Ive been taking it since last week sometime. One day last week I took 2 instead of one and then went to the gym. I felt nauseated but I figured it was lack of food and then strenuous exercise. Yesterday I then took 2 first thing in the morning prior to my 5am workout. Again, feeling nauseated after about 25 min of cardio. So today back to just one pill early am before my 5am workout and I felt fine. It does suppress the appetite but for me slightly. I am always a ravenous fool.