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Loperamide: Patient drug information

Loperamide: Patient drug information

(For additional information see "Loperamide: Drug information" and see "Loperamide: Pediatric drug information")

You must carefully read the "Consumer Information Use and Disclaimer" below in order to understand and correctly use this information.

Brand Names: US
  • Anti-Diarrheal [OTC];
  • Diamode [OTC];
  • Imodium A-D [OTC]
Warning
  • Do not take more than the package label says or your doctor told you to take. Taking more than you were told can cause severe heart problems, including an abnormal heartbeat. Sometimes, these heart problems can lead to death. Taking this drug with certain other drugs may also raise the chance of heart problems. Call your doctor right away if you have chest pain or pressure, a fast or abnormal heartbeat, severe dizziness, or passing out.
  • Do not give to a child younger than 2 years of age.
What is this drug used for?
  • It is used to treat diarrhea.
  • It is used to lower ostomy output.
What do I need to tell my doctor BEFORE I take this drug?
  • If you are allergic to this drug; any part of this drug; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
  • If you have any of these health problems: Bloody or black stools, stomach pain without diarrhea, dysentery (may include blood in stools and fever), constipation, or a certain bowel problem called colitis.
  • If you have ever had a long QT on ECG or other heartbeat that is not normal.
  • If you have heart problems.
  • If you have any of these health problems: Low potassium or magnesium levels.
  • If you are taking any drugs that can cause a certain type of heartbeat that is not normal (prolonged QT interval). There are many drugs that can do this. Ask your doctor or pharmacist if you are not sure.
  • If you are breast-feeding. Do not breast-feed while you take this drug.
  • 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.
What are some things I need to know or do while I take this drug?
  • Tell all of your health care providers that you take this drug. 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 drug affects you.
  • Talk with your doctor before you use alcohol, marijuana or other forms of cannabis, or prescription or OTC drugs that may slow your actions.
  • Dehydration and electrolyte problems can happen in people who have diarrhea. Talk with the doctor about what to do to prevent dehydration and electrolyte problems.
  • If the patient is a child, use this drug with care. The risk of some side effects may be higher in children.
  • If you are 65 or older, use this drug with care. You could have more side effects.
  • 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.
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, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Very upset stomach or throwing up.
  • Belly pain.
  • Constipation.
  • Swelling of belly.
  • Bloating.
  • Fever.
  • Black, tarry, or bloody stools.
  • Not able to pass urine or change in how much urine is passed.
What are some other side effects of this drug?
  • 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:
  • Feeling dizzy, sleepy, tired, or weak.
  • 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.
How is this drug best taken?
  • Use this drug as ordered by your doctor. Read all information given to you. Follow all instructions closely.
  • All products:
  • Take with or without food.
  • Drink lots of noncaffeine liquids unless told to drink less liquid by your doctor.
  • Do not take this drug for longer than you were told by your doctor.
  • Liquid:
  • 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.
  • Some of these drugs need to be shaken before use. Be sure you know if this product needs to be shaken before using it.
What do I do if I miss a dose?
  • If you take this drug on a regular basis, 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.
  • Many times this drug is taken on an as needed basis. Do not take more often than told by the doctor.
How do I store and/or throw out this drug?
  • Store at room temperature in a dry place. Do not store in a bathroom.
  • 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.
General drug facts
  • 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.
  • 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.
Last Reviewed Date2022-10-27
Consumer Information Use and Disclaimer
  • This generalized information is a limited summary of diagnosis, treatment, and/or medication information. It is not meant to be comprehensive and should be used as a tool to help the user understand and/or assess potential diagnostic and treatment options. It does NOT include all information about conditions, treatments, medications, side effects, or risks that may apply to a specific patient. It is not intended to be medical advice or a substitute for the medical advice, diagnosis, or treatment of a health care provider based on the health care provider's examination and assessment of a patient's specific and unique circumstances. Patients must speak with a health care provider for complete information about their health, medical questions, and treatment options, including any risks or benefits regarding use of medications. This information does not endorse any treatments or medications as safe, effective, or approved for treating a specific patient. UpToDate, Inc. and its affiliates disclaim any warranty or liability relating to this information or the use thereof. The use of this information is governed by the Terms of Use, available at https://www.wolterskluwer.com/en/know/clinical-effectiveness-terms.
  • © 2022 UpToDate, Inc. and its affiliates and/or licensors. All rights reserved.
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