Ganirelix Acetate reduces certain hormones in the body, including estrogen.

Ganirelix Acetate is used with other medicines to treat infertility in women.

Ganirelix Acetate may also be used for purposes not listed in this medication guide.

Tell your doctor if you have a severe or active allergy.

Ganirelix Acetate is injected under the skin, usually once daily for several days in a row during certain phases of your fertility treatment cycle.

Prepare an injection only when you are ready to give it. Read and follow all Instructions for Use. Ask your doctor or pharmacist if you need help.

Do not reuse a needle or syringe. Place them in a puncture-proof "sharps" container and dispose of it following state or local laws. Keep out of the reach of children and pets.

Your blood may need to be tested often. Remain under the care of a doctor while using Ganirelix Acetate.

Store the prefilled syringe at room temperature, away from heat, moisture and light.

Throw away a prefilled syringe after one use, even if there is still medicine left inside.

You should not use Ganirelix Acetate Acetate if you are allergic to Ganirelix Acetate or similar medications such as leuprolide, goserelin, or nafarelin.

Tell your doctor if you are allergic to latex rubber, or if you have a severe or active allergy.

May cause birth defects. Do not use if you are pregnant. You may need to have a negative pregnancy test before starting this treatment. Tell your doctor if you become pregnant.

You should not breastfeed while using Ganirelix Acetate.

Call your doctor for instructions if you miss a dose.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Some women using Ganirelix Acetate Acetate develop ovarian hyperstimulation syndrome (OHSS), a potentially life-threatening condition. Call your doctor right away if you have symptoms of OHSS:

• stomach pain, bloating, nausea, vomiting, diarrhea;

• rapid weight gain, especially in your face and midsection;

• little or no urination; or

• pain when you breathe, rapid heart rate, feeling short of breath (especially when lying down).

Common side effects of Ganirelix Acetate may include:

• stomach pain;

• headache;

• vaginal bleeding; or

• OHSS.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Other drugs may affect Ganirelix Acetate, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all other medicines you use.