text: Drospirenone is excreted in urine and feces, with slightly more excreted in feces than in urine. Only trace amounts of unchanged drospirenone can be found in urine and feces. At least 20 different metabolites can be identified in urine and feces. Drospirenone and its metabolites are excreted in urine about 38% as glucuronide conjugates, 47% as sulfate conjugates, and less than 10% in unconjugated form. In feces, excretion is about 17% glucuronide conjugates, 20% sulfate conjugates, and 33% unconjugated.
  The elimination half-life of drospirenone is between 25 and 33 hours. The half-life of drospirenone is unchanged with repeated administration. Elimination of drospirenone is virtually complete 10 days after the last dose.