<qa>  What is the subject unable to refrain from the consumption of red wine, seville oranges- The subject is unable to refrain from the consumption of red wine, seville oranges, grapefruit or grapefruit juice and pummelos, exotic citrus fruits, grapefruit hybrids or any fruit juices containing these fruits from 7 days prior to the first dose of study medication and for the duration of the study. 