with no added chemicals or artificial ingredients.


  • 100% raw organic spirulina
  • 1kg tub in powdered form (other options available)
  • USDA-certified
  • Suitable for any lifestyle
BN Labs Spirulina Powder
711 Reviews
BN Labs Spirulina Powder
This generously sized helping of spirulina is ideal for those who are always on the go and need a little energy boost to help them sustain their drive. It’s also a great product for anyone who regularly exercises or works out, due to its high protein content and how easy it is to add to protein shakes or smoothies.

Athletic Greens

While you might wonder why a general greens supplement is on this list, it’s because organic spirulina is one of the main ingredients used in this nutrient-rich supplement powder.

There aren’t many benefits you won’t get from taking Athletic Greens. But just to name a few, you’ll see improvements in your energy level, immune system, recovery time, gut health, digestion, and it even helps you age healthily.

If you’re looking for an extremely well-rounded supplement that takes the main benefits of spirulina and compliments them with a whole host of other superfood benefits, then Athletic Greens is what you need in your life.

It’s all well and good to take spirulina and other greens and pack them all into one powder, but does it actually work?

If you take the word of pro triathletes, health experts, and performance psychologists seriously, then yes it does. Not only do Athletic Greens have the vocal support of many high-profile experts in their fields, but they are also highly rated by their many happy customers.

If you can’t get all the nutrients you need for the day, due to travel for example, then Athletic Greens can provide you everything your body needs to thrive in a single serving.


  • 75 vitamins, minerals, and whole food ingredients (including spirulina)
  • 12.7oz powder
  • Suitable for any lifestyle
  • Manufactured in a GMP (Good Manufacturing Practices) certified facility
  • No harmful chemicals or artificial ingredients
Athletic Greens
3,058 Reviews
Athletic Greens
Athletic Greens is the gold-standard of superfood supplements. While it might be a little pricey if for a spirulina supplement, it’s a very complete product with everything you need to live an optimally healthy life.

NOW Spirulina Tablets (💊 Best Spirulina Tablets)

NOW provides the best spirulina tablets in our view, which are densely packed with 1000mg of the nutrition you need. They also give you a convenient way to supplement with the superfood.

The organic double-strength tablets on offer here have twice as much spirulina in them than a lot of other supplements. That means you’ll get double the vitamins, and double the benefits.

NOW has ensured that their spirulina supplement is suitable for every lifestyle, as well as being USDA organic, non-GMO, and sourcing their ingredients from genuine whole foods.

NOW is also a family owned and operated company, which uses sustainable practises, which lets you know you’re investing in an environmentally-friendly product.


  • 1000mg tablets (double-strength)
  • Organic and non-GMO
  • Suitable for all lifestyles
NOW Spirulina Tablets
5,815 Reviews
NOW Spirulina Tablets
If you’re looking to take on your allergy symptoms, or reduce symptoms of fatigue quickly, then you’ll love these double-strength tablets from NOW.

Healthy Origins Spirulina Tablets (💸 Best on a Budget)

These tablets from Healthy Origins provide you all the spirulina you need even if you’re on a budget.

There are 3 different quantities on offer. You can buy a pack of 720 tablets, 360, or 180.

If you’re strapped for cash you might opt for the 180-tablet pack, however, if you’re looking to save money in the long-term it might be worth investing in the 720-tablet pack.

If you’ve bought into the benefits of spirulina, and don’t mind spending a little more now to save money later on, then the large economy size pack could be just what you need.

Each tablet contains 500mg of organic spirulina and nothing else.


  •  Available in 3 sizes
  •  500mg tablets
  •  Organic
  •  Non-GMO
Healthy Origins Spirulina Tablets
550 Reviews
Healthy Origins Spirulina Tablets
If you want to invest in a spirulina supplement but you don’t have a big budget, then this is the one for you. Simply buy the smaller pack if you have less money to spend, or go for the bigger pack if you want it to last longer.

Benefits of Spirulina

Spirulina has dozens of health benefits which makes it a great supplement for a healthy lifestyle. We’re going to take a look at some of the most exciting benefits in more detail.

1. A Natural Multivitamin

First and foremost, spirulina supplements are incredibly rich in nutrients.

It’s so nutrient-dense in fact, that NASA once suggested that it be grown in space as an efficient source of food for astronauts.

What exactly can you expect to find inside your spirulina supplement?

Well, in a serving of 7g, which is 1 tablespoons’ worth, you’ll be getting:

  • 4g of Protein
  • 1g of Fat (omega-6 and omega-3 fatty acids)
  • Vitamins B1, B2, and B3 (thiamine, riboflavin, and niacin respectively)
  • Copper (21% of the RDA)
  • Iron (11% of the RDA)

Not bad, right?

There’s also a considerable amount of magnesium, manganese, potassium, and a healthy dose of other nutrients packed within this small serving.

Due to just how nutritionally-dense spirulina is, some have claimed that is the single most nutritious food we know of. 

That’s a huge claim, and if true, begs the question as to why you wouldn’t want to supplement with this real superfood?

2. Fights Fatigue

Unless you’re superhuman, you probably get tired from time to time. Fatigued, even. If you’re constantly on the move juggling your work, social life, and a bunch of other things, you’re bound to hit a brick wall every now and again.

Caffeine will help get you over the wall, but you shouldn’t rely on it. Too much caffeine can create dependency, and you might end up desensitising yourself to its stimulating effect.

That’s why a healthy alternative like spirulina can help give you the energy boost you need just when you need it. Unlike stimulants this supplement can reduce symptoms of fatigue without the harsh comedown.

Spirulina has been shown to increase the time it takes people to reach burnout. As a result of this increased endurance, you can sustain a higher level of output over a longer period of time. This is especially useful for athletes and anyone interested in fitness.

3. Contains Antioxidants

We all know about the antioxidants that you can get from eating handfuls of blueberries and other fruits, but spirulina takes it to another level.

Spirulina is an excellent antioxidant, which works with the body to reduce oxidative damage that can fuel chronic pain and inflammation.

If you suffer from chronic pain in any sense, it might be worth taking a look into how you could stand to gain from taking a regular spirulina supplement. It could provide some small measure of comfort, which would surely make it worthwhile.

4. Alleviates Allergy Symptoms

Here’s one for all of you who suffer with seasonal allergies out there. I know I do. There’s nothing worse than several months of irritation just when the weather’s getting better, and antihistamines can prove costly depending on how long you have symptoms for.

So with that in mind, wouldn’t it be nice to invest in a supplement with a natural antihistamine in it?

Taking a spirulina supplement regularly which would not only give you all the benefits listed here, but also potentially alleviate some of your allergy symptoms too.

Studies have shown that supplementing with as little as 2g a day can make a big difference, and provide relief from those irritating allergic rhinitis symptoms you have to deal with every year.

5. Helps Protect Against Cancer

While it might not be able to prevent it, spirulina has anti-cancer properties which may help your body fight the crippling disease more effectively.

It can’t hurt to take this supplement as a precaution though, since even the smallest chance of giving your body a greater chance of beating cancer should make it worthwhile.

Related: Best Green Tea Extract

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Frequently Asked Questions About Spirulina

What is the best spirulina to buy?

We believe that Nutrex’s Pure Hawaiian Spirulina is the best supplement to buy.


Mainly because it works well. It will boost your energy levels and work to reduce inflammation in the body with its high number of antioxidants.

As a nice bonus, it is grown organically in Hawaii, and the powder is good to add into your food and drinks since it doesn’t have an awful flavour.

Is it safe to take spirulina everyday?

Despite the idea that once circulated claiming spirulina was in some way toxic (which turned out to be false), it is very much safe to take everyday in supplement form.

In fact, it goes beyond being just safe. The Dietary Supplements Information Expert Committee gave spirulina a class A rating back in 2011.

That being said, to ensure that the spirulina supplement you are taking is 100% safe and free from harmful chemicals, vet the manufacturer and check to see if what goes into the product is natural.

What should I look for in spirulina?

There are a few things you can look out for in a spirulina supplement to make sure it’s of a high quality.

First, check that the spirulina content of the supplement is at least 98%, or if it’s in powder from 100%. There should also be no preservatives or artificial ingredients present on the label.

When you have spirulina powder in front of you, you can check its colour for quality. You can tell that it’s good if it has a dark green matte shade to it, anything shiny is a bad sign.

Lastly, to determine whether the spirulina you’ve bought is good or not, you should smell it. While it has its own naturally occuring smell, spirulina shouldn’t smell offensive to the nose. If it does have a potent odour, then you know that it isn’t the highest quality.

What are the benefits of spirulina?

The benefits of spirulina are many, it is claimed to be one of the most nutritious foods available. 

By taking a regular supplement of this superfood, you will be taking on board a lot of health benefits that can be hard to find in such abundance with any other food.

They include, but aren’t limited to:

  •   Improved energy levels
  •   Reduced inflammation
  •   High Nutrient-intake
  •   Alleviated allergic rhinitis symptoms
  •   Cancer-fighting properties

A Final Word on the Best Spirulina Supplements

Taking spirulina as a powder or table can be an excellent way to supplement a healthy life.

Offering a wide range of benefits, and containing an extremely high level of nutrients, spirulina is one superfood that you shouldn’t live without.

Related: Best Yerba Mate

This post may contain affiliate links. Please read our disclosure for more info.
Article by:

Energetic Lifestyle Team

Our detailed review has been contributed to by multiple members of the Energetic Lifestyle Review Team to ensure the best research and highest standard of quality. Have a good or a bad experience with one of the products? Please let us know, we love the feedback!

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