Norvasc and dizziness

I have only been taking the generic form of Norvasc for about a week, and I can't take it anymore, as I have to drive to work, and was unable to while I was on it. I was very dizzy, had a red, hot to the touch face constantly, only wanted to sleep all the time, my legs feel so heavy, have a headache, and am very depressed and anxious. Also had stomach pains, and nausea. How can they expect people who have to go to work everyday to take that stuff? It is not a good drug, unless all you need to do is sleep all day!