Nutrient Database

Spirulina

herbal

Approved

General information about nutrients. No diagnosis, no medical advice. If you take medication, are pregnant or have a medical condition, talk to your doctor before taking supplements.

Fasting safe

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Overview

Blue-green algae rich in protein, B vitamins, iron, and phycocyanin antioxidant. One of the most nutrient-dense foods.

Interactions

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Vitamin C enhances spirulina iron absorption

Spirulina is rich in non-heme iron, which requires reduction from Fe3+ to Fe2+ for absorption. Vitamin C performs this reduction, significantly enhancing the bioavailability of spirulina's iron content.

Expert consensus: Strong

Source quality important for heavy metal contamination.