Just finished my bottle I purchased in September! lol I have a habit of not being consistent with supplements. Today as i was hearing up to order another bottle i did a little more research on this product. I found out that Spirulina; removes toxins from the blood aids in weight lost improves metabolism improves eye health gives you brighter eyes (pigment) enhances brain health from Parkinsons & Alzheimer's sharpens memory prevents Cardiovascular disease & cancer helps with Aids & HIV symptoms fights allergies and is high in protein (vegans) I did notice that while taken this I would have better bowel movements and feels refreshed afterwards and improved my energy but I wasnt consistent. I am ordering 2 more bottles and will take the recommended dose 3-4x a week on a consistent basis along with exercise and a more plant based diet. I to se how this weighs in improve my memory, eyesight and weigh lost. I think it has helped me but this time I will be paying closer attention. I prefer a more natural solution to my areas of concern and as this product is all natural I'm confident I will see results. I'm optimistic and you should be too if you are seeking enhancement that won't leave you with bad results or complications