This stuff is great, while I don't like this kind as much as the Natural Calm with Calcium, it was my own fault for not looking close enough when I ordered the second bottle for the office. I actually look forward to having this in the AM with my breakfast and in the PM before bed. You can feel the relaxation slightly, it is not overwhelming. Not the kind of thing that knocks you out when you take it, but if you pay attention you can feel it.The great thing about the calcium is it is a great way to help sustain and maintain weight loss. This is the best flavor they offer no doubt about it.