Comparative Pharmacology
Head-to-head clinical analysis: AYGESTIN versus HYDROXYPROGESTERONE CAPROATE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AYGESTIN versus HYDROXYPROGESTERONE CAPROATE.
AYGESTIN vs HYDROXYPROGESTERONE CAPROATE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Progestin that suppresses gonadotropin secretion, inhibits ovulation, and induces endometrial changes by binding to progesterone receptors.
Hydroxyprogesterone caproate is a synthetic progestin that acts as an agonist of the progesterone receptor. Its mechanism in preventing preterm birth is not fully understood but may involve suppression of uterine contractility, maintenance of cervical integrity, and modulation of the inflammatory response.
5 mg orally once daily for secondary amenorrhea; 5 mg orally once daily from day 5 to day 25 of menstrual cycle for abnormal uterine bleeding.
250-500 mg intramuscularly once weekly. For recurrent preterm birth prevention: 250 mg intramuscularly weekly starting at 16-20 weeks gestation until 36 weeks.
None Documented
None Documented
Clinical Note
moderateHydroxyprogesterone caproate + Digoxin
"Hydroxyprogesterone caproate may decrease the cardiotoxic activities of Digoxin."
Clinical Note
moderateHydroxyprogesterone caproate + Digitoxin
"Hydroxyprogesterone caproate may decrease the cardiotoxic activities of Digitoxin."
Clinical Note
moderateHydroxyprogesterone caproate + Deslanoside
"Hydroxyprogesterone caproate may decrease the cardiotoxic activities of Deslanoside."
Clinical Note
moderateHydroxyprogesterone caproate + Acetyldigitoxin
Terminal half-life 5-12 hours; clinical context: requires twice-daily dosing for consistent serum levels.
Terminal elimination half-life is approximately 7-8 days (range 5-14 days) due to slow release from the intramuscular depot, supporting weekly or biweekly dosing.
Approximately 50-80% renal as metabolites, 10-20% fecal; less than 1% unchanged.
Primarily renal as metabolites; approximately 50-60% of a dose is excreted in urine within 96 hours, with less than 5% as unchanged drug. Biliary/fecal excretion accounts for approximately 30-40%.
Category C
Category D/X
Progestin
Progestin
"Hydroxyprogesterone caproate may decrease the cardiotoxic activities of Acetyldigitoxin."