Table 1.
Experimental data sets of phase I studies assessing the pharmacokinetics of rivaroxaban in healthy male adult subjects
Study | Topic | Main outcome |
---|---|---|
Study A | Mass balance and safety [37] | Rivaroxaban and its metabolites were eliminated via renal (66 %) and biliary/faecal routes (28 %) |
Study B | Absolute bioavailability [32] | Compared with a 1 mg IV dose, under fasted conditions the bioavailability of rivaroxaban 5 mg was complete and was 66 % for rivaroxaban 20 mg. Bioavailability of rivaroxaban 20 mg was 59 % relative to the 5 mg dose |
Study C | Pharmacokinetics across a wide dose range [16] | Rivaroxaban had well-defined pharmacokinetic characteristics across doses of 1.25–80 mg administered as oral solution or tablet |
Study D | Absorption from proximal and distal small bowel and ascending colon | The relative bioavailability of rivaroxaban depends on the site of absorption along the gastrointestinal tract and is poorest in the ascending colon |
Study E | Food effect on pharmacokinetics of two 5 mg tablets | Compared with fasted conditions, mean t max, mean AUC and mean C max of rivaroxaban 10 mg were increased when taken with food |
Study F | Food effect on pharmacokinetics of four 5 mg tablets or one 20 mg tablet | There were no pharmacokinetic differences between the two dosing regimens or between two types of meals. Mean t max, mean AUC and mean C max were significantly higher after food |
Study G | Food effect on pharmacokinetics of one 10 mg tablet or one 20 mg tablet |
Bioavailability of rivaroxaban 10 mg was independent of food Bioavailability of rivaroxaban 20 mg was similar when taken with food and lower when taken without food |
Study H | Food effect on pharmacokinetics of 10 mg and 20 mg oral solution |
Bioavailability of rivaroxaban 10 mg was independent of food Bioavailability of rivaroxaban 20 mg was similar when taken with food and lower when taken without food |
AUC area under the plasma concentration–time curve, C max maximum (peak) plasma drug concentration, IV intravenous, t max time to C max