Purulina appears to be a misspelling of "spirulina," which is a type of blue-green algae known for its high nutritional content. It is often consumed as a dietary supplement due to its rich protein content, vitamins, and minerals, and is popular among health enthusiasts. Spirulina is available in powder, tablet, or flake form and is commonly added to smoothies, juices, or health bars. Its potential health benefits include antioxidant properties and support for immune function.