Before taking Zantac (ranitidine) 300mg, 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.
Zantac (ranitidine) 300mg 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 Zantac (ranitidine) 300mg, tell your doctor or pharmacist your medical history, especially of: immune system problems, kidney problems, liver problems, lung diseases (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: heartburn combined with lightheadedness/sweating/dizziness, chest pain or shoulder/jaw pain (especially with trouble breathing), pain spreading to arms/neck/shoulders, unexplained weight loss.
Zantac (ranitidine) 300mg may make you dizzy; use caution while engaging in activities requiring alertness such as driving or using machinery. Limit alcoholic beverages.
Do not use to treat children younger than 12 unless directed by the doctor.
Kidney function declines as you grow older. Zantac (ranitidine) 300mg is removed by the kidneys. Therefore, elderly people may be at greater risk for side effects while using Zantac (ranitidine) 300mg. Caution is advised when using Zantac (ranitidine) 300mg in the elderly because they may be more sensitive to its effects, especially confusion and dizziness.
Zantac (ranitidine) 300mg should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.
Zantac (ranitidine) 300mg passes into breast milk. Consult your doctor before breast-feeding.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Store the US product in a tightly closed container at room temperature between 59-86 degrees F (15-30 degrees C) away from moisture and light. Store the nonprescription medication at room temperature between 68-86 degrees F (20-30 degrees C).
Store the Canadian product in a tightly closed container between 35.6 and 86 degrees F (2 and 30 degrees C) away from moisture and light.
Do not store in the bathroom. Keep all medicines away from children and pets.
Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Take Zantac (ranitidine) 300mg by mouth with or without food, usually once or twice daily or as directed by your doctor. It may be prescribed 4 times a day for some conditions. If you are taking Zantac (ranitidine) 300mg once daily, it is usually taken after the evening meal or before bedtime.
The dosage and length of treatment are based on your medical condition and response to therapy. In children, dosage may also be based on body weight. Follow your doctor's instructions carefully. You may take other medications (e.g., antacids) for your condition as recommended by your doctor.
Take Zantac (ranitidine) 300mg regularly in order to get the most benefit from it. To help you remember, take it at the same time(s) each day. Do not increase your dose or take it more often than prescribed. Do not stop taking this without your doctor's approval because this may delay healing of the ulcer.
If you are using nonprescription Zantac (ranitidine) 300mg for self-treatment of acid indigestion or heartburn, take 1 tablet by mouth with a glass of water as needed. To prevent heartburn, take 1 tablet by mouth with a glass of water 30-60 minutes before eating food or drinking beverages that cause heartburn. Do not take more than 2 tablets in 24 hours unless directed by your doctor. Do not take for more than 14 days in a row without talking with your doctor.
Inform your doctor if your condition does not improve or if it worsens.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Headache, dizziness, constipation or diarrhea may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.
If your doctor has directed you to use Zantac (ranitidine) 300mg, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using Zantac (ranitidine) 300mg do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: blurred vision, mental/mood changes (e.g., agitation, confusion, depression, hallucinations).
Tell your doctor immediately if any of these rare but very serious side effects occur: easy bleeding/bruising, enlarged breasts, severe tiredness, fast/slow/irregular heartbeat, signs of infection (e.g., fever, persistent sore throat, cough), severe stomach/abdominal pain, dark urine, yellowing skin/eyes.
A very serious allergic reaction to Zantac (ranitidine) 300mg is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include: rash, itching, swelling, severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
Click HERE to learn more about Zantac side effects.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
If you miss a dose of Zantac (ranitidine) 300mg, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for it. Do not start, stop or change the dosage of any medicine before checking with them first.
Before using Zantac (ranitidine) 300mg, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: atazanavir, azole antifungals (e.g., itraconazole, ketoconazole), metoprolol, propantheline, triazolam.
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.
Zantac (ranitidine) 300mg and similar H2 histamine blockers (e.g., cimetidine, famotidine) are available both over-the-counter and by prescription. Do not take them at the same time.
Zantac (ranitidine) 300mg may interfere with certain laboratory tests (e.g., urine protein), possibly causing false test results. Make sure laboratory personnel and your doctors know you use Zantac (ranitidine) 300mg.
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.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.