Best Spirulina Supplements for Immune Support of 2025

Elisa Drew Avatar
Elisa Drew
Last Updated: Jan 9, 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Spirulina supplements are a popular choice for those seeking immune support. Spirulina is a type of blue-green algae that is rich in nutrients such as protein, vitamins, and minerals. It is also known for its antioxidant properties, which can help to protect the body from harmful free radicals. Many people take spirulina supplements to help support their immune system, as it may help to boost the production of white blood cells and improve overall immune function. Spirulina supplements are available in various forms, including capsules, tablets, and powders, making it easy to incorporate into one's daily routine.

At a Glance: Our Top Picks

N1N LHC+ Immune Support Supplement Cover #TOP 1
N1N LHC+ Immune Support Supplement
ftb score rating icon 9.8
Nutrex Hawaii Spirulina Tablets Cover #TOP 2
Nutrex Hawaii Spirulina Tablets
ftb score rating icon 9.7
Kate Naturals Organic Spirulina Powder Cover #TOP 3
Kate Naturals Organic Spirulina Powder
ftb score rating icon 9.5

Top 10 Spirulina Supplements for Immune Support

#TOP 1

N1N LHC+ Immune Support Supplement

N1N LHC+ Immune Support Supplement Cover
N1N LHC+ 15-in-1 Immune Support Supplement with Spirulina, Turmeric, Ginseng, Guarana, Vitamin D and Vitamin C for Immunity, Energy and Long-Haul Relief, 60 Veg Caps, Bottle Color May Vary

N1N Immune Support offers a powerful blend of 15 nutrients designed to enhance your immune system and overall health. With ingredients like Ginseng and Guarana, this supplement boosts your energy and cognitive function, helping you maintain vitality year-round. The nutrient-rich superfood mix, including Wheatgrass and Spirulina, provides essential proteins and amino acids that are vital for wellness. Additionally, the antioxidant-rich formula protects your body from harmful free radicals, promoting long-lasting health. This supplement is an excellent choice for anyone looking to strengthen their immune defense naturally.

What We Like
Natural ingredients
Energy boost
Antioxidant-rich
Supports overall health

Nutrex Hawaii Spirulina Tablets

140015
Green
400 Count
Nutrex Hawaii Spirulina Tablets Cover
Nutrex Hawaii, Pure Hawaiian Spirulina 500 mg, Vegan, Supports Immune System, Heart, Cells and Energy, 400 Tablets

Get your daily dose of one of nature's original superfoods with Nutrex Hawaii Pure Hawaiian Spirulina Tablets. Grown naturally on a sustainable farm in Hawaii, each tablet is packed with essential nutrients for overall health. This spirulina supplement supports healthy aging by boosting the immune system, providing nourishment for a healthy and active lifestyle, and supporting normal cholesterol and lipid profiles. It's an excellent source of vitamins A, K1, K2, B12, iron, amino acids, carotenoids, antioxidants, and phycocyanin. Plus, it's vegetarian, vegan, and free of GMOs, gluten, lactose, soy, pesticides, herbicides, and solvents. Take 6 tablets daily with or between meals and refrigerate after opening.

What We Like
Packed with essential nutrients for overall health
Supports healthy aging by boosting the immune system
Excellent source of vitamins, iron, amino acids, and antioxidants
Vegetarian, vegan, and free of GMOs, gluten, lactose, soy, pesticides, herbicides, and solvents
Grown naturally on a sustainable farm in Hawaii
#TOP 3

Kate Naturals Organic Spirulina Powder

Kate Naturals Organic Spirulina Powder Cover
Kate Naturals Organic Spirulina Powder for Immune Support and Antioxidants. Nutrient Dense Superfood Supplement (2 lb, USDA Certified, Non-GMO, Gluten- Free)

Boost your daily smoothie or post-workout shake with Kate Naturals Spirulina Powder. This nutrient-dense and protein-packed supplement is a truly 'super' superfood. Packed with essential vitamins, antioxidants, and iron, it provides the perfect support for your immune system. With its anti-inflammatory properties, this organic spirulina powder is a powerful fighter against chronic diseases. The conveniently packaged powder is easy to use - simply open the resealable container, scoop out the desired amount, and seal it back for freshness. Trust in the quality of Kate Naturals and enjoy the benefits of this tasty and nutrient-rich supplement.

What We Like
Nutrient-dense
Protein-packed
Anti-inflammatory properties

Nutrex Hawaii Pure Hawaiian Spirulina Powder

Nutrex
140003
Green
Nutrex Hawaii Pure Hawaiian Spirulina Powder Cover
Nutrex Hawaii, Pure Hawaiian Spirulina Powder, Vegan, Supports Immune System, Heart, Cells and Energy, 16 Ounce

Nutrex Hawaii Pure Hawaiian Spirulina Powder is a vegan supplement that supports the immune system, heart, cells, and energy. It is an excellent source of vitamins A, K1, K2, B12, iron, amino acids, carotenoids, antioxidants, and phycocyanin. Customers have praised its taste and quality, and the company provides lab results to ensure safety.

What We Like
Vegan and free of GMOs, gluten, lactose, soy, pesticides, herbicides, and solvents
Grown on a sustainable Hawaiian farm with natural sunlight and lava-filtered water
Excellent source of vitamins, minerals, and antioxidants
Company provides lab results to ensure safety
Highly praised taste and quality

Vimergy Natural Spirulina Capsules

Vimergy Natural Spirulina Capsules Cover
Vimergy Spirulina Capsules – Concentrated Plant Protein Supports Immune Health & Cardiovascular Function – Vegan, Kosher, Gluten-Free – 180 Capsules

Vimergy Natural Spirulina Capsules are a nutrient-dense, plant-based supplement containing 3g of raw spirulina powder. With phytonutrients and antioxidants, it supports immune and cardiovascular health while providing beta-carotene, vitamins, minerals, essential fatty acids & amino acids. Certified Kosher and Non-GMO, the capsules are free from preservatives, dyes, and pesticides, and are vegan, paleo, and gluten-free. Perfect for daily use, Vimergy Spirulina Powder is high in plant proteins, containing more than 50% protein.

What We Like
Nutrient-dense
Supports immune and cardiovascular health
Free from preservatives, dyes, and pesticides
Vegan, paleo, and gluten-free
High in plant proteins

Nature's Way Spirulina Micro-Algae Supplement

Nature's Way
17200
Nature's Way Spirulina Micro-Algae Supplement Cover
Nature's Way Spirulina Micro-Algae, Seasonal Immune Support*, Source of Vitamin A (Beta Carotene), 760 mg per Serving, 100 Vegan Capsules (Packaging May Vary)

Nature's Way Spirulina Micro-Algae Supplement is a high-quality, Non-GMO Project Verified, vegetarian and gluten-free supplement. It contains 760 mg of Spirulina per serving, which is a type of blue-green micro-algae that is rich in protein, making it an excellent choice for those looking to increase their protein intake. Nature's Way is committed to delivering uncompromising quality and pure botanicals to help you live healthier.

What We Like
Non-GMO Project Verified
Vegetarian and gluten-free
Contains 760 mg of Spirulina per serving
#TOP 7

Nautical Elements Spirulina Capsules 3000mg

Nautical Elements Spirulina Capsules 3000mg Cover
Spirulina Capsules 3000mg - 40 Servings Of Organic Spirulina Capsules - Rich in Protein, Antioxidants & Vitamins - 240 Organic Spirulina Powder Capsules - Supports Immune & Cardiovascular Health

Nautical Elements Spirulina Capsules are high-quality organic spirulina capsules filled with proteins, vitamins, and antioxidants. These nutrient-dense capsules are easy to digest, ensuring fast absorption of rich nutrients to support your overall wellness. Produced through eco-conscious and sustainable practices, they offer a convenient way to elevate your nutrition. Designed for everyday use, these spirulina capsules can be easily incorporated into your diet, whether by mixing them in juice or smoothies or taking them as capsules. Enjoy the benefits of organic spirulina in a convenient form, contributing to a healthier lifestyle.

What We Like
High-Quality Organic Spirulina
Nutrient-Dense & Easy to Digest
Eco-Conscious & Sustainable

Dr. Mercola Organic Spirulina Dietary Supplement

10325
Dr. Mercola Organic Spirulina Dietary Supplement Cover
Dr. Mercola Organic Spirulina Dietary Supplement, 2,000 mg per Serving, 30 Servings (120 Tablets), Supports Normal Immune and Inflammatory Responses*, Gluten Free, USDA Organic

Dr. Mercola Organic Spirulina Dietary Supplement is a high-quality source of protein, containing 30 servings (120 tablets) per bottle. Gluten-free and USDA Organic, it supports normal immune and inflammatory responses. Produced by a world-class supplier with over 40 years of experience growing spirulina, the formula is made from whole-food spirulina, providing the majority of its natural cofactor, enzymes, vitamins, and minerals. The product comes with a full 30-day money-back guarantee.

What We Like
Gluten-free and USDA Organic
Supports normal immune and inflammatory responses
High-quality source of protein
#TOP 9

Sunlit Super 50/50 Organic Chlorella Spirulina Tablets

CS-5050-SUPER-500
Sunlit Super 50/50 Organic Chlorella Spirulina Tablets Cover
Sunlit Super 50/50 Organic Chlorella Spirulina Tablets - Super Supplement for Immune Support, Gut Health, Mood & Energy - Rich in Chlorophyll, Amino Acids & Vegan Protein, 500 Superfood Tabs

Boost your immune system, improve gut health, and increase energy levels with Sunlit Chlorella Spirulina Tablets. These organic tablets are packed with antioxidants and nutrient-rich chlorophyll to protect your cells from damage and inflammation. They nourish your body, support digestion, and promote optimal health. With a perfect balance of essential nutrients, including 18 amino acids and vitamins, these tablets naturally boost energy levels and reduce fatigue. Additionally, they provide joint support by reducing inflammation and strengthening joint tissue. The tablets are easy to swallow and digest, making them convenient for daily use. Made from sun-grown micro-blue green algae sourced from Taiwan, these tablets are USDA certified organic, vegan, and cruelty-free. Enjoy the benefits of these high-quality tablets that are free from additives, fillers, and artificial colors.

What We Like
Supports Digestive Health & Immune System
Nourishes Your Body For Optimal Health
Boosts Energy Levels Naturally

Organic Spirulina Supplement

4332489013
Organic Spirulina Supplement Cover
Micro Ingredients Organic Spirulina Supplement, 3000MG Per Serving, 720 Tablets (4 Month Supply), No Filler & Non-GMO, Rich in Vegan Protein, Vitamins & Prebiotics, Premium Spirulina Pills

The Organic Spirulina Supplement from Micro Ingredients is a premium, 100% USDA organic spirulina tablet made from arthrospira platensis powder. With 3000mg per serving and 720 counts per bottle, this supplement is a 4-month supply of green algae superfood that is vegan-friendly, filler-free, and irradiation-free. It is loaded with vegan protein, fiber, amino acids, fatty acids, immune vitamins, minerals, flavonoids, phytonutrients, and antioxidants. This supplement powerfully supports energy, colon health, digestive function, and immune system. It is also 3rd party lab tested for purity and safety, and made in the USA.

What We Like
100% USDA organic spirulina tablet made from arthrospira platensis powder
3000mg per serving and 720 counts per bottle, a 4-month supply
Loaded with vegan protein, fiber, amino acids, fatty acids, immune vitamins, minerals, flavonoids, phytonutrients, and antioxidants
Powerfully supports energy, colon health, digestive function, and immune system
3rd party lab tested for purity and safety, and made in the USA
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Does spirulina help fight viruses?

Spirulina-based nutraceuticals have been reported to boost innate and adaptive immunity [18], [19], [20], and possess antiviral properties against different enveloped viral infections, such as human immunodeficiency virus (HIV) and herpes simplex virus (HSV) [21], [22], [23], [24].

2. Is spirulina good for autoimmune disease?

The Journal of Cellular and Molecular Immunology suggests that spirulina supplements can improve anemia and improve immune function, but while beneficial to healthy adults it is a point of caution for those suffering from autoimmune disorders.

3. Why you should not take spirulina?

Spirulina may be contaminated with harmful compounds, thin your blood, and worsen autoimmune conditions. Some people may be allergic, and those with PKU should avoid it.

4. What happens if you take spirulina every day?

For example, it can lower total cholesterol, “bad” LDL cholesterol and triglycerides, while raising “good” HDL cholesterol. In a study in 25 people with type 2 diabetes, 2 grams of spirulina per day significantly improved these markers ( 9 ).

Editor's Notes

During our spirulina supplement for immune support research, we found 24 spirulina supplement for immune support products and shortlisted 10 quality products. We collected and analyzed 134,104 customer reviews through our big data system to write the spirulina supplements for immune support list. We found that most customers choose spirulina supplements for immune support with an average price of $19.72.

The spirulina supplements for immune support are available for purchase. We have researched hundreds of brands and picked the top brands of spirulina supplements for immune support, including Number One Nutrition, Nutrex Hawaii, Kate Naturals, Nutrex, Vimergy. The seller of top 1 product has received honest feedback from 450 consumers with an average rating of 4.9.

Written by
Elisa Drew Avatar

Elisa Drew is a really professional copywriter specializing in baby products with five years of experience working as a pediatrician once. She has published a series of baby books purchased by over thirty thousand people in the United States.