 Spirulina maxima is a type of blue-green algae that has been shown to have strong antioxidant properties. In vitro experiments showed that a methanolic extract of spirulina had an IC50 value of 0.18 mg per milliliter, meaning it could protect against oxidative damage by up to 50%. In vivo experiments also demonstrated that spirulina can provide antioxidant protection in plasma and liver. Additionally, the extract contained high levels of phenolic acids, adecophorol, and SS-caridine, all of which are known antioxidants. Overall, these findings suggest that spirulina may be beneficial for reducing oxidative stress and improving overall health. This article was authored by MS Miranda, RG Cintra, SP M Bauros, and others.