GNH USA

Europe — EMA

Metopirone (Metyrapone)

GNH USA supplies Metopirone (Metyrapone), a 11β-hydroxylase inhibitor for diagnostic testing of adrenal insufficiency and off‑label Cushing's syndrome.

Metyrapone

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What is Metyrapone?

Metyrapone, the active ingredient in Metopirone, is a 11β‑hydroxylase inhibitor presented as an oral tablet for oral administration. It blocks a key enzyme in cortisol synthesis, which is useful in diagnostic testing for adrenal insufficiency and, in some settings, for managing Cushing’s syndrome. The medication is prescribed by qualified healthcare professionals.

GNH USA supplies Metopirone as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, transplant centres, oncology centres, pharmacies and clinics worldwide, with a focus on quality assurance and regulatory compliance.

What is Metyrapone used for?

Metyrapone is used in clinical practice and research to evaluate or modulate adrenal steroidogenesis. - Adrenal insufficiency (diagnostic testing): Helps assess cortisol production by temporarily inhibiting cortisol synthesis, allowing measurement of ACTH response. - Cushing’s syndrome (off‑label use): May be employed to reduce cortisol levels in patients where surgery or other therapies are unsuitable. - Endocrine research (pharmacologic challenge): Used as a tool to study adrenal axis dynamics in clinical investigations.

What are the side effects of Metyrapone?

Metyrapone may cause a range of adverse reactions, varying from mild to serious.

Common Side Effects: - Nausea: mild stomach upset often reported. - Dizziness or light‑headedness: may occur especially when standing. - Headache: transient cranial discomfort. - Fatigue: general tiredness or weakness.

Serious or Rare Side Effects: - Hypertension: sudden increase in blood pressure requiring medical attention. - Adrenal crisis: severe cortisol deficiency leading to shock‑like symptoms. - Allergic reaction: rash, itching, swelling, or difficulty breathing.

What precautions apply to Metyrapone?

When prescribing Metopirone, clinicians should consider several safety measures. - Dose adjustment: required in hepatic impairment. - Monitor: blood pressure and electrolyte levels during therapy. - Avoid: use in patients with uncontrolled hypertension. - Caution: may exacerbate hypokalemia; check potassium. - Pregnancy and lactation: safety not established; weigh risks. - Store at ambient temperature: keep in original container, protect from moisture and light.

What does Metyrapone interact with?

Metyrapone can interact with other medicines; awareness of interaction severity is important.

Major Interactions (Avoid): - Ketoconazole: combined CYP inhibition may increase toxicity. - Rifampin: enzyme induction reduces metyrapone effectiveness. - Oral contraceptives: may alter steroid metabolism.

Moderate Interactions (Monitor Closely): - Antihypertensives: blood pressure changes may require dose adjustment. - Diuretics: risk of electrolyte imbalance, especially potassium. - Antidepressants (SSRIs): possible additive effects on cortisol axis.

Frequently asked questions

What is Metopirone used for?+
Metopirone, containing the active ingredient metyrapone, is primarily employed for diagnostic testing of adrenal insufficiency by temporarily inhibiting cortisol synthesis. In some clinical settings it is used off‑label to lower cortisol levels in patients with Cushing’s syndrome when other therapies are unsuitable. It also serves as a pharmacologic tool in research to study adrenal axis function.
How does Metyrapone work?+
Metyrapone works by selectively blocking the enzyme 11β‑hydroxylase (CYP11B1) in the adrenal cortex. This inhibition prevents the final step of cortisol production, leading to reduced cortisol output, a rise in ACTH, and accumulation of steroid precursors. The resulting hormonal changes are useful for both diagnostic assessment and, in certain cases, therapeutic reduction of cortisol.
What is the usual dose of Metopirone?+
The dosage of Metopirone is individualized and must be determined by a qualified prescriber based on the specific clinical indication, patient characteristics, and laboratory monitoring. Physicians consider factors such as the purpose of testing, severity of disease, and concurrent medications when setting the appropriate dose.
Is Metopirone safe in pregnancy or breastfeeding?+
Safety data for Metopirone during pregnancy and lactation are limited, and the product’s pregnancy category has not been established. Healthcare providers should evaluate the potential benefits against possible risks before prescribing to pregnant or nursing women, and consider alternative diagnostic or therapeutic options when appropriate.
How do I order Metopirone from GNH USA?+
To request Metopirone, submit an enquiry on the product page at gnh-usa.com, specifying the required quantity. GNH USA works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any cold‑chain requirements), and assistance with import documentation.
How does Metopirone compare with the main alternative drug or class?+
The most common alternative class for adrenal steroidogenesis inhibition includes ketoconazole and levoketoconazole. Compared with ketoconazole, metyrapone has a more selective mechanism targeting 11β‑hydroxylase, which may result in a different side‑effect profile, particularly less hepatotoxicity. However, ketoconazole may provide broader inhibition of steroid synthesis, and the choice depends on clinical goals, patient tolerance, and regulatory approvals.
How should Metopirone be stored and handled?+
Metopirone tablets should be stored at ambient temperature, preferably below 25 °C, in the original packaging to protect them from moisture and light. Keep the product out of reach of children and avoid storing in areas with high humidity or direct sunlight to maintain potency.
How is Metopirone administered?+
Metopirone is taken orally, usually as a tablet swallowed whole with a glass of water. The prescriber will indicate whether the dose should be taken with food or on an empty stomach, and the timing relative to other medications may be specified to optimize absorption and minimize interactions.
What are the most serious risks to watch for while taking Metopirone?+
Serious risks associated with Metopirone include the development of hypertension, adrenal crisis due to abrupt cortisol deficiency, and severe allergic reactions such as rash, swelling, or breathing difficulties. Patients should seek immediate medical attention if they experience sudden high blood pressure, signs of shock, or any signs of an allergic response.
Who should not use Metopirone?+
Metopirone is contraindicated in individuals with known hypersensitivity to metyrapone or any of its excipients, and in patients with uncontrolled hypertension. Caution is also advised for those with severe hepatic impairment, electrolyte disturbances, or active infections, as the drug may exacerbate these conditions. A prescriber should evaluate each patient’s medical history before initiating therapy.
Information provided on this page is for educational use by procurement and clinical professionals. Always consult a licensed healthcare provider for medical advice and prescribing decisions. GNH USA supplies this product subject to applicable regulatory and licensing requirements.
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Product details

Drug
Metyrapone
Route
Oral Use
Manufacturer
Esteve Pharmaceuticals, S.A.
Origin
EU

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