This is the best maca powder I have ever used. I have tried others and thought I noticed some benefit. But, with the SunFoods' brand, I notice a huge difference every time I drink it in my smoothies. My mood lifts dramatically and I have much more energy. And this comes from just a tablespoon. I might actually taper it down a bit to make it last longer. I don't need to be that chipper and happy at work - you know, that place where I'm supposed to be miserable!? I'll have a full tablespoon on the weekends instead. In fact, it just started kicking in and that is what prompted me to write a review. Great stuff!!! WOOOHOOOO!!!! ;)