Zoladex 3.6 mg Injection Injection (Goserelin) — Uses, Dosage & NAFDAC

Who is this for?

What is this drug?

Goserelin (commonly known as Zoladex in Nigeria) is a hormone-blocking injection that works by telling your brain to stop producing certain sex hormones like estrogen in women and testosterone in men, which can fuel the growth of some cancers and other conditions.

What is it used for?

Prostate cancer (men)breast cancer (women)endometriosis (painful periods caused by womb lining growing outside the womb)fibroids (growths in the womb)thinning the womb lining before surgery

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Cancer Treatment Fertility & Infertility Prostate & Men's Health

How it works

Binds to GnRH receptors in the anterior pituitary, causing initial stimulation followed by prolonged suppression of gonadotropin (LH and FSH) secretion, thereby reducing testosterone and estrogen production.

Prescription Required

You need a doctor's prescription to buy this drug.

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How to take this drug

This is not a drug you take at home by yourself. A doctor or nurse will inject a small implant under the skin of your lower belly. The Zoladex 3.6 mg is given once every 28 days (monthly), and the Zoladex LA 10.8 mg is given once every 12 weeks (about 3 months). You must keep all your appointment dates to get the next dose on time.

What if I Miss a Dose?

If you miss your scheduled injection appointment, contact your doctor or hospital as soon as possible to reschedule. Do not wait until your next planned visit — getting the injection late can reduce how well the treatment works.

What to watch out for

Only get this injection from a hospital, clinic, or qualified healthcare provider — never buy or accept it from unregistered sellers. Make sure the packaging is sealed and not expired before the injection is given. Do not stop your treatment schedule without talking to your doctor, even if you feel better, as the condition may come back.

Common Side Effects

Hot flashes (sudden feeling of heat in the body)
sweating
reduced interest in sex
mood swings or feeling emotional
pain or slight swelling where the injection was given

Serious Side Effects

Difficulty breathing
swelling of the face or throat (allergic reaction) — go to the hospital immediately. Bone pain that suddenly gets worse in the first few weeks of treatment (especially in prostate cancer patients) — tell your doctor right away. Signs of heart problems like chest pain or unusual shortness of breath.

Drug Interactions

Goserelin may affect how drugs that change heart rhythm work (like some malaria or infection drugs), so tell your doctor about all medicines you are taking. There are no major food interactions, but avoid excessive alcohol as it can worsen mood changes and hot flashes.

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Pregnancy & Breastfeeding Warning

Goserelin is NOT safe during pregnancy or breastfeeding — it can cause serious harm to the unborn baby, and women of childbearing age must use non-hormonal contraception (like condoms) during treatment.

Who Should NOT Take This

People who are allergic to goserelin or any ingredient in Zoladex
pregnant or breastfeeding women
women with unexplained vaginal bleeding that a doctor has not checked
and anyone with a known allergy to similar hormone-blocking drugs (GnRH analogues).

How to Store

The injection should be stored below 25°C, so it needs to be kept in a cool, dry place away from direct sunlight and heat. In Nigeria's hot weather, hospital pharmacies usually store it in the fridge. Keep out of reach of children.

For information only — not medical advice. Always talk to a doctor or pharmacist before changing your medication.

Zoladex 3.6 mg Injection