ganirelix: prescribing and clinical use
Focused clinical detail for use alongside current product information, local policy and patient-specific assessment.
ganirelix: clinical details
Prescribing considerations
- Initiation and supervision should be by a specialist experienced in infertility treatment.
- Treatment is not advised in severe allergic conditions.
- Safety and efficacy have not been established in women weighing under 50 kg or over 90 kg.
- OHSS is an intrinsic risk of gonadotropin stimulation rather than a ganirelix-specific effect.
Contraindications and cautions
- Hypersensitivity to ganirelix, an excipient, GnRH or another GnRH analogue.
- Moderate or severe renal impairment.
- Moderate or severe hepatic impairment.
- Pregnancy or breastfeeding.
Monitoring
- Assess ovarian response using follicle number and size, with hormonal assessment where appropriate.
- Monitor for immediate or delayed hypersensitivity, including after the first administration.
- Monitor for OHSS during and after ovarian stimulation.
- Confirm an intrauterine pregnancy early because ART populations may have increased ectopic-pregnancy risk.
Clinical pharmacology
Ganirelix is a synthetic peptide GnRH receptor antagonist that rapidly, profoundly and reversibly suppresses endogenous gonadotropins without the initial stimulation associated with GnRH agonists. It is absorbed rapidly after subcutaneous administration and broken down into small peptide fragments.
Formulation and product differences
- Clear, colourless aqueous solution in a single-use pre-filled glass syringe with a fixed stainless-steel needle.
- Contains mannitol, glacial acetic acid, water for injections and sodium hydroxide for pH adjustment; essentially sodium-free.
- Do not freeze. Keep in the original packaging to protect it from light.
ganirelix preparations and strengths
Injection
Route: Parenteral
Strengths: 0.25 mg/0.5 mL
ganirelix interactions
Formal interaction studies have not been performed. Tell the fertility team about all medicines, supplements and herbal products.
Histamine-releasing medicines
An interaction cannot be excluded; the fertility specialist should review concurrent treatment.
Sources
These sources were used to prepare and review this medicine page.
Prepared and reviewed by the iatroX editorial team.