Difference and nutritional intake

Chlorella and Spirulina

Nutritional contribution

Chlorella, like Spirulina, are excellent sources of digestible protein and contain the nine essential amino acids that the body can not make and must be found in our diet.

Because they grow in freshwater pond, these two microalgae do not contain iodine and their sodium content is reduced.

Chlorella and Spirulina both contain essential elements for the good functioning of the organism.


Nutrition Facts




Protein 55 à 70 55 to 70 g/100g
Calcium 180 à 220 400 to 600 mg/100g
Iron 155 à 175   50 to 100  mg/100g
Magnesium  260 to 300  300 to 400  mg/100g
Chlorophyll  3 650 to 4 750  +/- 1 000  mg/100g
SOD (superoxydes dismutases)  -  400 000 to 500 000  UI[A]/100g
GLA (gamma-linolenic acid) 400 to 700 +/- 1 000 mg/100g
Phycocyanin - 12 000 to 14 000 mg/100g
Fibres 8 000 to 9 000 7 000 to 9 000 mg/100g
Carotenoids 100 to 120 300 to 400 mg/100g
Vitamin B3 (niacin) 30 to 35 14 to 17,5 mg/100g
Vitamin B6 (pyridoxine) 1,6 to 3 0,8 to 4 mg/100g
Vitamin B9 (folic acid) 2 to 2,8 10 mcg/100g
Vitamin C (ascorbic acid) 45 to 55 - mg/100g


In Chlorella, we notice an exceptional concentration of chlorophyll and lutein. Chlorella is the plant that contains the most chlorophyll and lutein on earth. (Lutein > 150mg/100g, Chlorophyll > 3,000mg/100g).

The Key Differences between Chlorella and Spirulina

Chlorella and Spirulina each provide polyunsaturated fatty acids in different and complementary proportions. Chlorella contains Omega 3 (like those found in flaxseed) while in Spirulina we find Omega 6.

Spirulina is rich in phycocyanin: a rare blue-green pigment immunostimulant and powerful antioxidant. Chlorella does not contain phycocyanin but contains chlorophyll, a powerful antioxidant also very active. Chlorella is very popular especially to detoxify the body and stimulate liver activity.

As the cell membrane of Chlorella contains not assimilable fibers (16 to 20%), Chlorella will be preferred by those who want to rebalance or stimulate their intestinal transit. Since Spirulina does not have a cellulosic membrane, it will be more easily digested than Chlorella and will be preferred by athletes; in addition, Spirulina can fight against muscle fatigue and restore energy and vitality.

Spirulina is richer in carotenoids, hence its essential protective effect to maintain good health and protects cells from the effects of aging. In recent studies carotenoids have also been identified as primary protectors for the cardiovascular system.

The absorption of iron contained in Chlorella and Spirulina is at least 5 times more effective than that from meat. 3 g of Chlorella or 5 g of spirulina provide between 4 and 5 mg of bio assimilable iron and correspond to about 50% of the recommended daily intake for over 50 years.1

Chlorella is preferred for its best iron supply.

Chlorella contains B12, 100% bio-assimilable and active compared to Spirulina which also contains partially assimilable B12 p.c. considered to be analog and therefore less active for humans.2

1 Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids, 2000. Food and Nutrition Board, Institute of Medicine.
2 Watanabe 1999, 2007.


  • Stimulates the immune system
  • General well-being
  • Fight against constipation
  • Lowers the blood pressure and bad cholesterol
  • Suitable for vegetarians


  • Stimulates the immune system
  • Antioxidant and anti-aging effect
  • Lowers high-blood pressure and bad cholesterol
  • Improves muscle performance
  • Suitable for vegetarians

Moreover, Chinese researchers have shown that phycocyanin, a respiratory protein pigment unique to Spirulina, is involved in the bone marrow by stimulating the evolution and differentiation of stem cells of red and white blood lines.3

A sampling of slightly hypertensive volunteers consumed Chlorella for two months and noticed a reduction and a stabilization of their blood pressure as well as a reduction in LDL ("bad") cholesterol.4


3 Zhang et al. – Effects of polysaccharide and phycocyanin from spirulina on peripheral blood and hematopoietic system of bone marrow in mice, Proc. of Second Asia pacific conf. on algal biotech., Univ. of Malaysia, 1994.
4Merchant et al. – Nutritional supplementation with chlorella p For mild to moderate hypertension, J. Med. Food, 2002, 5(3):141-52