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Algae · in-depth review

Spirulina

Spirulina

Spirulina is dried Arthrospira. It is high in protein and contains phycocyanin, used to increase plant protein and blue-pigment nutrition.

Also known asArthrospira platensisBlue-green algae
Related diseasesIron-deficiency anaemia
Related symptomsFatigue

Marked asPrimarySupporting

Primary

Increases plant protein

Arthrospira has almost no cellulose cell wall. The dried powder is high in protein, and phycocyanin carries both a blue pigment and antioxidant peptides. For people who want to increase plant protein with algae, changes in dietary protein sources and digestive comfort are more often noticeable with continued use.

Primary

Supports algal micronutrients

When culture conditions are suitable it also carries iron, B vitamins, and carotenoids; phycocyanin gives the dried powder its blue-green color. For people who eat little animal food and want algal micronutrients at the same time, changes in everyday stamina are more often noticeable with continued use.

Primary

Support gut microbiota

Spirulina contains polysaccharides and phycocyanin; in vitro and animal work shows it can promote beneficial bacteria and curb some pathogens. Powder is often added to smoothies or meal replacements; people on refined diets with irregular bowel habits who add plant protein often match gaps on this microbiota-support path, alongside micronutrient uses.

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With foodBest taken with breakfast or lunch; if your stomach is sensitive, switch to after a meal
Best timeMorning or midday
SolubilityWater-dispersible

Use it consistently for several weeks, then reassess based on how you feel and your diet.

General wellnessFor general wellness, 1–3 g of dried powder daily, or the daily serving listed on the tablet label
Specific needsTypical adult daily safety upper limit is about 10 g; choose products with heavy-metal testing, and do not exceed this on your own long term.

How oftenGenerally use daily as directed on the product label.

Cautions

Contraindicated in PKU; algae sensitivity, autoimmune disease, or pregnancy: ask a clinician before use.

Interactions

  1. Immunosuppressants
  2. Autoimmune-disease medicines (cyanobacteria immune-stimulation theory)
Common side effects

· Mild gastrointestinal discomfort or an unfamiliar taste may occur.

Rare but important

· Some people may have allergic reactions or interactions with medicines.

Long-term dependenceNo typical addiction evidence; do not exceed labeled amounts on your own long term.

Sources

These are institution pages you can check—not a certification of this ingredient.

Medical disclaimerThis page is compiled by the HerbBB editorial team for general health information only. It is not a substitute for advice from a doctor, pharmacist, or other qualified clinician. If you have a health condition, take medicines, or are pregnant or breastfeeding, speak with a professional first.