 At Months 1, 3, 6, 9, and 12, you will return to clinic. You will have a physical exam including measurement of vital signs. You will have a careful examination of the inside of your mouth.You will have blood about 2 teaspoons drawn for routine tests and to check your liver function about 1-2 teaspoons. At Months 3, 6, and 12, you will have blood about 2 teaspoons drawn for research testing and to measure the level of study drug in the body. 