Metyrapone is a diagnostic drug that inhibits 11β-hydroxylase enzyme in the adrenal cortex hence, consequently limiting cortisol and corticosterone synthesis resulting to increase adrenocorticotropic hormone (ACTH) production, 17-ketogenic steroids [17-KGS]), and  increasing cortisol precursors in the urine (17-hyroxycorticosteroids [17-OHCS].

Use this medication precisely as recommended by your physician. Follow the prescription of your doctor carefully.

The medication dose your physician has given is based on your condition, other medications or food supplements you may take, and your reaction to treatment. To diminish your risks for adverse effects, don’t increase your dosage, take it regularly, or take it as instructed by your physician. Adverse events may still happen even at usual prescription dosages.

If your physician requests you to use this drug consistently, use it regularly to get the most benefits from it. To make you remember it better, take it at a fixed time every day.

Your doctor may need to modify your dosages to ease your symptoms or if you develop adverse reactions.

If you have any inquiries with regards to information, ask your physician or pharmacist.

Metyrapone is used in the following conditions:

  • Resistant oedema
  • Cushing’s syndrome
  • Diagnostic testing which is used in distinguishing pituitary from ectopic ACTH production in individuals with ACTH-dependent Cushing’s disease.

This medicine may be recommended for different uses. Approach your physician or pharmacist for more information.

Do not use Metyrapone in people with the following conditions:

  • Adrenal cortical insufficiency

Metyrapone may have the following side effects:

  • Nausea
  • Vomiting
  • Rash
  • Hypotension
  • Hypertension
  • Opportunistic infections
  • Hirsutism
  • Abdominal pain/discomfort
  • Acute adrenal insufficiency
  • CNS depression 
  • Headache

Keep in mind that your physician has recommended this drug since he or she has known that the advantage to you is more noteworthy than the risk of adverse reactions. Many individuals utilizing this medicine don’t have serious side effects. 

A serious allergy to this medication is uncommon. In any case, seek emergency medical help if you see any manifestations of a serious allergic response, including a rash, tingling or swelling particularly of the face or tongue or throat, dizziness or difficulty in breathing.

This is not a complete list of side effects. If you see other effects not recorded above, contact your physician or pharmacist.

Take extra caution in patients with the following medical conditions:

  • Reduced adrenal secretory capacity
  • Gross hypopituitarism
  • Children and pregnant women
  • Ectopic Cushing’s syndrome
  • Hepatic impairment
  • Lactation
  • Patient with hypo-or hyperthyroidism

Prior to taking this medicine, tell your physician or pharmacist if you are allergic to it, or if you have some other hypersensitivities. This drug may contain inert ingredients which can cause unfavorable side effects or different issues. Talk with your pharmacist for more information.


Metyrapone may interact with the following medicines:

  • Barbiturates
  • Amitriptyline
  • Chlorpromazine
  • Corticosteroids
  • Phenytoin
  • Acetaminophen
  • Cyproheptadine

Inform your physician about the drugs you take including over-the-counter medications, prescribed drugs, supplements and vitamins.

This is not a complete list of drug interactions. Approach your physician or pharmacist for more details.

The effects of certain medications can change if you consume different medications or herbal products simultaneously. This can build your risk for side effects or maycause your drugs not to work effectively. These interactions are conceivable, yet don’t generally happen. Your physician or pharmacist can prevent or oversee interactions by changing how you utilize your prescriptions or by close checking.

While utilizing this drug, don’t start, stop, or change the dose of other medicines you are using without your physician’s advice. 

Symptoms of overdose may include the following: 

  • Epigastric pain
  • Diarrhea)
  • Acute adrenocortical insufficiency
  • Vomiting
  • Hypochloraemia
  • Nausea
  • Cardiac arrhythmias
  • Hypotension
  • Confusion
  • Weakness
  • Impairment of consciousness
  • Hyponatremia
  • Hyperkalaemia
  • Dehydration
  • Anxiety

Seek medical help immediately.

Available Brands:

  • Metopirone

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