This article only addresses the prescription version. Prescription ranitidine comes as an oral tablet, oral capsule, or oral syrup. It also comes as an injectable solution. Ranitidine oral tablet is available as the brand-name drug Zantac. Generic drugs usually cost less than the brand-name version. In some cases, they may not be available in all strengths or forms as the brand-name drug.
Ranitidine may be used as part of a combination therapy. This means you may need to take it with other medications. Ranitidine is typically used for short-term treatment, especially for GERD. You may need to take it for several weeks or months. Ranitidine belongs to a class of drugs called histamine receptor antagonists. A class of drugs is a group of medications that work in a similar way.
These drugs are often used to treat similar conditions. If these effects are mild, they may go away within a few days or a couple of weeks. Call your doctor right away if you have serious side effects. Serious side effects and their symptoms can include:. Disclaimer: Our goal is to provide you with the most relevant and current information. However, because drugs affect each person differently, we cannot guarantee that this information includes all possible side effects.
This information is not a substitute for medical advice. Always discuss possible side effects with a healthcare provider who knows your medical history.
Ranitidine oral tablet can interact with other medications, vitamins, or herbs you may be taking. An interaction is when a substance changes the way a drug works. This can be harmful or prevent the drug from working well. To help avoid interactions, your doctor should manage all of your medications carefully.
Delavirdine: Do not take delavirdine with ranitidine. Doing so can cause dangerous effects. Ranitidine reduces the levels of delavirdine in your body.
Taking ranitidine with certain medications raises your risk of side effects from these drugs. Examples of these drugs include:. When certain drugs are used with ranitidine, they may not work as well.
This is because the amount of these drugs in your body may be decreased. However, because drugs interact differently in each person, we cannot guarantee that this information includes all possible interactions. Always speak with your healthcare provider about possible interactions with all prescription drugs, vitamins, herbs and supplements, and over-the-counter drugs that you are taking.
All possible dosages and drug forms may not be included here. Your dosage, drug form, and how often you take the drug will depend on:. The kidneys of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time.
This raises your risk of side effects. Your doctor may start you on a lower dosage or a different treatment schedule. This can help keep levels of the drug from building up too much in your body. If you have moderate or severe kidney disease, your doctor may start you on mg once per day.
They may increase the dosage to twice per day. They may increase your dosage to twice per day. Your doctor may start you on a lowered dosage or a different treatment schedule. If you have moderate or severe kidney disease, your doctor may start you on mg taken once per day.
However, because drugs affect each person differently, we cannot guarantee that this list includes all possible dosages.
Always speak with your doctor or pharmacist about dosages that are right for you. Ranitidine is used for long-term or short-term treatment.
This may make your condition worse. For this drug to work well, a certain amount needs to be in your body at all times. If you take too much: Ranitidine overdose is very rare. You would usually have to take much more than recommended before having overdose symptoms. However, if you take too much ranitidine, you could have dangerous levels of the drug in your body.
Symptoms of an overdose of this drug can include:. But if your symptoms are severe, call or go to the nearest emergency room right away. What to do if you miss a dose: Take your dose as soon as you remember. But if you remember just a few hours before your next scheduled dose, take only one dose. Never try to catch up by taking two doses at once. This could result in dangerous side effects. A prescription for this medication is refillable.
You should not need a new prescription for this medication to be refilled. Your doctor will write the number of refills authorized on your prescription. You and your doctor should monitor certain health issues. This can help make sure you stay safe while you take this drug.
These issues can include your kidney function. Your doctor may do blood tests to check how well your kidneys are working. There are other drugs available to treat your condition. Some may be better suited for you than others. Talk to your doctor about other drug options that may work for you. Taking it again could cause death. The agency has determined that the impurity in some ranitidine products increases over time and when stored at higher than room temperatures and may result in consumer exposure to unacceptable levels of this impurity.
As a result of this immediate market withdrawal request, ranitidine products will not be available for new or existing prescriptions or OTC use in the U. We make every effort to investigate potential health risks and provide our recommendations to the public based on the best available science.
NDMA is a probable human carcinogen a substance that could cause cancer. These low levels would not be expected to lead to an increase in the risk of cancer. However, sustained higher levels of exposure may increase the risk of cancer in humans. At the time, the agency did not have enough scientific evidence to recommend whether individuals should continue or stop taking ranitidine medicines, and continued its investigation and warned the public in September of the potential risks and to consider alternative OTC and prescription treatments.
New FDA testing and evaluation prompted by information from third-party laboratories confirmed that NDMA levels increase in ranitidine even under normal storage conditions, and NDMA has been found to increase significantly in samples stored at higher temperatures, including temperatures the product may be exposed to during distribution and handling by consumers. The testing also showed that the older a ranitidine product is, or the longer the length of time since it was manufactured, the greater the level of NDMA.
These conditions may raise the level of NDMA in the ranitidine product above the acceptable daily intake limit.
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