Micro-algae, which is highly nutritious and an excellent source of protein, chlorophyll, vitamins, minerals and amino acids. Benefits: Spirulina provides more stamina, strength, better nutrient absorption and is safe for children and pregnant women (check with your heath care professional first). Spirulina powder is approved by both the FDA and WHO as a healthy food. Spirulina powder is very popular among athletes and bodybuilders. Spirulina health effects include immune system enhancement, reducing the harmful blood fats, reducing the toxicity of heavy metals and radiation protective effects. Spirulina powder can be added to fruit or vegetable juices to make it more nutritious. It is tasty in soups, salads, pasta or mixed with yogurt.