Fyremadel

Generic name:ganirelix acetate
Dosage form: injection, solution
Drug class:Gonadotropin-releasing hormone antagonists

Medically reviewed by Drugs.com. Last updated on Mar 1, 2022.

FOR SUBCUTANEOUS USE ONLY

Rx only

Fyremadel Description

Fyremadel (ganirelix acetate) injection is a synthetic decapeptide with high antagonistic activity against naturally occurring gonadotropin-releasing hormone (GnRH). Ganirelix acetate is derived from native GnRH with substitutions of amino acids at positions 1, 2, 3, 6, 8, and 10 to form the following molecular formula of the peptide: N-acetyl-3-(2-naphthyl)-D-alanyl-4-chloro-D-phenylalanyl-3-(3-pyridyl)-D-alanyl-L-seryl-L-tyrosyl-N9,N10-diethyl-D-homoarginyl-L-leucyl-N9,N10-diethyl-L-homoarginyl-L-prolyl-D-alanylamide acetate. The molecular weight for ganirelix acetate is 1570.4 as an anhydrous free base. The structural formula is as follows:

Ganirelix Acetate

Fyremadel (ganirelix acetate) injection is supplied as a colorless, sterile, ready-to-use, aqueous solution intended for SUBCUTANEOUS administration only. Each single-dose, sterile, prefilled syringe contains 250 mcg/0.5 mL of ganirelix acetate, 0.1 mg glacial acetic acid, 23.5 mg mannitol, and water for injection adjusted to pH 5 with acetic acid and/or sodium hydroxide.

Fyremadel - Clinical Pharmacology

The pulsatile release of GnRH stimulates the synthesis and secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). The frequency of LH pulses in the mid and late follicular phase is approximately 1 pulse per hour. These pulses can be detected as transient rises in serum LH. At midcycle, a large increase in GnRH release results in an LH surge. The midcycle LH surge initiates several physiologic actions including: ovulation, resumption of meiosis in the oocyte, and luteinization. Luteinization results in a rise in serum progesterone with an accompanying decrease in estradiol levels.

Ganirelix acetate acts by competitively blocking the GnRH receptors on the pituitary gonadotroph and subsequen...