Intron-A (Interferon Alfa-2b Powder for Injection)
Name: Intron-A (Interferon Alfa-2b Powder for Injection)
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Uses of Intron-A
- It is used to treat cancer.
- It is used to treat genital warts.
- It is used to treat perianal warts.
- It is used to treat hepatitis B and C infections.
- It is used to treat skin wounds in patients with AIDS-related Kaposi's sarcoma.
- It may be given to you for other reasons. Talk with the doctor.
What do I need to tell my doctor BEFORE I take Intron-A?
- If you have an allergy to this medicine or any part of Intron-A.
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you have ever had any of these health problems: Autoimmune disease or liver disease.
- If you have had a transplant.
- If you are breast-feeding or plan to breast-feed.
This is not a list of all drugs or health problems that interact with this medicine.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Intron-A with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Intron-A?
For all patients taking this medicine:
- Tell all of your health care providers that you take Intron-A. This includes your doctors, nurses, pharmacists, and dentists.
- Avoid driving and doing other tasks or actions that call for you to be alert until you see how this medicine affects you.
- Tell your doctor if you have signs of high blood sugar like confusion, feeling sleepy, more thirst, more hungry, passing urine more often, flushing, fast breathing, or breath that smells like fruit.
- If you have high blood sugar (diabetes), you will need to watch your blood sugar closely.
- You may have more chance of getting an infection. Wash hands often. Stay away from people with infections, colds, or flu.
- You may bleed more easily. Be careful and avoid injury. Use a soft toothbrush and an electric razor.
- Have an eye exam as you have been told by your doctor.
- Very bad and sometimes deadly liver problems have happened with Intron-A. Call your doctor right away if you have signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
- Very bad and sometimes deadly lung problems have happened with this medicine. Call your doctor right away if you have lung or breathing problems like trouble breathing, shortness of breath, or a cough that is new or worse.
- A very bad skin reaction (Stevens-Johnson syndrome/toxic epidermal necrolysis) may happen. It can cause very bad health problems that may not go away, and sometimes death. Get medical help right away if you have signs like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in your mouth, throat, nose, or eyes.
- If you are 65 or older, use Intron-A with care. You could have more side effects.
- This medicine may affect growth in children and teens in some cases. They may need regular growth checks. Talk with the doctor.
- Use birth control you can trust to prevent pregnancy while you are taking this medicine and for 5 months after you stop taking it.
- This medicine is made from human plasma (part of the blood) and may have viruses that may cause disease. This medicine is screened, tested, and treated to lower the chance that it carries an infection. Talk with the doctor.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using Intron-A while you are pregnant.
- It is not known if this medicine will prevent liver failure or other liver problems like cancer. Talk with the doctor.
- This medicine does not stop the spread of diseases like HIV or hepatitis that are passed through blood or having sex. Do not have any kind of sex without using a latex or polyurethane condom. Do not share needles or other things like toothbrushes or razors. Talk with your doctor.
- This medicine may be used with ribavirin. If you are also taking ribavirin, talk with the doctor about the risks and side effects that may happen.
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of infection like fever, chills, very bad sore throat, ear or sinus pain, cough, more sputum or change in color of sputum, pain with passing urine, mouth sores, or wound that will not heal.
- Signs of a pancreas problem (pancreatitis) like very bad stomach pain, very bad back pain, or very bad upset stomach or throwing up.
- Any unexplained bruising or bleeding.
- Black, tarry, or bloody stools.
- Throwing up blood or throw up that looks like coffee grounds.
- Weakness on 1 side of the body, trouble speaking or thinking, change in balance, drooping on one side of the face, or blurred eyesight.
- Feeling very tired or weak.
- Very bad dizziness or passing out.
- Shortness of breath, a big weight gain, or swelling in the arms or legs.
- Very bad headache.
- Very bad belly pain.
- A burning, numbness, or tingling feeling that is not normal.
- Not able to focus.
- Memory problems or loss.
- Feeling confused.
- Trouble walking.
- Not able to pass urine or change in how much urine is passed.
- Not able to handle heat or cold.
- A change in weight without trying.
- Change in look of teeth or gums.
- This medicine may cause eye problems that may lead to loss of eyesight or blindness. Tell your doctor if you have or have ever had eye problems. Call your doctor right away if you have any changes in eyesight.
Consumer Information Use and Disclaimer
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- This medicine comes with an extra patient fact sheet called a Medication Guide. Read it with care. Read it again each time Intron-A is refilled. If you have any questions about this medicine, please talk with the doctor, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
This information should not be used to decide whether or not to take Intron-A or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Intron-A. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.
Review Date: October 4, 2017