400 mg daily. Ranitidine is also used to treat certain stomach and throat problems such as erosive esophagitis, gastroesophageal reflux disease or GERD, and Zollinger-Ellison syndrome.It works by decreasing the amount of acid your stomach makes. 40 mg daily at bedtime. This can be by accident or on purpose. This medication is also available without a prescription. Keep a list of all your medications with you, and share the list with your doctor and pharmacist. 150 mg twice daily. To help you remember, take it at the same time(s) each day. This can be by accident or on purpose. zantac. Copyright © 2018 by RxList Inc. RxList does not provide medical advice, diagnosis or treatment. Check with your physician if you have health questions or concerns.Copyright © 2020 by RxList Inc. RxList does not provide medical advice, diagnosis or treatment. DO NOT use it to treat or manage an actual overdose. If it is near the time of the next dose, skip the missed dose. This medication is also available without a prescription. Get medical help right away if you have: In addition, before you self-treat with this medication, get medical help right away if you have any of these signs of a serious condition: trouble/pain swallowing food, bloody vomit, vomit that looks like coffee grounds, bloody/black stools, Do not use to treat children younger than 12 unless directed by the doctor.Older adults may be more sensitive to the side effects of this drug, especially confusion.Ranitidine should be used only when clearly needed during This medication may interfere with certain laboratory tests (including certain urine protein tests), possibly causing false test results. It works by blocking the production of acid by acid-producing cells in the stomach. My stomach is now hurting. Ranitidine is a prescription drug used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed. Hypersensitivity to ranitidine or components of the formulation. 400 mg twice daily. Ranitidine Dosage Conversion Table. 20 mg twice daily. H2 receptor antagonists are medicines that help decrease stomach acid. If you notice other effects not listed above, contact your doctor or pharmacist.Call your doctor for medical advice about side effects. Accumulation of ranitidine can occur. Common Questions and Answers about Zantac overdose. Ranitidine should be used cautiously in those patients with renal disease, specifically in those with renal impairment or renal failure. How do I overdose on zantac? Drugs A-Z Pill Identifier Supplements Symptom Checker Diseases Dictionary Media; … Ranitidine and the other H2 receptor antagonist drugs have a wide margin of safety in laboratory animals. No images are available for this medication.Did you or will you purchase this product in-store or online?Where do you typically shop for over-the-counter wellness products?Where do you typically shop for over-the-counter wellness products?Where do you typically shop for over-the-counter wellness products?Selected from data included with permission and copyrighted by First Databank, Inc. Contraindications. Ranitidine dosage should be reduced in patients with creatinine clearances of less than 50 ml/min. Zantac (Ranitidine Hcl) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Ranitidine: Famotidine (preferred alternative) Cimetidine. According to a 2013 study, famotidine is more effective at reducing gastric acid secretion than ranitidine. It may also increase blood levels of procainamide. 20 mg daily. If gastroesophageal reflux disease does not respond adequately in 6-8 weeks, do not increase dosage; prescribe proton pump inhibitor instead This medication is also available without a prescription. Español. 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. Ranitidine belongs to … Do not stop taking this without your doctor's approval because this may delay healing of the ulcer.Tell your doctor if your condition does not improve or if it worsens.Tell your doctor right away if you have any serious side effects, including: This is not a complete list of possible side effects. When I came back I counted my pills and I actually took 3. There has been limited experience with overdosage. In children, dosage may also be based on Take this medication regularly in order to get the most benefit from it. Zantac overdose.