ranitidine - injection, Zantac (cont.)
PRECAUTIONS: Before using ranitidine, tell your doctor or pharmacist if you are allergic to it; or to other H2 histamine blockers (e.g., cimetidine, famotidine); or if you have any other allergies.This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: a certain blood disorder (porphyria).Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart problems (e.g., irregular heartbeat), immune system problems, kidney problems, liver problems, lung problems (e.g., asthma, chronic obstructive pulmonary disease-COPD), other stomach problems (e.g., tumors).Some symptoms may actually be signs of a more serious condition. Tell your doctor immediately if you have: chest pain or shoulder/jaw pain (especially with trouble breathing), heartburn combined with lightheadedness/sweating/dizziness, pain spreading to arms/neck/shoulders, unexplained weight loss.This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.Kidney function declines as you grow older. This medication is removed by the kidneys. Therefore, elderly people may be at greater risk for side effects while using this drug. Caution is advised when using this drug in the elderly because they may be more sensitive to its effects, especially confusion and dizziness.Ranitidine should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.Ranitidine passes into breast milk. Consult your doctor before breast-feeding.
DRUG INTERACTIONS: The effects of some drugs can change if you take other drugs or herbal products at the same time. This can increase your risk for serious side effects or may cause your medications not to work correctly. These drug interactions are possible, but do not always occur. Your doctor or pharmacist can often prevent or manage interactions by changing how you use your medications or by close monitoring.To help your doctor and pharmacist give you the best care, be sure to tell your doctor and pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products) before starting treatment with this product. While using this product, do not start, stop, or change the dosage of any other medicines you are using without your doctor's approval.Some products that may interact with this drug include: procainamide, propantheline, warfarin.This medication decreases the amount of acid in your stomach. This can change the amount of medication absorbed from your stomach which may affect how these medications work. Examples of affected drugs include atazanavir, delavirdine, dasatinib, gefitinib, glipizide, raltegravir, triazolam among others. Azole antifungals such as ketoconazole may also be affected.This medication can slow down the removal of other medications from your body, which may affect how they work. Examples of affected drugs include metoprolol and phenytoin among others.Check the labels on all your medicines because they may contain aspirin or aspirin-like NSAIDs (e.g., ibuprofen, naproxen) that can cause stomach irritation/ulcers. Ask your pharmacist about the safe use of those products. Low-dose aspirin, as prescribed by your doctor for specific medical reasons such as heart attack or stroke prevention (usually at dosages of 81-325 milligrams per day), should be continued. Consult your doctor or pharmacist for more details.This medication and similar H2 histamine blockers (e.g., cimetidine, famotidine) are available both over-the-counter and by prescription. Do not use them at the same time.This medication may interfere with certain laboratory tests (e.g., urine protein), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.
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