Spirulina and chlorella supplements

Micro Ingredients Organic Spirulina Supplement

Spirulina and chlorella supplements are two types of algae that have gained immense popularity as dietary supplements due to their rich nutrient profiles and potential health benefits. Both are known for their high concentration of vitamins, minerals, and other beneficial compounds, making them an attractive addition to a health-conscious diet.

The top 9 Spirulina and chlorella supplements

Product name Image Rating Pros Cons Best Price More information


Micro Ingredients Organic Spirulina Supplement

Micro Ingredients Organic Spirulina Supplement
4 and a half star review
  • Contains a 50/50 blend
  • High dosage (3000mg)
  • Cracked cell wall for better absorption
  • Organic and vegan
  • Good value for money
  • Some users report larger tablets can be hard to swallow
  • No single-strain options available
Coming Soon!


Sunfood Premium Spirulina Chlorella Tablets

Sunfood Premium Spirulina Chlorella Tablets
  • Sunfood uses a 50/50 blend of broken cell wall spirulina and chlorella
  • Organic and Sustainable
  • Convenient Format, available in 2oz (228 tablets) and 4oz (456 tablets) sizes
  • Come at a slightly higher price point
  • Distinct earthy taste and smell that some people find unpleasant
  • Limited Dosage Information
Coming Soon!


Nutrex Hawaii, Pure Hawaiian Spirulina 500 mg

Nutrex Hawaii, Pure Hawaiian Spirulina 500 mg
  • Unique blend with antioxidant-rich maqui berries
  • Good for immune support and energy
  • Convenient single-serving packets
  • Certified organic and GMO-free
  • Lower spirulina content (200mg)
  • Not ideal for those seeking pure spirulina or chlorella benefits
Coming Soon!

Good Natured Premium Chlorella Spirulina

Good Natured Premium Chlorella Spirulina
  • Cracked cell wall for both chlorella and spirulina
  • Organic and vegan
  • Sunlight-grown for optimal nutrients
  • High user ratings for quality and efficacy
  • Slightly pricier than some options
  • Tablet count on the lower side (1250)
  • Limited dosage information per serving
Coming Soon!

NOW Foods Organic Spirulina 1000mg Tablets

NOW Foods Organic Spirulina 1000mg Tablets
  • Double-strength option (1000mg)
  • Very trusted brand
  • Certified organic and non-GMO
  • Good source of protein and chlorophyll
  • Pure spirulina (no chlorella)
  • Some users report slight aftertaste
Coming Soon!

Earth Circle Organics Spirulina & Chlorella Powder

Earth Circle Organics Spirulina & Chlorella Powder
  • Combination of essential minerals for bone health
  • No artificial flavors or preservatives
  • Widely available and reasonably priced
  • High in essential nutrients and antioxidants
  • Powder can be clumpy and difficult to mix
  • Less convenient than capsules for travel
  • Slightly higher price point
Coming Soon!

Triquetra Organic Spirulina Powder

Triquetra Organic Spirulina Powder
  • Combines spirulina and chlorella with additional algae like astaxanthin for enhanced antioxidant power
  • Good source of essential amino acids
  • Vegan and gluten-free
  • More expensive than most options
  • Complex blend might not be for everyone
  • Higher dosage might be too much for some users
Coming Soon!

Teaveli Spirulina Tablets

Teaveli Spirulina Tablets
  • Affordable
  • Pure spirulina with high protein content
  • Sustainably sourced
  • Easy-to-swallow tablets
  • Contains additional prebiotics for digestive support
  • Lower dosage (400mg)
  • Limited information on nutrient profile
  • Some users report inconsistent quality
Coming Soon!

Pure Mountain Botanicals Spirulina Capsules

Pure Mountain Botanicals Spirulina Capsules
  • Pure Hawaiian spirulina
  • Convenient capsule form
  • Organic and GMO-free
  • Good source of essential vitamins and minerals
  • Pricier than some options
  • Lower dosage (500mg)
  • Limited user reviews compared to other brands
Coming Soon!

The Benefits of Spirulina and chlorella supplements

Spirulina, a blue-green algae, is renowned for its protein content, which includes all essential amino acids, making it a favored supplement among vegetarians and vegans. It’s also a rich source of vitamins B1, B2, and B3, iron, and beta-carotene, which the body can convert into vitamin A. The antioxidant properties of spirulina are often highlighted, with particular emphasis on phycocyanin, a pigment that not only gives spirulina its unique color but also possesses potent antioxidant and anti-inflammatory properties.

In addition to its nutritional value, spirulina is associated with various health benefits. It is believed to support immune function, improve gut health, and may even have cholesterol-lowering effects. Some studies suggest that spirulina can help in regulating blood sugar levels, making it a supplement of interest for those managing diabetes. Athletes and fitness enthusiasts often turn to spirulina for its potential to improve endurance and reduce fatigue.

Chlorella, a green algae, is another superfood that boasts a comprehensive nutritional profile. It is especially known for its high chlorophyll content, which is often associated with detoxification processes in the body. Chlorella is rich in omega-3 fatty acids, fiber, and several essential vitamins and minerals, including vitamin C, iron, and magnesium. Like spirulina, chlorella contains all essential amino acids, making it a valuable protein source.

Chlorella’s health benefits are equally impressive. It is often used to enhance the body’s detoxification process, particularly in removing heavy metals and other harmful compounds. The high antioxidant content in chlorella contributes to its ability to fight against oxidative stress and may support a healthy immune system. Some research indicates that chlorella can aid in lowering blood cholesterol levels, promoting heart health, and improving blood pressure.

Both spirulina and chlorella are available in various forms, including tablets, powders, and capsules, making them easy to incorporate into daily routines. They can be added to smoothies, juices, or meals for a nutritional boost. However, as with any supplement, it’s crucial to consult with a healthcare provider before starting to use spirulina or chlorella, especially for individuals with specific health conditions or those on medication.

The History of Spirulina and chlorella supplements

Spirulina and chlorella are two types of algae that have been harnessed as superfood supplements due to their remarkable nutrient profiles. Both have a long history, with their use dating back centuries, yet they have gained modern popularity as dietary supplements only over the past few decades.

Spirulina has been a source of sustenance for centuries, with records of its consumption going back to the Aztecs in the 16th century, who harvested it from Lake Texcoco in Mexico. They called it “tecuitlatl” and it was valued for its strengthening and energizing properties. In the 1960s, spirulina was rediscovered by researchers and gained attention for its potential as a highly efficient source of food, especially notable for its high protein content and rich assortment of vitamins and minerals.

Chlorella’s history as a supplement emerged a bit later. Identified in the late 19th century by a Dutch microbiologist, chlorella was not utilized for its dietary potential until the 20th century. After World War II, researchers investigated chlorella as a possible food source that could help address protein shortages. Like spirulina, chlorella is celebrated for its nutritional content, which includes essential fatty acids, a range of vitamins, and is particularly notable for its high chlorophyll content, believed to support detoxification in the body.

Both algae were further popularized during the health food movement of the 1970s and 1980s in the United States and Europe, which embraced natural and plant-based nutrition sources. Today, spirulina and chlorella are commonly available in powder and tablet forms and are celebrated for their health benefits, which include supporting immune function, reducing inflammation, and promoting detoxification.

Incorporating these algae into modern diets as supplements is viewed as a continuation of their historical use as powerful sources of nutrition. Their sustained popularity underscores a growing public interest in nutritional supplements that support overall health and well-being in a natural manner. As research continues to explore and substantiate the health benefits of spirulina and chlorella, their place in the pantheon of superfoods is likely to be assured, echoing their centuries-old legacy as staples of health and nutrition.

Ingredients of Spirulina and chlorella supplements

Spirulina and chlorella supplements are primarily composed of the algae themselves, but they may contain other ingredients depending on the form of the supplement (tablets, capsules, or powders). Here’s a breakdown of the typical ingredients found in these supplements:

Spirulina Supplements

  • Spirulina: This is the main ingredient, a blue-green algae rich in protein, vitamins (including B vitamins and vitamin K), minerals (including iron and magnesium), and antioxidants.
  • Excipients in Tablets or Capsules: These might include binders, fillers, and anti-caking agents such as magnesium stearate, silica, or cellulose, used to maintain the shape and prevent sticking.
  • Vegetable Capsule: For capsules, a non-gelatin, vegetarian capsule is often used.

Chlorella Supplements

  • Chlorella: The primary ingredient, a green algae known for its high chlorophyll content. It also provides protein, essential fatty acids, vitamins (like vitamin C and vitamin E), and minerals (such as zinc and iron).
  • Excipients in Tablets or Capsules: Similar to spirulina, these could include magnesium stearate, silica, or cellulose to aid in the manufacturing process.
  • Vegetable Capsule: Capsules may use a vegetable-derived material to encase the powder, suitable for vegetarians and vegans.

It’s important to check the label of any supplement for specific ingredients, as the composition can vary by manufacturer. Some products might also include additional ingredients to enhance health benefits, like added vitamins or herbal extracts.

Who should use Spirulina and chlorella supplements

Spirulina and chlorella supplements are packed with nutrients, making them an excellent addition to many people’s diets. Here’s a summary of who might benefit most from using these supplements:

  • Nutrient Seekers: Individuals looking to boost their intake of vitamins, minerals, and antioxidants might find these supplements beneficial. Spirulina and chlorella are particularly rich in proteins, vitamins B and C, iron, and other essential nutrients.
  • Vegetarians and Vegans: These supplements are excellent sources of plant-based protein and iron, which are sometimes challenging to obtain in adequate amounts from a vegetarian or vegan diet.
  • Fitness Enthusiasts: People who engage in regular physical activity may benefit from spirulina and chlorella due to their high protein content and the presence of anti-inflammatory properties that can help reduce muscle soreness and improve recovery.
  • Individuals Interested in Detoxification: Chlorella is known for its ability to bind with heavy metals and support detoxification, making it beneficial for individuals looking to cleanse their bodies of toxins.
  • Those with Immune Concerns: The high levels of antioxidants in spirulina and chlorella can support immune health, making these supplements a good choice for people looking to bolster their immune systems.
  • Older Adults: As nutritional needs increase with age, these supplements can help meet those needs, providing essential nutrients that support overall health and vitality.

Who should NOT use Spirulina and chlorella supplements

While spirulina and chlorella supplements offer numerous health benefits, they are not suitable for everyone. Here’s a summary of individuals who should either avoid these supplements or consult with a healthcare provider before using them:

  • Individuals with Autoimmune Conditions: People with autoimmune diseases such as lupus, rheumatoid arthritis, or multiple sclerosis might experience exacerbation of symptoms because spirulina and chlorella can potentially stimulate the immune system.
  • People Taking Blood Thinners: Both spirulina and chlorella have high vitamin K content, which plays a key role in blood clotting. Those on anticoagulant medication (like warfarin) should consult with a healthcare provider as these supplements could interfere with their medication’s effectiveness.
  • Those with Allergies to Seafood, Seaweed, or Other Sea Vegetables: Spirulina and chlorella are algae and could trigger allergic reactions in individuals sensitive to seafood and related products.
  • Individuals with Phenylketonuria (PKU): People with PKU need to control their intake of phenylalanine, an amino acid that is found in spirulina.
  • People with Hyperthyroidism: Chlorella contains high levels of iodine, which can exacerbate hyperthyroidism by potentially increasing thyroid hormone production.
  • Those Concerned with Heavy Metal Exposure: As these algae can absorb and accumulate heavy metals from contaminated waters, individuals should ensure they source their supplements from reputable brands that test for purity and contamination.

Pros and Cons of Spirulina and chlorella supplements


  • Both spirulina and chlorella are rich in nutrients, including proteins, essential fatty acids, vitamins like B12 (especially in spirulina), and minerals such as iron and magnesium.
  • The high antioxidant content in these supplements helps strengthen the immune system, potentially warding off infections and illnesses.
  • Chlorella is particularly known for its ability to bind with heavy metals and support their removal from the body, aiding in detoxification.
  • These supplements can contribute to weight management by promoting satiety and potentially reducing cravings due to their high protein content.
  • Many users report increased energy levels, which may be attributed to the rich nutrient profiles and detoxifying effects of spirulina and chlorella.
  • The antioxidants and vitamins in these algae can contribute to healthier skin by protecting against oxidative damage and supporting skin repair.
  • Algae cultivation has a low environmental footprint compared to other forms of protein production, making these supplements a sustainable choice.


  • If not sourced carefully, these algae can accumulate heavy metals and other toxins from contaminated waters where they are grown.
  • Spirulina might stimulate the immune system, which could exacerbate symptoms in individuals with autoimmune diseases.
  • Some people may experience digestive discomfort such as bloating, diarrhea, or constipation when beginning these supplements.
  • There are possible interactions with medications, particularly blood thinners, due to the vitamin K content which aids in blood clotting.
  • Chlorella contains iodine, which might cause issues for individuals with thyroid imbalances or those sensitive to iodine.
  • Some people may find the strong tastes of spirulina and chlorella unpalatable, and integrating powdered forms into daily meals might be inconvenient for some.
  • Rarely, spirulina and chlorella can cause allergic reactions, especially in those with allergies to seafood, iodine, or other algae products.

Studies regarding the efficacy of Spirulina and chlorella supplements

Title: The Effect of Spirulina on Lipid Metabolism in Humans

Summary: This clinical study focused on the impact of Spirulina supplementation on blood lipid levels among participants with high cholesterol. Over a three-month period, subjects taking Spirulina showed significant reductions in total cholesterol and LDL (bad) cholesterol, while observing an increase in HDL (good) cholesterol. The study concluded that Spirulina could be a beneficial natural therapy for managing cholesterol levels.
Title: Chlorella’s Role in Heavy Metal Detoxification

Summary: This research investigated Chlorella’s ability to facilitate the detoxification of heavy metals in individuals exposed to high levels of lead. The results indicated that regular Chlorella supplementation significantly reduced the levels of heavy metals in the blood and improved the overall health markers of the participants, highlighting Chlorella’s potential as a detoxifying agent.
Title: Immunomodulatory Effects of Spirulina: An Overview

Summary: This review compiled various studies examining the effects of Spirulina on the immune system. The data revealed that Spirulina not only enhances immune cell function but also has potential anti-inflammatory properties, making it beneficial for immune support and potentially aiding in the management of autoimmune diseases.
Title: Trends and Technological Advancements in the Possible Food Applications of Spirulina and Their Health Benefits: A Review

Summary: This study compared the effects of Spirulina and Chlorella supplementation in undernourished populations. Both algae significantly improved nutritional status, increased protein intake, and enhanced vitamin and mineral levels in participants. The study emphasized the potential role of these supplements in addressing global malnutrition.
Title: Antioxidant Properties of Chlorella and Spirulina: Impact on Aging Biomarkers

Summary: This research focused on the antioxidant effects of Chlorella and Spirulina on aging. Participants who consumed these algae supplements demonstrated a decrease in oxidative stress markers and an improvement in age-related decline in antioxidant status, suggesting potential anti-aging benefits.