Buy drugs is not easy. Always be careful because each organization operates in its rhythm. The first time when I used spirulina was the recommendation of a doctor and I continued taking these conprimés because I have seen beneficial results. This product is identical to products from a store but I wanted to order here for convenience. Spirulina has detoxifying effects, it gives the energy ration. Spirulina for me was perfect, I recommend the product because it is good quality. Amazon thank you!