Naturya Organic Spirulina Powder 200gThe bioactive supergiant, spirulina has grown on earth for over 2. 4 billion years. This ancient cyanobacterium is a planet friendly source of protein, cultivated sustainable in freshwater pools under warm sunlight. Investigated by NASA as ideal astronaut nutrition, spirulina is a natural source of vitamins A, B1, B2, iodine and manganese. These nutrients protect the body against oxidative stress, nourish the immune system and support heart function.