Antagon (Subcutaneous)
Generic name:ganirelix (subcutaneous route) [ ga-ni-REL-ix ]
Drug class:Gonadotropin-releasing hormone antagonists
Medically reviewed by Drugs.com. Last updated on May 5, 2022.
The Antagon brand name has been discontinued in the U.S. If generic versions of this product have been approved by the FDA, there may be generic equivalents available.
Commonly used brand name(s)
In the U.S.
- Antagon
Available Dosage Forms:
- Solution
Therapeutic Class: Endocrine-Metabolic Agent
Pharmacologic Class: Luteinizing Hormone Releasing Hormone Antagonist
Uses for Antagon
Ganirelix injection is used as a fertility medicine to prevent premature luteinizing hormone (LH) surges or ovulation in women undergoing fertility treatment of controlled ovarian hyperstimulation. It may also help reduce the need for follicle-stimulating hormone (FSH), which is also needed for ovulation. Ganirelix is a gonadotropin-releasing hormone (GnRH) antagonist.
This medicine is available only with your doctor's prescription.
Before using Antagon
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Allergies
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Pediatric
No information is available on the relationship of age to the effects of ganirelix injection in the pediatric population. Safety and efficacy have not been established.
Geriatric
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of ganirelix injection in the elderly.
Breastfeeding
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.
Interactions with food/tobacco/alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
