Inositol Powder has been shown to raise seratonin levels, that is why the Review Title is: Don't worry, be happy - take Inositol Powder. Inositol is also supposed to be good for brain function.\nThis is a good product. I add a heaping teaspoon every day to my nonfat plain yogurt. It has a smooth texture and good taste.\nI do appreciate that Swanson offers Inositol in a powder form for ease of use in large quantities. I also appreciate that it is in a plastic container with no aluminum parts of the container.\nI only gave it a 3 for convenience because once it is open it is convenient, but the seal is VERY DIFFICULT to open and I want to be certain that all the aluminum from the seal is removed from the edge of the jar and this is a tedious task. I wish that the seal were easier to totally remove.\nI purchased many jars of SW1164 when it was on sale for $6.99 and I hope that it goes on sale again soon.