Isturisa 1mg (Osilodrostat Tablet) 1mg

Isturisa 1mg is primarily used to manage conditions associated with excessive cortisol production. It is indicated for the treatment of Cushing's disease and Cushing's syndrome in adults. The medication helps to reduce the symptoms associated with these conditions by lowering cortisol levels in the body.

• Cushing's disease: Reduces cortisol levels to alleviate symptoms such as weight gain, moon face, and fatigue.
• Cushing's syndrome: Helps manage symptoms caused by prolonged exposure to high cortisol levels, including hypertension and glucose intolerance.
• Endogenous hypercorticism: Treats conditions where the body produces too much cortisol, leading to various metabolic and hormonal imbalances.

• Isturisa 1mg works by inhibiting the enzyme 11β-hydroxylase (CYP11B1), which is responsible for the final step in cortisol synthesis in the adrenal glands. By blocking this enzyme, osilodrostat reduces the production of cortisol, thereby alleviating the symptoms associated with Cushing's disease and Cushing's syndrome. This mechanism helps to restore normal hormonal balance in the body.

Isturisa 1mg may cause various side effects, ranging from common to serious. It is important to monitor patients closely for any adverse reactions.

Common Side Effects

• Diarrhea: Frequent loose stools or abdominal discomfort.
• Nausea: Feeling sick to the stomach, sometimes leading to vomiting.
• Fatigue: Persistent tiredness or lack of energy.
• Headache: Pain or discomfort in the head.
• Abdominal pain: Discomfort or cramping in the stomach area.
• Dizziness: Feeling lightheaded or unsteady.
• Hypokalemia: Low potassium levels in the blood, which can cause muscle weakness and irregular heartbeats.
• Hypocortisolism: Insufficient cortisol production, leading to symptoms such as fatigue, weakness, and low blood pressure.

Serious or Rare Side Effects

• Hypotension: Abnormally low blood pressure, which can cause dizziness or fainting.
• QT prolongation: A heart rhythm disorder that can increase the risk of sudden cardiac arrest.
• Liver enzyme elevation: Increased levels of liver enzymes, indicating potential liver damage.
• Syncope: Temporary loss of consciousness, often due to a drop in blood pressure.
• Allergic reactions: Severe allergic responses, including rash, itching, and swelling.

Isturisa 1mg should be used with caution and under the supervision of a healthcare professional. Certain precautions and warnings should be observed to ensure safe and effective use.

• Monitoring: Regular monitoring of cortisol levels and adrenal function is essential to adjust the dosage and avoid complications.
• Pregnancy: Use during pregnancy should be carefully considered, and the treatment should be stopped at least one week before planned conception.
• Breastfeeding: Avoid breastfeeding while taking Isturisa 1mg, as the effects on the infant are not well understood.
• QT prolongation: Patients with a history of heart conditions or those taking medications that prolong the QT interval should be monitored closely.
• Hypocortisolism: Be aware of the symptoms of hypocortisolism, such as fatigue, weakness, and low blood pressure, and seek medical attention if they occur.
• Store below 25°C: Keep in the original pack, protect from moisture.

Isturisa 1mg may interact with other medications, potentially altering its effectiveness or increasing the risk of side effects. It is important to be aware of these interactions.

Major Interactions (Avoid)

• CYP3A inhibitors: Medications that inhibit the CYP3A enzyme can increase the levels of osilodrostat in the body, leading to an increased risk of side effects.
• CYP3A inducers: Medications that induce the CYP3A enzyme can decrease the levels of osilodrostat, reducing its effectiveness.
• Corticosteroids: Concurrent use with corticosteroids can interfere with the therapeutic effects of Isturisa 1mg.
• Drugs that prolong QT interval: Combining Isturisa 1mg with medications that prolong the QT interval can increase the risk of serious heart rhythm disorders.

Moderate Interactions (Monitor Closely)

• Antihypertensives: Isturisa 1mg may lower blood pressure, and concurrent use with antihypertensive medications can increase the risk of hypotension.
• Diuretics: Diuretics can lower potassium levels, which can be exacerbated by Isturisa 1mg, leading to hypokalemia.
• Antidiabetic medications: Isturisa 1mg can affect glucose metabolism, and concurrent use with antidiabetic medications may require dosage adjustments.