Skip to Content

The originating document has been archived. We cannot confirm the completeness, accuracy and currency of the content.

Follicle stimulating hormone / ganirelix Side Effects

Applies to follicle stimulating hormone / ganirelix: subcutaneous kit

Ovarian hyperstimulation syndrome (OHSS) is an uncommon complication of treatment with follicle stimulating hormone, ganirelix, and other fertility medications. Symptoms of OHSS include severe pelvic pain, swelling of the hands or legs, abdominal pain and swelling, shortness of breath, weight gain, low urine output, diarrhea, severe nausea, and vomiting. OHSS can be fatal. Notify your doctor immediately or seek emergency medical attention if you develop any of these symptoms.

Stop using follicle stimulating hormone and ganirelix and seek emergency medical attention or notify your doctor immediately if you experience any of the following serious side effects:

  • an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);

  • pain, warmth, redness, numbness, or tingling in an arm or leg (which may indicate a blood clot);

  • confusion, severe dizziness, or severe headache (which may indicate a blood clot in the head); or

  • difficulty breathing.

Other side effects may also occur. Notify your doctor if you experience

  • abdominal or pelvic pain, tenderness, pressure, or swelling (potential symptoms of ovarian enlargement);

  • nausea, vomiting, diarrhea, or flatulence (gas);

  • fever or chills;

  • headache;

  • dizziness;

  • rapid pulse or heart rate;

  • muscle or joint weakness or aching;

  • breast tenderness;

  • spotting or menstrual changes;

  • pain, swelling, or irritation at the injection site; or

  • dry skin, a rash, or hair loss.

Treatment with follicle stimulating hormone and ganirelix increases the likelihood of multiple births. Multiple births carry additional risk both for the mother and for fetuses. Discuss the risk of multiple births with your healthcare provider.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

Some side effects of follicle stimulating hormone / ganirelix may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

More about follicle stimulating hormone/ganirelix

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.