Best Spirulina Powder Supplements (And Why They Are Worth Your Money)

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Last updated: June 27, 2020

One of the most popular and hyped up health foods from recent years is spirulina. Some say it’s a fad that will just disappear as time goes by, others say it’s the greatest thing since sliced bread.

I usually don’t get too excited about just one food in particular. Rather, I prefer to focus on maintaining a healthy balanced diet, eating a wide variety of different foods that all offer their own unique sets of nutrients and health benefits.

But there’s no denying that spirulina has a very rich nutritional profile. So much so that I use spirulina powder as a regular ingredient for my green smoothies. It’s just very convenient for me to add a teaspoon of spirulina powder each time I prepare a smoothie and enjoy its health benefits that way.

Let’s have a closer look at what spirulina actually is, and what some of the best spirulina powder supplements are.

What is Spirulina?

Spirulina is an exotic word for blue-green algae that is suitable for consumption by humans.

Typically found in tropical waters with high-salt content, spirulina has been cultivated worldwide for many years due to its strong nutritional profile and health benefits.

Spirulina can be consumed either as a whole food or as a dietary supplement, usually in the form of powder or tablets. As a food, spirulina has quite a strong seaweed flavor which is why some prefer to consume it in powder form.

It’s essential to only consume spirulina that has been grown in clean, non-contaminated waters. The below listed supplements are from reputable brands that make sure their products are clean and thoroughly tested.

Health Benefits of Spirulina

So why should you consider adding spirulina to your diet? If you have a closer look at its nutritional profile below, it becomes immediately clear that spirulina is perhaps one of the most nutrient dense foods in the world. As a result, its health benefits are numerous.

With 58g protein per 100g, dried spirulina is one of the most popular sources of protein for vegans. Spirulina is also extremely rich in iron, an essential mineral that assists in various functions in our bodies, such as creating red blood cells.

Spirulina powder and tablets

In addition, dried spirulina is a great source of various B vitamins, in particular vitamins B1 (thiamin) and B2 (riboflavin).

While each B vitamin has its own unique benefits and responsibilities, in general the B vitamin family helps to produce necessary energy from the food that we eat and supports normal nervous system function. B vitamins also play a crucial role in forming red blood cells.

And with a staggering 195mg of magnesium content (55% DV), dried spirulina is a good candidate to be added to my list of favorite magnesium rich foods.

Nutritional Profile Spirulina

The table below shows the rich nutritional profile in numbers. Most notably, spirulina is an excellent source of protein, iron, vitamin K, vitamin E and B vitamins.

Spirulina Nutritional Profile (dried – 100 g)
Energy290 kcal
Protein58 g
Fat8 g
Carbohydrates24 g
Calcium120 mg (12% DV)
Iron28.5 mg (219% DV)
Magnesium195 mg (55% DV)
Manganese1.9 mg (90% DV)
Phosphorus118 mg (17% DV)
Potassium1363 mg (29% DV)
Sodium1048 mg (70% DV)
Zinc2 mg (21% DV)
Vitamin B1 (Thiamine)2.38 mg (207% DV)
Vitamin B2 (Riboflavin)3.68 mg (306% DV)
Vitamin B3 (Niacin)12.82 mg (85% DV)
Vitamin B60.367 mg (28% DV)
Vitamin B9 (Folate)94 µg (24%)
Vitamin C10.1 mg (12%)
Vitamin E5 mg (33%)
Vitamin K25.5 µg (24%)
Sources: USDA, Wikipedia

6 Best Spirulina Powder Supplements

Here are 6 of the best spirulina powder supplements available on the market today, based on price, manufacturing process and location, brand trustworthiness and reviews.

1. Maju Superfoods Spirulina Powder

Maju Superfoods spirulina powder

Maju’s non-GMO spirulina powder is proudly grown in California and is absolutely free from nasties such as pesticides, herbicides and microcystins.

Grown in isolated, purified tanks and hand cultivated to remove impurities, their spirulina powder is produced with great care to ensure there is no chance of contamination. Each batch then goes through a final round of testing to make sure there are no heavy metals or contaminants present in the spirulina powder.

Another advantage of this product is that it does taste better than most other spirulina powder supplements. So if that’s an important decision factor for you, Maju Superfoods may just be a good choice.

You can purchase this quality product in a pot of 32 ounces (907g) or 8 ounces (227g). One serving (1 teaspoon) equates to around 3-4g. Maju Superfoods recommends 1 or 2 servings per day.

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2. Nutrex Hawaii Pure Hawaiian Spirulina Powder

Nutrex Hawaii Pure Hawaiian spirulina powder

Founded in 1999, Nutrex Hawaii is a leading producer of natural micro-algae supplements. They grow, cultivate and harvest their spirulina powder naturally under the warm sun of Hawaii.

All of their products are non-GMO, gluten-, soy- and lactose-free and are also free from pesticides, herbicides and preservatives.

You can purchase this popular spirulina powder supplement as a 16oz bottle or as a bag of 5 pounds. If you choose this product, it’s best to start with the small bottle and upgrade to a bag if you’re happy with your purchase. The bag is much more affordable per ounce than the bottle is.

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3. Zhou Nutrition Spirulina Powder

Zhou Nutrition spirulina powder

Zhou Nutrition is a food supplements and nutrition company based in Kansas City. Their spirulina powder supplement is manufactured in a remote farm in California located far from cities and highways where the water is mineral-rich and the air is still clean.

This non-GMO and 100% vegetarian supplement is free from pesticides, herbicides and microcystins and is sold in a pot of 6 ounces (170g) of spirulina powder which gives you approximately 48 teaspoons.

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4. Micro Ingredients Organic Spirulina Powder

Micro Ingredients organic spirulina powder

Based in California, Micro Ingredients is a premier raw and pure nutrition ingredients supplier. All of their powder supplements are guaranteed USDA certified organic, non-GMO and free from any additives, preservatives or fillers.

Micro Ingredients provides you with 1 pound of spirulina powder packaged in a re-sealable bag.

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5. Natural Elements Organic Spirulina Powder

Natural Elements organic spirulina powder

Manufactured in the USA, this spirulina powder by Natural Elements is USDA certified organic and free from pesticides, herbicides and microcystins. It is also a non-GMO and 100% vegetarian and vegan supplement.

This product comes in a small pot with 168 grams of spirulina powder which equates to approximately 48 servings.

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6. Sari Foods Pure Organic Spirulina Powder

Sari Foods pure organic spirulina powder

Founded in 2012, Sari Foods manufacturers their spirulina powder from natural soda lakes that are free from any form of pollution. The harvested spirulina is gently dried to preserve freshness without the need for chemicals, preservatives or other additives.

This supplement is packaged in a re-sealable bag with 1 pound (454g) worth of organic spirulina powder. Please take note that this product is manufactured in Korea and tested and packaged in the USA.

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Final Thoughts

Spirulina and turmeric are my two favorite supplements that I find worth buying. Spirulina has an incredibly rich nutritional profile and in powder form it’s very easy to add to smoothies.

But with any so-called “superfood”, moderation is key. There is absolutely no point in overdosing yourself with a popular food such as spirulina.

Superfoods don’t really exist, it’s simply a marketing term for popular products that happen to be nutrient dense. Your diet should consist of a wide variety of different foods that all offer their own nutrients and health benefits.

A spirulina powder supplement can be a very welcome addition to a balanced diet. Not as a treatment for health issues, but to simply get your nutrients in that your body will appreciate.


Best spirulina powder supplements

Donna Harrison

I created Healthy Food Tribe because I am passionate about discovering new foods and learning everything about them. I am also a smoothie fanatic and I document all my favorite recipes here on my blog.

  1. Spirulina is the best superfood on earth with a very high percentage of protein. Many people don’t know why spirulina is a superfood and your post is providing the answer. It will make people aware and make them use it. Thanks for sharing this post!

  2. Hi, I use spirulina (2 spoons in my miso soup) but it is from Frontier co op. I was thinking to switch to this one you talk about, but I have never heard before. What can you tell me about Frontier co op? I have been taking spirulina daily for about 5 or 6 years, I rely on this, but like you said balance is a key. Thanks for your fast response, Maggie.

    • Hi Maggie, I’ve never used spirulina powder from Frontier so I can’t help you with that. But good on you for using spirulina powder so consistently and for such a long time too! Two spoons per day sounds a bit excessive though, I think you could easily lower that to one spoon per day, or every other day. Donna.

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