I am 58 year old male and nerver had problems loseing pounds before. I work out everyday that includes strenght training three times a week. And one hour of arobics everyday, I eat about 1500 to 1800 calories a day. I am over six foot tall and 320 lbs. I take norvasc for blood pressure and have no other health issues. I have not drop a pound in five weeks is it the norvasc i take.