- It is used to treat TB (tuberculosis).
- It is used to stop the spread of meningitis in people who carry the bacteria but are not sick with the disease.
- It may be given to you for other reasons. Talk with the doctor.
- If you have an allergy to rifampin or any other part of this drug.
- 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 are taking any of these drugs: Atazanavir, cefazolin or other cephalosporin drugs, darunavir, fosamprenavir, saquinavir, or tipranavir.
- 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 drug.
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 this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
- Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
- Have blood work checked as you have been told by the doctor. Talk with the doctor.
- This drug may affect certain lab tests. Tell all of your health care providers and lab workers that you take this drug.
- Talk with your doctor before you drink alcohol.
- If you have high blood sugar (diabetes), you will need to watch your blood sugar closely. Tell your doctor if you get 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.
- This drug may stain contact lenses.
- This drug may affect how much of some other drugs are in your body. If you are taking other drugs, talk with your doctor. You may need to have your blood work checked more closely while taking this drug with your other drugs.
- A very bad and sometimes deadly reaction has happened with this drug. Most of the time, this reaction has signs like fever, rash, or swollen glands with problems in body organs like the liver, kidney, blood, heart, muscles and joints, or lungs. Talk with the doctor.
- Liver problems have happened with this drug. Sometimes these problems have been deadly in people who had liver disease and in people who took this drug with other drugs that may raise the chance of liver problems. If you have questions, talk with the doctor.
- 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.
- If you are 65 or older, use this drug with care. You could have more side effects.
- Birth control pills and other hormone-based birth control may not work as well to prevent pregnancy. Use some other kind of birth control also like a condom when taking this drug.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this drug while you are pregnant.
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, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of kidney problems like unable to pass urine, change in how much urine is passed, blood in the urine, or a big weight gain.
- Feeling very tired or weak.
- Feeling confused.
- Dizziness or passing out.
- Flu-like signs.
- Fever or chills.
- Sore throat.
- Swollen gland.
- Joint pain or swelling.
- Muscle pain or weakness.
- Shortness of breath.
- Chest pain.
- Sweating a lot.
- A heartbeat that does not feel normal.
- Swelling in the arms or legs.
- Any unexplained bruising or bleeding.
- Purple spots or redness of the skin.
- Change in balance.
- Not able to focus.
- Change in how you act.
- Period (menstrual) changes.
- Change in eyesight, eye pain, or very bad eye irritation.
- Change in tooth color. These changes may be long-lasting.
- It is common to have diarrhea when taking this drug. Rarely, a very bad form of diarrhea called Clostridium difficile (C diff)–associated diarrhea (CDAD) may occur. Sometimes, this has led to a deadly bowel problem (colitis). CDAD may happen while you are taking this drug or within a few months after you stop taking it. Call your doctor right away if you have stomach pain or cramps, very loose or watery stools, or bloody stools. Do not try to treat loose stools without first checking with your doctor.
- This drug may irritate the vein. If the drug leaks from the vein, it may also cause irritation around that area. Tell your nurse if you have any redness, burning, pain, swelling, or leaking of fluid where the drug is going into your body.
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Loose stools (diarrhea).
- Feeling sleepy.
- Upset stomach or throwing up.
- Not hungry.
- Stomach cramps.
- Feeling tired or weak.
- Change in color of body fluids to orange or red.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to your national health agency.
Use this drug as ordered by your doctor. Read all information given to you. Follow all instructions closely.
All oral products:
- Take on an empty stomach. Take 1 hour before or 2 hours after meals.
- Do not take antacids within 1 hour of this drug.
- To gain the most benefit, do not miss doses.
- Keep taking this drug as you have been told by your doctor or other health care provider, even if you feel well.
- Take with a full glass of water.
- A liquid (suspension) can be made if you cannot swallow pills. Talk with your doctor or pharmacist.
- If a liquid (suspension) is made, shake well before use.
- Measure liquid doses carefully. Use the measuring device that comes with this drug. If there is none, ask the pharmacist for a device to measure this drug.
- It is given as an infusion into a vein over a period of time.
All oral products:
- Take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- Call your doctor to find out what to do.
- Store at room temperature.
- Protect from light.
- Protect from heat.
- Store in a dry place. Do not store in a bathroom.
- Store liquid (suspension) at room temperature or in a refrigerator. Throw away any unused portion after 4 weeks.
- If you need to store this drug at home, talk with your doctor, nurse, or pharmacist about how to store it.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
- 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.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, 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 this medicine 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 this medicine. 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.
© 2018 Wolters Kluwer Clinical Drug Information, Inc. and its affiliates and/or licensors. All rights reserved.