Some studies have examined spirulina or its components in relation to antiviral activity. Findings from laboratory work, animal studies or other spirulina preparations do not establish that SPRU, a fresh-frozen spirulina food, prevents or treats COVID-19 or any other infection.
SPRU is a food, not a medicine. Do not use it instead of vaccination, prescribed treatment or medical advice. If you have symptoms or a health concern, contact a qualified healthcare professional.