Dr. Tara Narula debunked the viral over-the-counter combination of antihistamines and Pepcid that some are using to treat menopause symptoms. Pepcid (famotidine): H2 blocker for heartburn/GERD and ulcers. OTC/Rx dosing, onset, interactions, side effects, and prices by country. Famotidine (Pepcid) is a type of acid reducer called a histamine-2 (H2) antagonist. It helps treat problems caused by too much stomach acid. Over-the-counter famotidine (Pepcid or Pepcid AC) can help with heartburn in people who are 12 and up. Prescription-only famotidine is for people with more ongoing stomach acid problems and stomach or gut ulcers. This medication is taken by mouth once or. Pepcid (Famotidine) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Famotidine (Pepcid and Zantac) treats conditions that cause too much stomach acid, like heartburn, stomach ulcers and reflux disease. Description Famotidine is used to treat stomach ulcers (gastric and duodenal), erosive esophagitis (heartburn or acid indigestion), and gastroesophageal reflux disease (GERD). GERD is a condition where the acid in the stomach washes back up into the esophagus. It is also used to treat certain conditions where there is too much acid in the stomach (eg, Zollinger-Ellison syndrome, multiple. Find patient medical information for Famotidine (Pepcid, Zantac 360) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Pepcid is used to treat ulcers in the stomach and for conditions where the stomach produces too much acid. Learn about side effects, interactions and indications. Learn how H2 Blockers, such as famotidine in PEPCID® products, help provide lasting heartburn relief and lower the amount of acid your stomach produces. Famotidine, sold under the brand name Pepcid among others, is a histamine H 2 receptor antagonist medication that decreases stomach acid production. [4] It is used to treat peptic ulcer disease, gastroesophageal reflux disease, and Zollinger–Ellison syndrome. [4] It is taken by mouth or by injection into a vein. [4] It begins working within an hour. [4] Common side effects include headache.