The study will consist of a Screening visit (up to 30 days before the first dosing session), three dosing sessions each separated by a maximum of at least 6 days washout, and a Follow up visit (7 to 14 days after the last dose of study medication). Each subject's participation in the study will be approximately 12 weeks Sixteen subjects will be enrolled to provide a minimum number of 12 evaluable subjects. The doses to be administered will be 100 mg and 200mg in the fasted state, and 100mg following a high fat breakfast.