What it is used for
- Preventing premature ovulation during controlled ovarian stimulation
- Supporting an assisted-reproduction cycle until egg collection at the time set by the centre
How it is used
- After fertility-centre training, gently mix the powder with its supplied solvent and use it promptly as directed
- Inject it under the lower-abdominal skin at the time set by the fertility team and rotate the site
- Do not shake the solution or use it if cloudy or particulate
- Contact the centre after a missed injection and never double it or change timing yourself
- Attend every scheduled hormone test, ultrasound scan and clinical review
Possible side effects
- Redness, itching or swelling at the injection site
- Headache or nausea
- Abdominal pain or swelling from the ovarian-stimulation programme
- Rare severe allergy
Who should not use it
- Allergy to cetrorelix, related hormone medicines or any ingredient
- Pregnancy or breastfeeding
- Severe kidney or liver disease as defined by the label
Before and while using it
- Breathing difficulty, facial swelling or a widespread rash after injection needs emergency care
- Severe abdominal pain, rapid swelling, vomiting or breathlessness can indicate ovarian hyperstimulation and needs urgent contact with the centre
- Ovarian torsion, a clot or ectopic pregnancy are fertility-programme risks, and acute symptoms need assessment
- It must not be used without monitoring because incorrect timing can allow premature ovulation and affect the cycle
- Tell the centre about any previous severe allergy to fertility medicines
Medicine interactions
- Other fertility medicines form part of a coordinated protocol and must not be started or stopped yourself
- Tell the centre about every medicine and herb because interaction studies are limited
Pregnancy and breastfeeding
- It is contraindicated in pregnancy; the centre confirms the treatment stage and stops it before pregnancy progresses
- It is not used during breastfeeding because safety information is inadequate
How to store it
- Keep the pack refrigerated and protected from light, never freeze it, and use prepared solution as the leaflet directs
Get medical help straight away if
- Your face, lips or tongue swell, or you find it hard to breathe.
- You get a severe rash, blistering or peeling skin.
- A side effect worries you or doesn’t go away: contact your doctor or pharmacist.
Questions about this medicine?
Talk to a doctor by video, or send your question by text.
Source: Standard international medicine references
This guide is general information and doesn’t replace advice from your doctor or pharmacist. Don’t start, stop or change a medicine without asking them, and always read the leaflet in the pack.