Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects. Although most of these side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention. Stop taking the medication and seek immediate medical attention if any of the following occur:. Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking this medication.
Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health.
These factors may affect how you should use this medication. Kidney function: Kidney disease or reduced kidney function may cause this medication to build up in the body, causing side effects. If you have reduced kidney function or kidney disease, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Pneumonia: People with lung disease, a weak immune system, or diabetes may be at an increased risk of developing pneumonia while taking ranitidine. If you have any of these conditions, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Porphyria: Ranitidine may cause attacks of a condition called acute porphyria a disorder that affects the production of heme in the body.
People with a history of acute porphyria should not take ranitidine. Stomach cancer: Using medications such as ranitidine may prevent symptoms of stomach cancer from being noticed. If you have recurrent vomiting, difficulty swallowing, blood in the stool, significant unintentional weight loss, fatigue anemia , or are coughing up blood, check with your doctor right away. If you have heartburn that worsens or returns after using this medication continuously for 2 weeks, check with your doctor.
Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately.
Breast-feeding: This medication passes into breast milk. If you are a breast-feeding mother and are taking ranitidine, it may affect your baby.
Talk to your doctor about whether you should continue breast-feeding. Children: The safety and effectiveness of using this medication have not been established for children less than 8 years of age. Children between the ages of 8 years and 16 years of age, should only use this medication under the supervision of a doctor. Seniors: Seniors may be more likely to experience interactions with other medications when taking ranitidine. If you are a senior, your doctor should closely monitor your condition.
If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:. An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed. Medications other than those listed above may interact with this medication. Ranitidine is a histamine-2 blocker that reduces acid in the stomach.
Ranitidine has been used to treat conditions in which the stomach produces too much acid or conditions in which acid backs up from the stomach into the esophagus, such as gastroesophageal reflux disease GERD.
Ranitidine has also been used to treat and prevent ulcers in the stomach and intestines. A cancer-causing impurity found in many ranitidine medications may increase to unacceptable levels over time and when ranitidine is stored at high temperatures. As a result, the FDA has asked all makers of ranitidine to withdraw this medicine from the market in the United States.
Ranitidine may also have been used for purposes not listed in this medication guide. If you have been taking prescription-strength ranitidine: Before you stop taking the medicine, ask your doctor about safer treatment options.
If you have been taking over-the-counter OTC ranitidine: Stop taking the medicine, and ask your doctor or pharmacist about other approved OTC stomach acid reducers. Heartburn can mimic early symptoms of a heart attack. Get emergency medical help if you have chest pain that spreads to your jaw or shoulder and you feel anxious or light-headed. Before using any OTC medicine to reduce stomach acid, ask a doctor or pharmacist if the medicine is safe for you if you have other medical conditions or allergies.
Ask a doctor before using any OTC stomach acid medicine if you are pregnant or breastfeeding. Get emergency medical help if you have signs of an allergic reaction : hives; difficult breathing; swelling of your face, lips, tongue, or throat. This is not a complete list of side effects and others may occur.
Call your doctor for medical advice about side effects. You should not stop taking prescription-strength ranitidine until you ask your doctor to prescribe a different medication.
Zantac decreases the amount of acid made in the stomach. It is available over the counter and by prescription. It is usually taken 30 to 60 minutes before food that may cause heartburn.
Pharmacist Anyssa S. Garza, PharmD overviews the uses and common side effects of Prescription ranitidine. Pharmacist Bethany Muhlstein, PharmD summarizes the uses, common side effects, and warnings for the H2 blockers class of medications. Zantac Overview Updated: June 26, How was your experience with Zantac?
First, a little about yourself Male Female. What tips would you provide a friend before taking Zantac? Choose one. Back Next. How well did Zantac work for you? Did you experience many side effects while taking this drug? How likely would you be to recommend Zantac to a friend?
Back Submit. Zantac Cautionary Labels Back to Top. Uses of Zantac Back to Top. Zantac is used to treat: heartburn, acid indigestion, and sour or upset stomach ulcers gastroesophageal reflux disease GERD and erosive esophagitis. Both of these conditions result from stomach acid damaging the esophagus.
Manufacturer Back to Top. Boehringer Ingelheim Pharmaceuticals, Inc. Generic Back to Top. Ranitidine For more information on this medication choose from the list of selections below.
Zantac Drug Class Back to Top. Zantac is part of the drug class: H2 receptor antagonists. Side Effects of Zantac Back to Top. Serious side effects have been reported with Zantac.
Common side effects of Zantac include: headache constipation diarrhea nausea vomiting stomach pain dizziness fatigue This is not a complete list of Zantac side effects. Zantac Interactions Back to Top. Especially tell your doctor if you take: procainamide warfarin Coumadin triazolam Halcion midazolam glipizide Glucotrol ketoconazole Nizoral atazanavir Reyataz delavirdine Rescriptor gefitinib Iressa This is not a complete list of Zantac drug interactions.
Zantac Precautions Back to Top. Serious side effects have been reported with Zantac including: Zantac is cleared from the body by the kidneys and liver. Talk to your doctor if you have kidney or liver disease. This medication can cause porphyria attacks in people with acute porphyria, a rare, inherited condition usually affecting the skin or nervous system. Do not take Zantac if you have a history of acute porphyria a disease affecting heme in red blood cells.
Hypersensitivity reaction : An allergic reaction to Zantac is possible.
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