Common Brand Name(s): Prevacid
Important: How To Use This Information
This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.
Lansoprazole is used to treat acid-related throat problems (erosive esophagitis). It works by blocking acid production in the stomach. This medication is known as a proton pump inhibitor (PPI). Decreasing excess stomach acid can help relieve symptoms such as heartburn, difficulty swallowing, persistent cough, and trouble sleeping. It can also prevent serious acid damage to your digestive system (e.g., ulcers, cancer of the esophagus).
This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.
This drug may also be used for bleeding from stomach/intestinal ulcers.
How To Use
This medication is given by injection into a vein over 30 minutes as directed by your doctor, usually once daily.
When you are able to take medicines by mouth, your doctor will switch your treatment to an oral form of this drug.
If needed, antacids may be taken along with this medication.
The dosage and length of treatment is based on your medical condition and response to therapy.
If you are giving this medication to yourself at home, learn all preparation and usage instructions from your health care professional. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely.
Use this medication regularly in order to get the most benefit from it. Remember to use it at the same time each day. Continue to use this medication for the prescribed length of treatment even if you are feeling better.
Inform your doctor if your condition persists or worsens. The risk of side effects goes up over time. Ask your doctor how long you should use this medication.
Headache, constipation, diarrhea, nausea, or redness/swelling/pain at the injection site may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including:
- signs of lupus (such as rash on nose and cheeks, new or worsening joint pain)
This medication may rarely cause a severe intestinal condition (Clostridium difficile-associated diarrhea) due to a type of resistant bacteria. Do not use anti-diarrhea or opioid medications if you have any of these symptoms because these products may make them worse. Tell your doctor right away if you develop:
- persistent diarrhea
- abdominal or stomach pain/cramping
- blood/mucus in your stool
A serious allergic reaction to this drug is unlikely, but get medical help right away if it occurs. Symptoms of a serious allergic reaction include:
- itching/swelling (especially of the face/tongue/throat)
- trouble breathing
- signs of kidney problems (such as change in the amount of urine)
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Before using lansoprazole, tell your doctor or pharmacist if you are allergic to it; or to similar drugs (e.g., dexlansoprazole, omeprazole, pantoprazole); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of:
- liver disease
- other stomach problems (e.g., tumors)
Some symptoms may actually be signs of a more serious condition. Get medical help right away if you have:
- heartburn with lightheadedness/sweating/dizziness
- chest/jaw/arm/shoulder pain (especially with shortness of breath, unusual sweating)
- unexplained weight loss
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Proton pump inhibitors (such as lansoprazole) may increase your risk of bone fractures, especially with longer use, higher doses, and in older adults. Talk with your doctor about ways to prevent bone loss/fracture, such as taking calcium (such as calcium citrate) and vitamin D supplements.
Older adults may be more sensitive to the side effects of this drug, especially bone loss and fractures (see above), and Clostridium difficile infection (see Side Effects section).
This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.
It is unknown if this drug passes into breast milk, but it may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug include:
- methotrexate (especially high-dose treatment)
Some products need stomach acid so that the body can absorb them properly (such as ampicillin, atazanavir, dasatinib, erlotinib, nelfinavir, pazopanib, rilpivirine, certain azole antifungals including itraconazole/ketoconazole/posaconazole). Lansoprazole decreases stomach acid, so it may change how well these other products work. Before using lansoprazole, consult your doctor or pharmacist about the other medications you take and for advice on how to reduce or avoid these types of interactions.
Lansoprazole is very similar to dexlansoprazole. Do not use medications containing dexlansoprazole while using lansoprazole.
This medication may interfere with certain laboratory tests, possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
Laboratory and/or medical tests may be performed periodically to monitor your progress or check for side effects.
For the best possible benefit, it is important to receive each scheduled dose of this medication as directed. If you miss a dose, contact your doctor or pharmacist right away to establish a new dosing schedule. Do not double the dose to catch up.
Consult the product instructions and your pharmacist for storage details. Keep all medications away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Information last revised December 2019.
Copyright(c) 2019 First Databank, Inc.
Conditions of use: The information in this database is intended to supplement, not substitute for the expertise and judgment of healthcare professionals. The information in not intend to cover all possible uses, directions, precautions, drug interactions or adverse effects nor should it be construed in indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.