5 Best Spirulina Powder Supplements (Buying Guide)

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Reviews of five of the best spirulina powder supplements, based on manufacturing process and location, price, brand reputation, and more.

Spirulina is one of the most popular and perhaps most hyped-up health foods in recent times. Some say it’s a fad that will slowly disappear, while others say it’s the greatest thing since sliced bread.

All things considered, there is no denying that spirulina has a rich nutritional profile, but should you take supplements?

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

Top 5 Spirulina Powder Supplements:

Spirulina Supplement Price
1 Maju Superfoods Spirulina Powder Price
2 Nutrex Hawaii Pure Hawaiian Spirulina Powder Price
3 Micro Ingredients Organic Spirulina Powder Price
4 Natural Elements Organic Spirulina Powder Price
5 Zhou Nutrition Spirulina Powder Price

Top 5 Spirulina Powder Supplements

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

1. Maju Superfoods Spirulina Powder

Maju Superfoods Spirulina Powder

Maju’s non-GMO spirulina powder is proudly grown in California and is 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 no contamination. Each batch then goes through a final round of testing to ensure no heavy metals or contaminants are 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 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 microalgae 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.

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3. 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 their powder supplements are guaranteed USDA-certified organic, non-GMO, and free from additives, preservatives, or fillers.

This particular Micro Ingredients spirulina supplement provides you with 1 pound of spirulina powder packaged in a re-sealable bag. The powder form allows for higher concentration and quicker absorption, plus it’s gentler on your stomach. It can be easily added to your shake or smoothie, and the included scoop ensures accurate measurement each time.

The brand promotes this spirulina powder supplement as a fun, versatile way to boost your nutrient intake.

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4. Natural Elements Organic Spirulina Powder

Natural Elements Organic Spirulina Powder

Manufactured in the USA, this premium spirulina powder supplement product offered by Natural Elements is USDA-certified organic.

What sets this brand apart is its commitment to quality. It offers top-tier, organic spirulina that’s pesticide and herbicide-free, microcystin-free, gluten-free, non-GMO, and 100% vegetarian and vegan. The spirulina is sourced from specific locations in California and Hawaii, identified for its superior quality spirulina.

This product comes in a small pot with 168 grams of spirulina powder which equates to approximately 48 servings. They also offer a satisfaction guarantee; if you don’t see a difference within the first 30 days of daily use, you’ll get your money back. It’s a clear testament to their confidence in product quality and customer service.

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5. 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 a premium-quality product, sourced from a remote spirulina farm in Southeastern California. Thanks to clean air and mineral-rich water, the spirulina produced is of exceptional quality.

At Zhou, they adhere to GMP (good manufacturing practices) and use only the best ingredients. All products are tested at their lab in Utah, ensuring you’re getting the highest quality product.

This particular spirulina powder boasts non-GMO, non-irradiated, gluten-free, pesticide and herbicide-free qualities. It’s allergen-free, sustainably grown, and holds certifications for being Kosher, Halal, and 100% vegetarian.

The product is sold in a pot of 6 ounces (170g) of spirulina powder, giving you approximately 48 teaspoons, offering the highest concentration of protein per gram compared to any plant, herb, or animal.

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What is Spirulina?

Spirulina is an exotic word for blue-green algae that is suitable for human consumption. 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 only to consume spirulina that has been grown in clean, non-contaminated waters. The above-listed supplements are from reputable brands that make sure their products are clean and thoroughly tested.

How do I consume this edible blue-green algae? Spirulina powder is one of my favorite smoothie add ins because blending is an easy and effective way to take advantage of the nutritional benefits.

Benefits of Spirulina

Why should you consider adding spirulina to your diet? If you take a closer look at its nutritional profile below, it becomes apparent that spirulina is perhaps one of the most nutrient-dense foods in the world. As a result, its nutritional benefits are plentiful.

With 58g protein per 100g, dried spirulina is one of the most popular protein sources 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 supplements

In addition, dried spirulina is an excellent source of various B vitamins, particularly vitamins B1 (thiamin) and B2 (riboflavin).

While each B vitamin has its own unique benefits and functions, in general, the B vitamins 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 the list of best magnesium-rich foods.

Nutritional Profile of 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)
Energy 290 kcal
Protein 58 g
Fat 8 g
Carbohydrates 24 g
Calcium 120 mg (12% DV)
Iron 28.5 mg (219% DV)
Magnesium 195 mg (55% DV)
Manganese 1.9 mg (90% DV)
Phosphorus 118 mg (17% DV)
Potassium 1363 mg (29% DV)
Sodium 1048 mg (70% DV)
Zinc 2 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 B6 0.367 mg (28% DV)
Vitamin B9 (Folate) 94 µg (24%)
Vitamin C 10.1 mg (12%)
Vitamin E 5 mg (33%)
Vitamin K 25.5 µg (24%)
Sources: USDA, Wikipedia

Spirulina powder supplement buying guide


Published: September 15, 2017
Updated: July 2, 2023


Donna Harrison

My name is Donna Harrison, and I created this blog because I am passionate about discovering new foods and learning everything about them. I am also a bit of a smoothie fanatic, and I try to document all my favorite smoothies and other recipes here on Healthy Food Tribe, in addition to recommendations and reviews of my favorite kitchen tools.

  1. 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 comment on 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. I think you could easily lower that to one spoon per day, or one every other day.

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