After about a week I noticed improved clarity and definitely better cortisol balance, decreased stress. The only thing I am disappointed in is only 8 oz of water to one mix packet and I don’t really feel the caffeine. Unless it’s subtle and I don’t notice it but I don’t jack up my caffeine so 100mg I should feel easily. I don’t drink coffee, haven’t for months so that is my only confusing factor with the ingredients. So far best supplement I’ve tried but not sure if I will reorder.