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Studies confirm: These are the 5 best chlorella supplements in 2025

Written by Dr. med. Silke Fischer
9. September 2025

We tested over 22 supplements. Only 5 stood out in the end!

Chlorella, the nutrient-rich microalga, is much more than just a superfood. Known for its detoxifying properties and ability to bind heavy metals in the body, it is often used to support overall health. With over 50% protein content, all essential amino acids, and a high proportion of chlorophyll, it strengthens the immune system and provides essential nutrients. But what should you look for when taking chlorella? Which product truly delivers on its promises? Our editorial team spoke with experts, reviewed studies, and analyzed 17 products for their ingredients and effectiveness.

Independent & objective
Proven criteria
Self-financed editorial team
Test Winner No.1

What is chlorella?

Chlorella, a green microalga, is especially valued for its detoxifying properties. It has the unique ability to bind and eliminate heavy metals and harmful substances from the body. Many people use chlorella as natural support for detoxification processes.

Additionally, it strengthens the immune system through its antioxidant properties and can promote overall vitality. It is also often used to support digestion and as a natural energy booster, making it a popular supplement for those who want to support their bodies naturally.

5 reasons why you should take chlorella! (With study evidence)

  1. Natural detoxification: Chlorella binds heavy metals and toxins in the body, allowing them to be safely eliminated. Especially helpful in detox programs. [1][2]

  2. Immune System Strengthening: Chlorella supports the production of immune cells, helping to ward off infections and strengthen defenses. [2]

  3. More Energy and Vitality: Many use chlorella to naturally replenish their energy reserves and feel more vital overall. [1][2]

  4. Digestive Support: The algae supports healthy digestion and can help regulate gut flora, leading to better well-being. [3]

  5. Faster Recovery: Chlorella is valued by athletes to promote recovery after physical exertion and help the body regain fitness more quickly.

These 3 qualities make a high-quality chlorella supplement

We now know how important the benefits of chlorella can be for our bodies. However, many people are unable to take full advantage of these benefits through diet alone.

Therefore, health experts often recommend using chlorella as a dietary supplement to fill these gaps and optimally support the body.

But beware! Not all chlorella supplements are created equal.

Often, differences are not immediately apparent to laypeople, but experts point out that there are significant quality differences in chlorella products.

Three factors are particularly important to ensure that a product supports the body effectively and sustainably – otherwise, it can quickly become a waste of money.

High chlorophyll content:

A high-quality chlorella supplement should be rich in chlorophyll. Chlorophyll is the pigment that gives chlorella its green color and is responsible for its detoxifying properties. It supports blood cleansing and body detoxification, allowing toxins to be eliminated more effectively.

High protein content:

Chlorella is an excellent plant-based protein source. A high-quality product contains at least 50% protein, including all essential amino acids that the body needs for building and repairing tissue. Make sure the supplement has this high protein content to fully benefit from its advantages.

Purity and quality:

A high-quality chlorella supplement should be free from contaminants and harmful substances. The purity of the product is crucial to ensure you receive only the best nutrients. Products manufactured under strict quality standards offer the highest safety and effectiveness.

The top 5 chlorella supplements in direct comparison with a clear test winner:

Chlorella products have become increasingly popular in recent years, but not all of them meet the high expectations.

Our analysis is based on comprehensive research, evaluation of scientific studies, consultations with nutrition experts, and verification of customer reviews.

We evaluated the products according to the following criteria: chlorophyll content, protein content, purity and quality of ingredients, and customer feedback.

Of the 22 chlorella supplements tested, only 5 met our strict standards. The remaining 17 showed deficiencies, such as unnecessary additives, questionable ingredient origins, or quality problems that impaired their effectiveness.

Below we present our top 5 best chlorella supplements in Germany.

Badge Test Winner Pharmacy Report 11-24
1st Place
by viktilabs

Our conclusion:
Chlorella Vulgaris by Viktilabs stands out as a top product among chlorella supplements on the market. The product particularly impresses with its high chlorophyll content, which offers effective support for body detoxification. Additionally, it delivers over 50% protein, including all important amino acids that contribute to regeneration and tissue building. Cultivation in a closed system guarantees the highest purity, minimizing the risk of contamination. Customer feedback is also consistently positive – many users report increased energy and improved well-being after regular intake.

Advantages

  • High chlorophyll content to support detoxification
  • Over 50% protein content, ideal for regeneration and energy
  • Purity and quality through sustainable production without contaminants
  • Positive customer reviews on effectiveness and tolerability
  • Manufactured in Germany, with strict quality controls
  • Optimal nutrient density thanks to gentle cultivation for maximum effectiveness

Disadvantages

  • Not available in retail stores
  • Sometimes sold out due to high demand
2nd Place
Algomed Chlorella Tablets
by ALGOMED

Our conclusion:
The Algomed Chlorella Tablets stand out for their exceptional purity and controlled cultivation in a closed glass tube system in Germany. This process protects the algae from external contaminants and preserves their nutrient density, ensuring high quality and effectiveness. Additionally, gentle drying below 42°C in raw food quality retains most of the essential nutrients. Customers praise the green, fresh color and pleasant, grassy taste, both indicators of high quality.

Advantages

  • High chlorophyll and protein content that supports detoxification and overall vitality
  • Purity and quality ensured by controlled cultivation in a glass tube system, free from contaminants
  • Positive customer reviews confirm effectiveness and tolerability

Disadvantages

  • Almost twice as expensive as our test winner
  • Packaged in plastic instead of glass, making it less sustainable and of lower quality
3rd Place
Chlorella Taiwan Tablets
by sunday natural

Our conclusion:
The Chlorella Taiwan Tablets impress with their natural content of 2.2% chlorophyll and 14% Chlorella Growth Factor (CGF), which is believed to promote cell growth. Cultivated in outdoor pools in Taiwan, the algae benefit from natural light conditions and temperatures, resulting in high nutrient density. Gentle spray drying helps optimally preserve nutrients. The tablets are vegan, GMO-free, and free from additives – ideal for those looking to supplement a vegetarian or vegan diet.

Advantages

  • Naturally high chlorophyll and protein content, ideal for supporting vitality
  • Cultivated in outdoor pools under natural conditions for high nutrient density
  • Vegan, GMO-free, and free from additives, ideal for plant-based nutrition

Disadvantages

  • Cultivation in outdoor pools carries a higher risk of contamination compared to closed systems
  • Chlorophyll content naturally fluctuates, which can affect consistency of nutrient intake
  • Price-performance ratio is rather weak compared to similar products
4th Place
BIO Chlorella Tablets
by EDEL KRAUT

Our conclusion:
The BIO Chlorella Tablets from EDEL KRAUT stand out for their certified organic quality and sustainable packaging. Controlled organic cultivation guarantees that the chlorella algae are free from pesticides and other harmful substances. They are also completely free from additives and are gently processed to best preserve nutrient density. With a price matching our test winner, the product offers a solid option for health-conscious consumers, even if it is slightly lower in nutrient density.

Advantages

  • Organic quality, guaranteed free from pesticides and additives
  • Gentle processing to preserve nutrients
  • Sustainably packaged, environmentally friendly, and reusable

Disadvantages

  • The chlorophyll and protein content is somewhat lower than the top products
  • Comes in a bag instead of premium glass packaging
5th Place
Bio Spirulina & Chlorella Tablets
by natural elements

Our conclusion:
The Bio Spirulina & Chlorella Tablets from natural elements combine the benefits of both algae types and provide an extra dose of chlorophyll for your well-being. These tablets are organically certified, vegan, and contain no unnecessary additives. The high dosage and bioavailability ensure that the nutrients can be efficiently absorbed by the body. Nevertheless, the product falls short of the top products in some aspects, especially regarding pure chlorella concentration.

Advantages

  • Combination of organic spirulina and organic chlorella for an extra chlorophyll boost
  • Free from additives, non-GMO, and strictly controlled
  • High bioavailability thanks to effective dosage

Disadvantages

  • Mixed product, contains not only chlorella but also spirulina, which diminishes the specific benefit for chlorella purists
  • Somewhat lower protein content compared to pure chlorella products
  • Lower customer ratings compared to the top rankings

Our Conclusion

The Chlorella Vulgaris from Viktilabs emerges as our test winner in a comprehensive comparison. It impresses with its excellent bioavailability, absolute purity, and high quality of ingredients.

The detoxifying properties and high chlorophyll content make it an excellent choice for anyone who wants to support their body naturally. Both positive customer feedback and expert opinions confirm the effectiveness and quality of this product. For anyone looking for a high-quality chlorella supplement, this product is undoubtedly the best choice.

Badge Test Winner Pharmacy Report 11-24
1st Place
by viktilabs

Our conclusion:
Chlorella Vulgaris by Viktilabs stands out as a top product among chlorella supplements on the market. The product particularly impresses with its high chlorophyll content, which offers effective support for body detoxification. Additionally, it delivers over 50% protein, including all important amino acids that contribute to regeneration and tissue building. Cultivation in a closed system guarantees the highest purity, minimizing the risk of contamination. Customer feedback is also consistently positive – many users report increased energy and improved well-being after regular intake.

Advantages

  • High chlorophyll content to support detoxification
  • Over 50% protein content, ideal for regeneration and energy
  • Purity and quality through sustainable production without contaminants
  • Positive customer reviews on effectiveness and tolerability
  • Manufactured in Germany, with strict quality controls
  • Optimal nutrient density thanks to gentle cultivation for maximum effectiveness

Disadvantages

  • Not available in retail stores
  • Sometimes sold out due to high demand

Exclusive Discount for Our Readers: Up to 30.11%!

Many of you have shown interest in trying the test winner of our chlorella comparison to experience the numerous health benefits for yourselves.

In response to this, there are now exclusive value packages with a special price advantage. The test winner impresses with its excellent quality and is recommended by experts for natural detoxification, strengthening the immune system, and promoting overall well-being.

Your exclusive offer at a glance:

  • 30.11% discount on the test winner of our chlorella comparison
  • Available for a limited time only



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