Comparative Pharmacology
Head-to-head clinical analysis: FOLLISTIM versus PERGONAL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: FOLLISTIM versus PERGONAL.
FOLLISTIM vs PERGONAL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Follistim (follitropin beta) is a recombinant follicle-stimulating hormone (FSH) that binds to FSH receptors on ovarian granulosa cells and testicular Sertoli cells, stimulating follicular development and steroidogenesis.
Pergonal (menotropins) is a purified preparation of gonadotropins (follicle-stimulating hormone, FSH, and luteinizing hormone, LH) extracted from postmenopausal urine. It stimulates ovarian follicular growth and maturation in women and spermatogenesis in men by acting on specific gonadal receptors.
Subcutaneous: 75-300 IU once daily for 7-21 days, adjusted based on response. Intramuscular: 75-150 IU once daily for 7-21 days.
Intramuscular administration: 75 IU daily for 7-12 days, then 5,000-10,000 IU hCG 24 hours after last dose.
None Documented
None Documented
The terminal elimination half-life ranges from 16 to 24 hours (mean ~19 hours) following subcutaneous administration. In patients with renal impairment, half-life may be prolonged, necessitating dose adjustment.
Terminal elimination half-life approximately 24-36 hours; clinical context: supports daily dosing in ovulation induction protocols.
Primarily renal; approximately 70% of the dose is excreted unchanged in urine. A minor fraction (less than 5%) appears in feces via biliary elimination. The remainder is metabolized via hepatic pathways to inactive metabolites.
Primarily renal: 70-80% as unchanged drug and metabolites within 24 hours; biliary/fecal excretion accounts for <5%.
Category C
Category C
Gonadotropin
Gonadotropin