Subjects will attend a Screening Visit within 28 days before receiving their first dose of AZD7594, if they are found to be eligible, they return for Treatment Period 1, when they will have baseline assessments, and then will be randomized into one of the 6 treatments sequences. For each Treatment Period, the subjects will receive their investigational medicinal product (IMP) dose in the morning of Day 1, will have further assessments for 48 hours after dosing (residential period) and will return to the study center for ambulatory visits 72, 96, 144 and 240 hours after dosing, (Day 4, Day 5, Day 7 and Day 11 respectively).