What Is Spirulina?Spirulina, a type of blue-green algae, has gained popularity as a superfood due to its impressive nutritional profile and various health benefits. Historically consumed by ancient cultures like the Aztecs, spirulina is a powerhouse of essential nutrients, including protein, vitamins, minerals, and antioxidants. Available in powder, tablet, and capsule forms, it is a staple in health-conscious diets, particularly for vegetarians and vegans due to its complete protein content.