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Ganirelix Acetate


Ganirelix Acetate is an injectable gonadotropin releasing hormone with specific antagonistic (blocking) activity. It is indicated for the inhibition of premature LH (leuteinizing hormone) surges in women undergoing controlled ovarian hyperstimulation. Ganirelix Acetate is available as a prefilled syringe containing 250mcg/0.5ml.

How It Works:

Ganirelix Acetate is an injectable medication administered subcutaneously. Antagon is administered once daily. It is initiated a few days after FSH (follicle stimulating hormone) therapy and should be continued until the day of HCG administration. Ganirelix Acetate works immediately by suppressing LH and FSH secretion. This allows for eggs to reach the level of development needed for fertilization.

Potential Side Effects:

Side effects may occur including: abdominal pain, headache, vaginal bleeding, nausea, and injection site reaction.

If you experience an allergic reaction: difficulty breathing; closing of the throat; swelling of the lips, tongue or face; or hives; seek emergency medical attention immediately. And if any time you experience: pain, warmth, redness, numbness, or tingling in an arm or leg; confusion, severe dizziness or severe headache, seek medical attention immediately.

PLEASE NOTE: If these or any other side effects occur, contact your physician.


Ganirelix can be stored at room temperature.

Injection Instructions

For more product details or more detailed injection information please see
Health Banks

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