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Drugs A–Z

Ganirelix Acetate

Ganirelix Acetate is a prescription medicine. The sections below reproduce one FDA label for it, named under "Label". Products in other forms, strengths or from other makers have their own labels, which can differ.

Type
Prescription only (Rx)
Taken
Subcutaneous
Label
Mullan Pharmaceutical Inc., revised May 11, 2026 · full label on DailyMed
Generic
FDA-approved (6 companies) · details

What it is used for

Ganirelix Acetate Injection is indicated for the inhibition of premature LH surges in women undergoing controlled ovarian hyperstimulation.

Who should not take it (contraindications)

Ganirelix Acetate Injection is contraindicated under the following conditions: Known hypersensitivity to Ganirelix Acetate or to any of its components. Known hypersensitivity to GnRH or any other GnRH analog. Known or suspected pregnancy (see PRECAUTIONS ).

Warnings

Ganirelix Acetate Injection should be prescribed by physicians who are experienced in infertility treatment. Before starting treatment with Ganirelix Acetate, pregnancy must be excluded. Safe use of Ganirelix Acetate during pregnancy has not been established (see CONTRAINDICATIONS and PRECAUTIONS ).

Precautions

General Special care should be taken in women with signs and symptoms of active allergic conditions. Cases of hypersensitivity reactions (both generalized and local), including anaphylaxis (including anaphylactic shock), angioedema and urticaria, have been reported with Ganirelix Acetate, as early as with the first dose, during post-marketing surveillance (see ADVERSE REACTIONS ). If a hypersensitivity reaction is suspected, Ganirelix Acetate should be discontinued and appropriate treatment administered. In the absence of clinical experience, Ganirelix Acetate treatment is not advised in women with severe allergic conditions. Packaging components of this product are free from dry natural rubber/latex. Information for Patients Prior to therapy with Ganirelix Acetate Injection, patients should be informed of the duration of treatment and monitoring procedures that will be required. The risk of possible adverse reactions should be discussed (see ADVERSE REACTIONS ). Ganirelix Acetate should not be prescribed if the patient is pregnant. Laboratory Tests A neutrophil count ≥ 8.3 ( × 10 9 /L) was noted in 11.9% (up to 16.8 × 10 9 /L) of all subjects treated within the adequate and well-controlled clinical trials. In addition, downward shifts within the Ganirelix Acetate Injection group were observed for hematocrit and total bilirubin. The clinical significance of these findings was not determined. Drug Interactions No formal drug-drug interaction studies have been performed. Carcinogenesis and Mutagenesis, Impairment of Fertility Long-term toxicity studies in animals have not been performed with Ganirelix Acetate Injection to evaluate the carcinogenic potential of the drug. Ganirelix Acetate did not induce a mutagenic response in the Ames test (S. typhimurium and E. coli ) or produce chromosomal aberrations in in vitro assay using Chinese Hamster Ovary cells. Pregnancy Ganirelix Acetate Injection is contraindicated in pregnant women. When administered from Day 7 to near term to pregnant rats and rabbits at doses up to 10 and 30 mcg/day (approximately 0.4 to 3.2 times the human dose based on body surface area), Ganirelix Acetate increased the incidence of litter resorption. There was no increase in fetal abnormalities. No treatment-related changes in fertility, physical, or behavioral characteristics were observed in the offspring of female rats treated with Ganirelix Acetate during pregnancy and lactation. The effects on fetal resorption are logical consequences of the alteration in hormonal levels brought about by the antigonadotropic properties of this drug and could result in fetal loss in humans. Therefore, this drug should not be used in pregnant women (see CONTRAINDICATIONS ). Nursing Mothers Ganirelix Acetate Injection should not be used by lactating women. It is not known whether this drug is excreted in human milk. Geriatric Use Clinical studies with Ganirelix Acetate Injection did not include a sufficient number of subjects aged 65 and over.

Side effects (adverse reactions)

The safety of Ganirelix Acetate Injection was evaluated in two randomized, parallel-group, multicenter controlled clinical studies. Treatment duration for Ganirelix Acetate ranged from 1 to 14 days. Table IV represents adverse events (AEs) from first day of Ganirelix Acetate administration until confirmation of pregnancy by ultrasound at an incidence of ≥ 1% in Ganirelix Acetate-treated subjects without regard to causality. TABLE IV: Incidence of common adverse events (Incidence ≥ 1% in Ganirelix Acetate-treated subjects). Completed controlled clinical studies (All-subjects-treated group). Adverse Events Occurring in ≥ 1% Ganirelix Acetate N=794 % (n) Abdominal Pain (gynecological) 4.8 (38) Death Fetal 3.7 (29) Headache 3.0 (24) Ovarian Hyperstimulation Syndrome 2.4 (19) Vaginal Bleeding 1.8 (14) Injection Site Reaction 1.1 (9) Nausea 1.1 (9) Abdominal Pain (gastrointestinal) 1.0 (8) During post-marketing surveillance, rare cases of hypersensitivity reactions, including anaphylaxis (including anaphylactic shock), angioedema and urticaria have been reported with Ganirelix Acetate, as early as with the first dose (see PRECAUTIONS ). Congenital Anomalies An observational study in more than 1000 newborns compared the incidence of congenital anomalies in newborns of women administered Ganirelix Acetate to historical controls of a GnRH agonist. This study demonstrated that the incidence of congenital anomalies in children born after COH treatment in women using Ganirelix Acetate was comparable with that reported after a COH treatment cycle using a GnRH agonist. The incidence of congenital malformations after some Assisted Reproductive Technologies (ART) [specifically in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI)] may be slightly higher than after spontaneous conception. This slightly higher incidence is thought to be related to differences in parental characteristics (e.g., maternal age, maternal and paternal genetic background, sperm characteristics) and to the higher incidence of multi-fetal gestations after IVF or ICSI. The causal relationship between these congenital anomalies and Ganirelix Acetate Injection is unknown. To report SUSPECTED ADVERSE EVENTS, contact Mullan Pharmaceutical Inc. at +1-800-673-9839 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Drug interactions

No formal drug-drug interaction studies have been performed.

Pregnancy

Ganirelix Acetate Injection is contraindicated in pregnant women. When administered from Day 7 to near term to pregnant rats and rabbits at doses up to 10 and 30 mcg/day (approximately 0.4 to 3.2 times the human dose based on body surface area), Ganirelix Acetate increased the incidence of litter resorption. There was no increase in fetal abnormalities. No treatment-related changes in fertility, physical, or behavioral characteristics were observed in the offspring of female rats treated with Ganirelix Acetate during pregnancy and lactation. The effects on fetal resorption are logical consequences of the alteration in hormonal levels brought about by the antigonadotropic properties of this drug and could result in fetal loss in humans. Therefore, this drug should not be used in pregnant women (see CONTRAINDICATIONS ).

Breastfeeding

Ganirelix Acetate Injection should not be used by lactating women. It is not known whether this drug is excreted in human milk.

Use in older adults

Clinical studies with Ganirelix Acetate Injection did not include a sufficient number of subjects aged 65 and over.

Is there a generic Ganirelix Acetate?

Yes. The FDA has approved generic Ganirelix Acetate from 6 companies whose approvals are active. The earliest of these was approved in 2018.

An FDA approval does not always mean the generic is already in pharmacies: patent disputes and settlements can delay a launch for years. Your pharmacist can tell you whether a generic is actually available and covered by your plan.

The FDA rates these generics as therapeutically equivalent to the brand ("A" rating): same active ingredient, strength, dosage form and effect. Pharmacists can usually substitute them unless the prescriber says otherwise.

Companies with an approved generic

Amphastar Pharms Inc, Gland, Lupin, Meitheal, Qilu, Sun Pharm

Source: Drugs@FDA (via openFDA), checked October 29, 2026. Marketing status is what companies report to the FDA; whether a pharmacy stocks a product, and what your insurance covers, can differ.

Dosage:
we do not reproduce dosing instructions. The right dose depends on the person and the condition and is set by the prescriber or pharmacist. Dosage section of the full label.

Ganirelix in the news

We have not covered this medicine yet. Latest news

Recalls

  • Class II Ongoing

    Ganirelix Acetate Injection, 250 mcg/0.5mL, Single-dose Sterile Prefilled Syringe, 27 gauge by 1/2' needle, Rx only, Manufactured for: Lupin Pharmaceuticals, Inc., Naples, FL 34108, United States, Manufactured by: Lupin…

    Reason: Failed impurities/degradation specifications: out of specification results for Ganirelix acetate acrylic acid adduct impurity.

    Lupin Pharmaceuticals Inc.

    Lots, distribution and details
    Product
    Ganirelix Acetate Injection, 250 mcg/0.5mL, Single-dose Sterile Prefilled Syringe, 27 gauge by 1/2' needle, Rx only, Manufactured for: Lupin Pharmaceuticals, Inc., Naples, FL 34108, United States, Manufactured by: Lupin Limited, Nagpur – 441108, INDIA, NDC 70748-274-01
    Lots / codes
    Lot #: WB00006, Exp 12/31/2026
    Distribution
    FL, MA, MI & OH
    Quantity
    32736 vials
    Recall started
    November 13, 2025 (Voluntary: Firm initiated)
    Severity
    Could cause temporary or medically reversible health problems; serious harm is unlikely.
    FDA recall number
    D-0220-2026

Have this medicine at home? Compare the lot number and expiry date on your package with the recall. Do not stop taking a prescribed medicine on your own — stopping suddenly can be riskier than the recalled lot. Your pharmacist can check it and usually swap it for an unaffected one.

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Source: FDA structured product labeling, retrieved through openFDA. Label text is shown as published by the FDA, without editing; long sections are shortened, marked […]. openFDA data are not validated for clinical use — always check the current label and ask a doctor or pharmacist about your own treatment. Set ID 420ce739-2756-4fb4-8a4e-5fab501ab973.


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Important: this content is for informational purposes only and is not medical advice, a prescribing instruction, or a recommendation to act. Consult a licensed healthcare professional before taking any medication.

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