Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Spirulina, a blue-green algae, has gained attention for its potential antiviral properties, including possible activity against influenza viruses. The scientific evidence supporting its use for influenza is limited but exists primarily in preclinical studies and a small number of early human trials. Laboratory research has demonstrated that spirulina extracts can inhibit the replication of various viruses, including influenza A, by modulating immune responses and interfering with viral entry into host cells. Notably, a study published in the Journal of Medicinal Food (2005) showed that spirulina could enhance the antiviral response in animal models, likely due to compounds such as calcium spirulan, which appears to block virus attachment and penetration.

However, clinical evidence in humans is sparse. A few small studies have suggested that spirulina supplementation may improve immune markers and reduce the incidence of viral infections, but these studies often lack specificity to influenza or are limited by small sample sizes and short durations. There is no robust, large-scale human trial demonstrating that spirulina supplementation directly prevents or treats influenza in the general population.

In summary, while there is some scientific rationale and early-stage evidence for spirulina's antiviral activity, particularly in laboratory settings, the evidence in humans remains preliminary. As such, spirulina may be considered a promising adjunct, but it should not replace established influenza prevention or treatment strategies such as vaccination and antiviral medications.

More about spirulina
More about Influenza

Other ingredients used for Influenza

Other health conditions supported by spirulina

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