Spirulina powder, a dried and pulverized form of blue green algae, is available in health food stores as a bulk powder, or in capsule form. MedlinePlus, a division of the National Institutes of Health reports that spirulina is rich in nutrients, although evidence of health benefits from consuming spirulina powder is unclear. Consult your doctor before using spirulina powder to treat any medical condition.
Features
Spirulina powder contains nutrients and antioxidants, according to the University Of Maryland Medical Center (UMMC), which lists zinc, iron, selenium, beta-carotene, manganese and B-complex vitamins among the nutrients found in the powder. Spirulina also contains amino acids and protein. The U.S. Food and Drug Administration (FDA) does not oversee the manufacture of Spirulina powder and the UMMC warns that some samples may contain heavy metals and other toxins.
Potential Benefits
A good source of plant protein, spirulina powder may be beneficial in treating malnourishment, according to the "Gale Encyclopedia of Alternative Medicine." Additional potential benefits, include the treatment of diabetic neuropathy, rheumatoid arthritis, supplementation of vitamin B12 for vegans and general strengthening of the immune system, notes Gale. Talk to your doctor before using spirulina powder to treat these conditions.
Dosage
The "Gale Encyclopedia" reports a standard dosage of spirulina powder as between 3 g and 5 g per day for adults. No standard dosage is available for children. Consult a qualified medical professional for specific dosage advice.
Side Effects
Spirulina powder has no known interactions with common foods or medications, according to the "Gale Encyclopedia," but it may cause side effects in some people. The most common side effects include nausea, vomiting, and diarrhea. In rare instances, an allergic reaction may result in anxiety or insomnia.
Considerations
Because spirulina powder comes from underwater algae, it may absorb micro toxins present in the water, according to the UMMC. Manufacturers who harvest spirulina from contaminated waters may pass the toxins on to the consumer. Consult your doctor for advice on choosing a reputable brand of spirulina.
References
- Medline Plus: Spirulina
- University of Maryland Medical Center, UMMC: Spirulina
- "Gale Encyclopedia of Alternative Medicine, Volume 4"; Jacqueline L. Longe; 2005
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