Metopirone (metyrapone) is a medication used to test how well your pituitary gland works. This can help your healthcare provider diagnose you with conditions, like Cushing Syndrome or hypopituitarism. Metopirone (metyrapone) can be taken as a single-dose (overnight test), but some people might be required to do a 6-day test under medical supervision.
Metopirone (metyrapone) is a diagnostic agent. It helps your healthcare provider diagnose certain health conditions by testing how well your pituitary gland works. Metopirone (metyrapone) works by preventing your adrenal gland from making cortisol, a stress hormone. In response to this drop in cortisol, your pituitary gland should make adrenocorticotropic hormone (ACTH), which results in certain steroids being released. Your provider will then measure the levels of these steroids in either your blood or urine to determine if your hormone-producing glands are working properly.
The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Contact your healthcare provider immediately if you experience any of the following.
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Rare (with long-term use)
Irregular heartbeat
Check with your doctor as soon as possible if any of the following side effects occur:
Less common
Skin rash
Rare (usually with long-term use)
Enlargement of clitoris
muscle cramps or pain
sore throat or fever
swelling of feet or lower legs
unusual bleeding or bruising
unusual tiredness or weakness
weight gain (rapid)
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
Metopirone (metyrapone) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
Metopirone (metyrapone) lowers the amount of cortisol your body makes. Sometimes, this can cause an acute adrenal crisis, especially if your adrenal gland doesn't work normally. An adrenal crisis happens when your cortisol levels are too low. This reaction can be life-threatening. If you experience stomach-area pain, confusion, dizziness, weakness, headache, fever, nausea, vomiting, fast heart rate, or fast breathing after taking Metopirone (metyrapone), contact your healthcare provider right away.
It's possible to take too much Metopirone (metyrapone), resulting in an overdose of the medication. Certain medications, like insulin or oral medications for high blood sugar, can make your reaction to an overdose worse. If you experience nausea, vomiting, diarrhea, anxiety, confusion, weakness, fainting, irregular heartbeat, or low blood pressure after taking Metopirone (metyrapone), get medical help right away. Make sure you take this medication exactly as instructed by your healthcare provider.
| Dosage | Quantity | Price as low as | Price per unit |
|---|---|---|---|
| 250mg | 180 capsules | $11,418.44 | $63.44 |
Metopirone (metyrapone) can be taken as a single-dose test or a multiple-dose test. Your healthcare provider will determine which test is most appropriate for you.
Single-dose test
Multiple-dose test
Adults: The typical dose is to take 750 mg by mouth every 4 hours for 6 doses with milk or a snack.
Children: The typical dose is 15 mg/kg by mouth every 4 hours for 6 doses with milk or a snack. The minimum dose is 250 mg.
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. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Contraindications are specific health conditions or situations in which a person should not take a medication due to safety concerns. If you have any of the following conditions or if any of the following apply to you, let your healthcare provider know because Metopirone (metyrapone) will not be safe for you to take.
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If your healthcare provider has prescribed the single-dose test, you can do this test at a clinic without staying overnight at the hospital. You'll take one dose of Metopirone at midnight with yogurt or milk. The next morning, your provider will draw your blood so that your response can be checked. You'll also receive a dose of cortisone to prevent any serious reactions from the medication. For the multiple-dose test, you'll need to stay at the hospital for 6 days. On day 1, your provider will take a 24-hour urine sample. On day 2, you'll be given a dose of ACTH and another 24-hour urine sample will be taken (this is to make sure the Metopirone dose is safe for you to take). On days 3 and 4, you will have a rest period. And on day 5, Metopirone will be given every 4 hours with food or milk for 6 doses. On day 6, your provider will take another 24-hour urine sample to determine your response.
No, Metopirone isn't a steroid. It works just as well as high-dose steroid tests for diagnosing Cushing Syndrome. So Metopirone might be a good option for those wanting to avoid steroid use.
Your provider will have to send a prescription for Metopirone to a specific pharmacy, which will deliver the medication to your home. You won't be able to find Metopirone at a regular retail pharmacy.
Yes, the single-dose Metopirone test is typically taken at home and you'll go to your provider's office the next morning for a blood test. But if your provider thinks that your adrenal glands don't work normally, you might have to go to a clinic or hospital and take the single-dose test under medical supervision. This is to keep you safe from potentially having a dangerous reaction to the medication. The multiple-dose test is done in a healthcare setting because 24-hour urine samples must be collected on days 1, 2, and 6.
Yes. Phenytoin (Dilantin), medications containing estrogen, and medications that affect your pituitary or adrenal glands can change the results of your Metopirone test. Be sure to tell your provider about all of the medications you take before starting this medication. Metopirone might also cause acetaminophen (Tylenol) to be broken down more slowly in your body, which can result in harm from too much acetaminophen. Ask your provider when it's safe to take Tylenol if you have taken or are going to take Metopirone.