Spirulina is a blue-green algae used as a dietary supplement due to its high nutrient and antioxidant content. This product, Ghf Spirulina 400mg, is available in tablet form and is used to improve overall health, strengthen the immune system and provide energy. It has also been used to aid weight loss and as a supplement in vegetarian or vegan diets due to its protein content. Instructions for use The recommended use for Ghf Spirulina 400mg 100 Tablets is to take 2 tablets per day, preferably with meals. It is recommended to follow the manufacturers instructions and consult a healthcare professional before starting any supplement. ingredients The main active ingredient in this product is spirulina.