Zantac® products are clinically proven to relieve heartburn symptoms in as little as 30 minutes and last up to 12 hours. Print your Zantac® coupon today and redeem at major grocery stores, drug stores, and mass merchandisers nationwide. Learn about Zantac (Ranitidine Hcl) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Zantac official prescribing information for healthcare professionals. Includes: indications, dosage, adverse reactions, pharmacology and more. Many people chew or drink chalky antacids to relieve their heartburn. These may give fast relief, but they only neutralise the acid that is already in the stomach, so the relief is short lived. Information on the drug ranitidine (Zantac) used in promoting healing of stomach and duodenal ulcers, heartburn, esophagitis, and Zollinger Ellison Syndrome. Side effects, drug interactions, and dosing information is provided. Compare prices, print coupons and get savings tips for Zantac (Ranitidine) and other Heartburn, Gastric Ulcer, GERD, and Duodenal Ulcer drugs at CVS, Walgreens, and other pharmacies. Prices start at $6.60 Prilosec is a brand name for the generic drug omeprazole. It works by blocking the pumps in your stomach that produce acid. Zantac is a brand name for a different generic drug, ranitidine. Zantac (ranitidine hydrochloride) is a H2 (histamine-2) receptor blocker used for treating and preventing ulcers in the duodenum and stomach. Zantac is also used for treating Zantac belongs to a group of drugs called histamine-2 blockers. Ranitidine works by reducing the amount of acid your stomach produces. Zantac is used to treat and prevent ulcers in the stomach and intestines.