Pictures of Zantac (Ranitidine Hcl), drug imprint information, side effects for the patient. Consumer information about the medication RANITIDINE LIQUID - ORAL (Zantac), includes side effects, drug interactions, recommended dosages, and storage information. Read more about the prescription drug RANITIDINE LIQUID - ORAL. Ranitidine is used to treat and prevent ulcers in the stomach and intestines. Learn about side effects, interactions and indications. Ranitidine is a drug that’s available in a prescription version and an over-the-counter version. This article only addresses the prescription version. Zantac (Ranitidine) is used to prevent stress ulcers, aspiration of stomach acid during anesthesia, and stomach damage caused by NSAID drugs. Learn about the potential side effects of ranitidine. Includes common and rare side effects information for consumers and healthcare professionals. Ranitidine comes as a tablet, an effervescent tablet, effervescent granules, and a syrup to take by mouth. It is usually taken once a day at bedtime or two to four times a day. Dachshunds being treated for disc disease, either with surgery or conventional treatment, are likely to be administered some of the medications discussed here. Ranitidine 150 mg tablets, the generic product of Zantac 150, is an over-the-counter medication used for the relief of heartburn and for the treatment of stomach ulcers. Find patient medical information for Acid Reducer (Ranitidine) Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.