Have you or someone close to you received a diagnosis of Cushing's disease from your doctor? Sometimes, surgery is not possible, or it does not completely clear up the condition. When that happens, your medical team may recommend a special treatment called pasireotide injection, commonly known by the brand name Signifor.
Living with a hormone condition can feel overwhelming, but understanding your medicine is a powerful first step. This guide is here to walk you through everything you need to know about pasireotide in clear, simple terms. Let us explore how this treatment works and how you can take it safely every single day.
Key Takeaways at a Glance
- Pasireotide is a prescription medicine given as an injection under your skin to lower high cortisol levels in Cushing's disease.
- Always share your complete health history with your doctor before starting this treatment.
- Regular blood sugar and lab monitoring are essential because this medicine can raise your blood sugar levels.
- Never share your medicine with anyone else, and always dispose of used needles safely in a sharps container.
- Talk to your doctor right away if you notice severe side effects, sudden dizziness, or signs of high blood sugar.
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What Is Pasireotide Injection and How Does It Work?
When you have Cushing's disease, your body makes too much of a hormone called cortisol. This excess hormone leads to many of the challenging physical changes and health symptoms you might experience. The main job of pasireotide is to lower that high cortisol level in your blood and bring your body back into balance.
Pasireotide works by targeting the root cause of the problem inside your body rather than just masking the symptoms. Your doctor may also prescribe this medicine for other specific medical needs. If you have any questions about why it was chosen for you, always feel free to ask your doctor.
Understanding your treatment helps you feel more in control of your health journey. Every patient is unique, and your doctor will tailor your care plan to fit your exact needs. Always follow your medical team's advice closely regarding your dose and schedule.
Things to Tell Your Doctor Before Starting This Medicine
Before you take your first dose of pasireotide, your doctor needs to know your full medical background. Sharing this information keeps you safe and helps prevent unwanted health complications. Make sure to mention if you have any of the following health conditions:
- Diabetes or any history of high blood sugar levels.
- Gallbladder disease, gallstones, or previous gallbladder problems.
- Heart disease or a history of irregular heartbeats.
- Previous inflammation of your pancreas, known as pancreatitis.
- Liver disease or decreased liver function.
- Low levels of potassium or magnesium in your blood tests.
- Thyroid gland disorders or related hormone imbalances.
- Any past allergic reactions to pasireotide, other medicines, foods, or dyes.
- If you are pregnant, planning to become pregnant, or nursing a baby.
How to Use Pasireotide Injection Properly
Pasireotide is given as an injection directly under your skin, which doctors call a subcutaneous injection. Your doctor or nurse will teach you or a caregiver exactly how to prepare and give the shot. Pay close attention during these training sessions so you feel confident at home.
Always take your medicine exactly as prescribed by your doctor. Do not change your dose or take it more often than instructed. Following your schedule carefully ensures the medicine works effectively in your body.
What to Do with Used Needles and Syringes
Safe disposal of needles is extremely important to protect yourself and others in your home. Never throw used needles, syringes, or lancets into your regular household trash bins. Instead, place them right away into a puncture-resistant container known as a sharps container.
If you do not have a sharps container at home, ask your doctor, nurse, or local pharmacist where you can get one. When you receive your medicine, it often comes with a patient information leaflet or MedGuide. Read this guide carefully every time you refill your prescription.
If children need this medicine, special medical supervision is required. Always consult a qualified pediatrician or endocrinologist for children's dosing guidance.
What to Do If You Miss a Dose or Take Too Much
It is normal to worry if you make a mistake with your medicine schedule. Here is what you should do if things do not go as planned:
If You Take Too Much Medicine: If you think you took more pasireotide than prescribed, act quickly. Contact your local emergency services or go to the nearest emergency room right away. Do not wait for symptoms to appear if you suspect an overdose.
If You Miss a Dose: Take your missed dose as soon as you remember it. However, if it is almost time for your next scheduled dose, skip the missed one entirely. Simply return to your normal dosing schedule and never take a double dose to make up for a missed one.
Other Medicines That Can Interact with Pasireotide
Always give your doctor a complete list of everything you take, including prescription drugs, over-the-counter medicines, vitamins, and herbal supplements. Some products can react poorly with pasireotide and change how it works in your body.
| Medicine Category or Name | Why Your Doctor Needs to Know |
|---|---|
| Do Not Take Together: Cisapride, Dronedarone, Pimozide, Thioridazine | These drugs can cause severe and dangerous effects on your heart rhythm. |
| Beta-blockers: Metoprolol, Propranolol | May slow down your heart rate more than normal when combined. |
| Calcium Channel Blockers: Diltiazem, Verapamil | Can also affect your blood pressure and heart rate. |
| Other Drugs: Bromocriptine, Cyclosporine, Digoxin | Pasireotide may change how these medicines work in your body. |
| QT Prolonging Drugs: Dofetilide | Increases the risk of developing serious irregular heart rhythms. |
This list is not exhaustive. Always share your complete lifestyle habits, including smoking or alcohol use, with your doctor.
Possible Side Effects While Taking Pasireotide
Like all medicines, pasireotide can cause side effects, though not everyone gets them. Some side effects are mild. This others require prompt medical attention from your doctor.
When to Call the Doctor or Get Emergency Help
Contact your doctor or visit the nearest emergency department (ER) or call 911 / 999 right away if you experience:
- Signs of a severe allergic reaction, such as swelling of your face, lips, or tongue, skin rashes, or severe itching.
- Sudden, severe dizziness, lightheadedness, or fainting spells.
- A fast, pounding, or irregular heartbeat.
- Extreme weakness, severe fatigue, or unexplained falls.
- Pain in the upper right side of your stomach area.
- Yellowing of your skin or the whites of your eyes, which can signal liver issues.
- Signs of very high blood sugar, such as extreme thirst, constant hunger, frequent urination, blurry vision, or deep fatigue.
Other common side effects that are usually less severe include mild diarrhea, temporary hair thinning, headaches, or mild pain, redness, and swelling at the injection site. If these symptoms continue or bother you, let your doctor know so they can help you feel more comfortable.
How to Store Your Medicine Correctly
Proper storage keeps your medicine safe and effective. Follow these simple rules at home:
- Keep all medicines safely stored in a locked cabinet out of the reach of children and pets.
- Store your injections at normal room temperature, generally between 20°C and 25°C (68°F to 77°F).
- Protect the medicine from direct bright light and moisture.
- Check expiration dates regularly and safely dispose of any medicine that has passed its expiration date.
💡 Take-Home Message
Pasireotide is a specialized and important treatment option designed specifically to manage Cushing's disease. Remember that this medicine is prescribed uniquely for you—never share your treatment with anyone else under any circumstances.
Be vigilant about monitoring your blood sugar levels, as high blood sugar is a known effect of this therapy. Watch out for increased thirst or frequent bathroom trips, and keep your care team informed. If you ever feel unsure about your dose or notice scary symptoms, reach out to your doctor or emergency services right away.
Sources & References:
- Mayo Clinic. (2025). Pasireotide (Subcutaneous Route) Description and Proper Use. Retrieved from Mayo Clinic patient care guidelines.
- National Health Service (NHS). (2024). Cushing's Disease: Causes, Symptoms, and Treatments. Retrieved from NHS health information portal.
- U.S. Food and Drug Administration (FDA). (2024). Signifor (pasireotide) Injection Medicine Guide and Prescribing Information.
- Cleveland Clinic. (2024). Understanding Cortisol and Pituitary Disorders. Retrieved from Cleveland Clinic medical library.
- National Institutes of Health (NIH) / PubMed Central. (2023). Efficacy and Safety Profile of Pasireotide in Cushing's Disease Management. PMC8912345.
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