Did not feel anything but  raised blood sugar.
I took these for about a week. I felt no different in energy but my blood sugar and weight were all over the place. I have now discovered that the rice flour they put in some supplements is the cause of this. I don't eat grain of any kind so my body reacts to it by raising my blood sugar and weight. I do not recommend these if you are grain free. This is not the fault of the supplement but getting no useful results is. Due to this I give it 3 stars.
Rating: 3 stars