Want to supercharge your health, but unsure of where to start? With so many options out there, it can be hard to understand the benefits and potential side effects of spirulina powders or pill supplements.

Most people take whatever they can find without fully understanding the overall wellness implications, only to realize that their supplement isn't doing enough – or worse, could be causing more harm than good.

Don't settle for anything less than the best. Look no further than our choices of the best spirulina powder! We have done all the research so you don't have to, giving you ultimate peace of mind that you're getting a safe yet effective health supplement with optimal potency and quality.

How We Select The Best

When we're looking for the best spirulina powder out there, we sift through a few things. First up, we want it to be organic and sustainably sourced, so there are no pesky chemicals or environmental nasties.

Next, we check out the nutrient content - it should be packed with protein, vitamins, and minerals. The form of the powder matters too - some types are easier to blend into smoothies and shakes. Lastly, we want to hear what other customers have to say and stick with brands that have a good reputation.

With all these things in mind, we'll help you find the perfect spirulina powder that'll boost your energy and immunity, support your overall health, and give you some top-notch results.

Get your favorite choice of the best spirulina powders today!

Best Energy Booster

Nutrex Hawaii, Pure Hawaiian Spirulina Powder

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What's the Big Deal?

Nutrex Hawaii's Pure Hawaiian Spirulina Powder is made from natural ingredients grown on the farms of Nutrex Hawaii and packed with nutrients to support overall health. It contains all the vitamins, amino acids, antioxidants, carotenoids, and phycocyanin your body needs to feel amazing and jumpstart any healthy routine.

Plus, it helps maintain optimal levels of cholesterol and lipid profiles throughout your system so you know you'll be glowing from the inside out. Get your hands on Nutrex Hawaii's Pure Hawaiian Spirulina Powder today!

What You Should Know

With 454 grams of spirulina powder included in every bottle, you'll get a total of 151 servings per container. Each serving contains just 10 calories, less than one gram of carbohydrates, and 2 grams of protein, along with 3 mg of Iron, 60 mg of sodium, and 3 grams of spirulina.

This supplement is perfect for vegans, vegetarians, and anyone looking for a soy-free, gluten-free, GMO-free, lactose-free, solvent-free, herbicide-free, and pesticide-free supplement. It's also made in the USA, which is a bonus for anyone looking for quality products.

Best Organic

KOS USDA Organic Spirulina Powder

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What's the Big Deal?

Get the health boost you need with KOS USDA Organic Spirulina Powder the best organic spirulina powder on our list! This all-natural, vegan-friendly supplement is jam-packed with vitamins, proteins, minerals, amino acids, calcium, iron, magnesium, Vitamin B, potassium and niacin – everything your body needs to feel energized and refreshed.

This superfood powder is perfect for anyone looking to take their health to the next level. Chock full of chlorophyll for keeping a healthy gut and plenty of antioxidants that help reduce oxidative stress and boost immunity. Additionally, it helps improve digestion and revs up your muscles for when you need peak performance during workouts.

What You Should Know

KOS USDA Organic Spirulina Powder comes with 381 grams of powder in each bottle, you'll get around 109 servings with just one scoop (3.5 grams) per serving. This supplement is low in calories and fat and has no cholesterol.

Each serving has 20mg sodium, 1g carbohydrates, 2g protein, plus 11mg calcium, 2mg iron, and 46mg potassium. With GMP certification and third-party testing for quality, purity, and potency, this supplement is manufactured to the highest standards.

Best Green Algae Formula

Nutricost Organic Spirulina Powder

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What's the Big Deal?

Introducing Nutricost Organic Spirulina Powder from the trusted supplement provider Nutricost. This wonder green algae is here to nourish your body with all the nutrition it needs for optimal health and fitness! It's packed with protein, vitamin B12, iron, magnesium and fatty acids - along with other amazing nutrients!

Not only that, but it also helps boost your immune system, improve cardiovascular health (which is especially useful for those looking to lose weight!) and manage cholesterol levels. What’s more, this high-quality organic spirulina powder from Nutricost offers to be one of the best on the market at an affordable price.

What You Should Know

Nutricost's Organic Spirulina Powder packs a hefty 907 grams of top-grade whole-plant organic spirulina powder in each package, with each serving containing one gram.

This dietary supplement is manufactured in a GMP-compliant and FDA-registered facility, free from gluten and GMOs. And if you're worried about purity and quality, fret no more! Each batch undergoes rigorous testing by a third party.

Best for Blood Pressure

NOW Supplements Spirulina Powder

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What's the Big Deal?

NOW Supplements Spirulina Powder is an organic nutrient-rich powder that provides your body with the essential nutrients it needs for optimal health and wellness. Take control of your health with spirulina powder which can help regulate blood pressure, improve heart health, metabolism, immunity, and gut health.

Stop relying on processed snacks and drinks for a false sense of energy -- incorporate NOW foods organic spirulina powder into your diet for long-term vitality and well-being. Don’t wait until tomorrow; invest in yourself today with NOW Supplements Spirulina Powder!

What You Should Know

With 454 grams of Spirulina Powder per container, you'll get 38 servings - each one brimming with essential vitamins and minerals. Not only is this supplement Kosher, Halal, vegan, and free from GMOs, sugar, and soy, it's also GMP-assured for quality.

With 15 calories, 35 mg of sodium, 1 gram of carbohydrates, 2 grams of protein, 5 mg of calcium, 1.6 mg of Iron, and 56 mg of potassium per serving, you'll be doing your body a favor with each and every dose of NOW Supplements' Spirulina Powder!

Best for Digestion

Micro Ingredients Organic Spirulina Tablet

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What's the Big Deal?

Micro Ingredients Organic Spirulina Tablets are easy-to-swallow tablets that provide essential vitamins, minerals, and antioxidants that will have you feeling full of energy in no time.

Made with 100% pure spirulina and natural ingredients, these tablets are a great way to get the extra nutrients you need without compromising on taste or flavor. Plus, vitamins to support your energy levels powerfully and promote good digestive health – all without any added preservatives or other artificial ingredients.

What You Should Know

Micro Ingredients Organic Spirulina Tablet contain 720 tablets per pack and 6 tablets per serving, you'll enjoy 120 servings of this powerful supplement. Not only is it low in calories (just 10 per serving), but each serving also contains 2 grams of protein, 2250 mcg of Vitamin A, 40 mcg of Vitamin K, and 7 mcg of Vitamin B12.

Plus, you'll get important minerals like Iron, Magnesium, and Manganese. But that's not all - it's also packed with 3 grams of organic spirulina, as well as phycocyanin, Gamma-Linolenic Acid, chlorophyll A, carotenoids, and zeaxanthin. And with no fillers, GMOs, gluten, soy, additives, preservatives, artificial colors or flavors.

Benefits, Dosage, and Side Effects

Here's the benefits, dosage and side effects of spirulina powder.


Looking for a superfood that offers a ton of health benefits? Check out the best spirulina supplements! This bad boy is loaded with nutrients and proteins that our body needs, including all the essential amino acids. Plus, it's got some serious antioxidant and anti-inflammatory properties, helping to reduce inflammation and oxidative stress.

That means a lower risk of diseases like cancer. And if that wasn't enough, spirulina also helps regulate blood pressure, protecting us against stroke, heart attack, and kidney diseases. It can even help with allergic rhinitis symptoms! Oh, and did we mention that it can control cholesterol levels too? Talk about a powerhouse!


Manufacturers have different formulas for their supplements, leading to varying recommended dosage limits. Fortunately, they provide this information on the label, which is based on consultations with healthcare professionals.

For high quality spirulina supplement powder, a safe dosage limit is generally 10 grams, but it's best to confirm with your healthcare provider for the specific brand you're using to get better benefits. It's advisable to begin with a low dose and gradually increase it over time if there are no allergic reactions or side effects.

Side Effects

Spirulina supplement is safe to use, but people's bodies react differently. Some people get allergic reactions with the use of spirulina supplements. These can be rashes or swelling on different body parts.

Some people experience headaches, muscle pain, trouble sleeping, and increased sweating with its usage. One of the severe reported side effects of this supplement is throat swelling. If you experience any such reactions, stop using the supplement and talk to a healthcare provider.

Spirulina Powder FAQs

This section will answer your most common questions regarding spirulina supplement powder.

What happens if you take spirulina every day?

Your body gets all the essential nutrients if you take daily spirulina supplements. Furthermore, your immunity, digestion, mental clarity, and energy level improves.

What to look for when buying spirulina?

Always choose a reputable brand, like GNC superfoods spirulina that contains gelatin capsules of spirulina, or any other that offers organic and certified spirulina supplements when you look for options to buy.

Who should avoid spirulina?

People with phenylketonuria, a metabolic condition in which they cannot metabolize the amino acid phenylalanine, should avoid taking spirulina as it is rich in amino acids.

What is the best time to take spirulina powder?

Spirulina supplement powder is beneficial for you whenever you feel low energy. You can take it whenever you want, before meals, with meals, after meals, before or after the workout.

Which is better blue or green spirulina?

Green spirulina has a high nutritional value and has more benefits. In contrast, blue spirulina has high antioxidant properties. You can choose any of them according to your body's requirements.

What is the best way to take spirulina powder?

The best way to take spirulina supplement powder is to mix it with water or juice or add it to your favorite smoothies.

What are the negative effects of spirulina?

Some side effects of spirulina supplements are skin rash, insomnia, headache, and nausea.

When should I stop taking spirulina?

You should stop taking spirulina supplements if you experience allergic reactions, dark urine, pale skin, yellow eyes, abdominal pain, or continuous vomiting.

Does spirulina make you look younger?

Spirulina is rich in essential nutrients, vitamins, and amino acids that decrease inflammation and encourage cell turnover, which causes a youthful complexion and makes you look younger.

Why is Hawaiian spirulina better?

The Hawaiian spirulina is cultivated in a bio-secure zone and is certified free from industrial pollutants, pesticides, and herbicides. Also, Hawaiian spirulina is rich in vitamins, minerals, and oxidants.

Final Word

Quality matters and it's important to do your due diligence to make sure the product you're getting is of the highest caliber so that you experience all the health benefits it offers. We've done some of the hard work for you – researching and testing out varieties of the best spirulina supplement – to bring you what we believe are some of the best products on the market so that you don't have to worry about settling for something substandard.

With our top picks, you're bound to find a spirulina powder supplement that can take care of your health needs and improve your wellbeing. Don’t wait another minute – get ready to give those extra energy boosters and vitamin supplements a run for their money as you supercharge your health today!