Metopirone

Metyrapone, the active ingredient in Metopirone, is a 11-beta-hydroxylase inhibitor presented as an oral tablet for oral use. It is employed in diagnostic testing for Cushing’s syndrome, treatment of adrenal insufficiency, and management of congenital adrenal hyperplasia in selected patients.

GNH USA supplies Metopirone as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, providing reliable sourcing, regulatory support and consistent quality for endocrine therapeutics. The company’s distribution network spans Europe, Asia, Africa and the Americas, ensuring timely delivery under appropriate storage conditions.

Metopirone (metyrapone) acts as a cortisol synthesis inhibitor, targeting the adrenal steroidogenesis pathway, and is employed in several endocrine conditions where modulation of cortisol production is required. - Cushing's syndrome: assists in diagnostic testing by evaluating adrenal cortisol production and confirming hypercortisolism. - Adrenal insufficiency: helps restore cortisol levels when endogenous synthesis is inadequate, supporting stress response and metabolic balance. - Congenital adrenal hyperplasia: used to control excess androgen production by reducing cortisol synthesis, aiding hormonal regulation.

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

Common Side Effects: - Nausea: mild gastrointestinal upset. - Headache: transient cranial discomfort. - Dizziness: sensation of lightheadedness. - Fatigue: general tiredness.

Serious or Rare Side Effects: - Adrenal crisis: severe cortisol deficiency causing hypotension and shock. - Acute liver injury: marked elevation of hepatic enzymes. - Severe hypertension: rapid and dangerous rise in blood pressure.

When prescribing Metopirone, clinicians should consider several precautionary measures to ensure safe use. - Monitor cortisol levels: assess adrenal function before and during therapy. - Adjust dose in hepatic impairment: reduce dosage if liver function is compromised. - Caution in cardiovascular disease: watch for hypertension or fluid retention. - Evaluate electrolyte status: check potassium and sodium concentrations regularly. - Avoid abrupt discontinuation: taper gradually to prevent adrenal insufficiency. - Store at ambient temperature: keep below 25 °C in original packaging, protect from moisture.

Metopirone can interact with other medicines, influencing its efficacy or safety.

Major Interactions (Avoid): - Ketoconazole: combined inhibition of steroidogenesis may cause severe cortisol deficiency. - Rifampicin: strong enzyme induction can markedly reduce metyrapone plasma levels.

Moderate Interactions (Monitor Closely): - Antihypertensives: metyrapone‑induced hypertension may diminish blood pressure control. - Oral contraceptives: altered steroid metabolism can affect hormonal balance. - Antidiabetic agents: hyperglycemia risk may be enhanced, requiring glucose monitoring.